Arizona — Corporate Income / Franchise Tax

Arizona imposes a corporate income tax on every corporation's entire Arizona taxable income unless specifically exempt under A.R.S. § 43-1126 or § 43-1201. Every corporation subject to the Arizona Income Tax Act of 1978 must file an Arizona corporate income tax return, even if it has no federal taxable income or a federal return is not required. A limited liability company that makes a valid federal election to be taxed as a corporation must also file an Arizona corporate income tax return. A single-member LLC that is disregarded for federal income tax purposes is included as a branch or division of its owner and is taxed through the owner's return in Arizona.

Minimum tax and rate – material change for tax years beginning after December 31, 2025:

• For taxable years beginning after December 31, 2016, and before January 1, 2026, the corporate income tax is the greater of $50 or 4.9% of the corporation's net income.
• For taxable years beginning on or after January 1, 2026, Arizona law was amended by Laws 2026, Ch. 197 (HB 2902), to establish a $1,000 minimum tax for corporations with 50 or more employees. All other corporations remain subject to the previous $50 minimum tax. The rate remains 4.9% of net income. This is a significant change for larger employers and practitioners should confirm employee headcount when computing the minimum tax owed for TY 2026 and after.

Source: A.R.S. § 43-1111; 2026 Arizona Session Laws, HB 2902; ADOR Corporate Income Tax page

Arizona imposes corporate income tax on each corporation with a "business situs" in Arizona, measured by taxable income that is the result of activity within or derived from sources within Arizona. The state exercises its taxing power to the fullest extent constitutionally permissible, subject to federal limitations including Public Law 86-272.

Public Law 86-272 protects out-of-state corporations whose only in-state activity is soliciting orders for sales of tangible personal property, where the orders are approved and filled from outside Arizona. This federal protection does not apply to sales of services, intangibles, or digital products, nor does it protect corporations that perform post-sale services, maintain inventory, or conduct other business activities in Arizona beyond mere solicitation.

A corporation that exceeds the protection of P.L. 86-272 has nexus if it engages in business activity in Arizona. Arizona has not enacted specific economic nexus thresholds (such as dollar or transaction counts) for corporate income tax purposes, distinguishing it from the state's transaction privilege tax rules.

Source: A.R.S. § 43-102.A.5; ADOR Corporate Income Tax Nexus Program

Arizona corporate income tax returns are due on or before the fifteenth day of the fourth month following the close of the taxable year. For calendar-year corporations, the return is due April 15.

If the corporation obtains a valid federal extension under the Internal Revenue Code, the Arizona filing deadline is automatically extended to match the extended federal due date, without requiring a separate Arizona extension request. However, an extension of time to file does not extend the time to pay the tax. Any unpaid tax owed after the original due date accrues interest during the extension period.

Source: A.R.S. § 43-329

Arizona taxable income for a corporation is defined as Arizona gross income adjusted by the modifications specified in A.R.S. §§ 43-1121 and 43-1122. Arizona gross income starts with federal taxable income as computed under the Internal Revenue Code. Arizona law adopts the provisions of the IRC relating to the measurement of corporate taxable income, with the intent that the amount reported to the IRS each year is the starting point for Arizona, subject only to Arizona-specific modifications.

A.R.S. § 43-1121 requires additions to Arizona gross income for items including interest on non-Arizona state and local bonds, income-based taxes paid to other states, and certain partnership income adjustments. A.R.S. § 43-1122 allows subtractions from Arizona gross income for items including certain controlled-corporation dividends and specific depreciation adjustments. The statutes enumerate the complete lists of required modifications.

Source: A.R.S. § 43-1101(2); A.R.S. § 43-102; A.R.S. § 43-1121; A.R.S. § 43-1122

For tax years beginning after December 31, 2016, Arizona corporations apportion business income by electing one of two formulas: (1) a double-weighted sales factor formula, calculated as (property factor + payroll factor + 2 × sales factor) ÷ 4; or (2) a single sales factor formula using only the sales factor. Taxpayers make this election annually when filing. Corporations engaged in air commerce, where at least 50% of gross income derives from air commerce, must use a special revenue aircraft miles formula instead of the standard formulas.

Source: A.R.S. § 43-1139

Arizona determines the sales factor numerator in its apportionment formula based on the type of receipts: tangible personal property, services, or intangibles. A statutory change (HB 2491, 2026 session) materially revises the sourcing rules for tax years beginning after December 31, 2026.

Sales of tangible personal property

• Remain sourced to Arizona if delivered or shipped to a purchaser within the state. This destination-based rule is unchanged (A.R.S. § 43-1146).

Sales of services and intangibles / market-based sourcing change

• _For tax years beginning before January 1, 2027:_
• Cost of performance sourcing applies by default under A.R.S. § 43-1147(A). Receipts from services, intangibles, and digital goods are in the Arizona numerator if the income-producing activity occurs principally in Arizona, or (if occurring in multiple states) according to where the greater proportion of cost is incurred.
• Market-based sourcing election: "Multistate service providers" (generally, taxpayers with 85%+ sales from services/intangibles to out-of-state customers) may elect market-based sourcing under A.R.S. § 43-1147(B)-(E). Elected receipts are sourced to Arizona where the purchaser receives the benefit. This election is binding for five years and includes special categories (e.g., regionally accredited higher-ed).

• _For tax years beginning on or after January 1, 2027:_
• Mandatory market-based sourcing: Arizona moves to mandatory market-based sourcing for sales of services and most other receipts under amended A.R.S. § 43-1147 (Laws 2026, ch. TBD, HB 2491). Sales receipts are assigned to Arizona if the taxpayer's market for the service or intangible is in Arizona.
• Receipts from intangibles specifically: Under the amendment, gross receipts from intangible property are excluded from both the numerator and denominator of the sales factor unless the receipts are from licensing that is akin to the sale or exchange of the property (unless otherwise provided by the Department via regulation).
• The Department is authorized to issue further guidance regarding the assignment of receipts from intangibles and application to digital property, but such guidance had not been issued as of June 2026.

Practitioner impact:

• For TY 2026 and prior, practitioners must determine if their client qualifies for the market-based election and apply cost-of-performance or the election accordingly.
• For TY 2027 onward, sourcing for services and intangibles is market-based and practitioners must review customer location and benefit—while closely tracking which intangible receipts may be excluded from the factor.

Key distinction from transaction privilege tax Arizona corporate income tax sourcing is governed by A.R.S. §§ 43-1146 and 43-1147. These are distinct from TPT (sales tax) rules and are subject to different sourcing logic.

Recent amendment summary:

• HB 2491 (2026) extends the elective regime through TY 2026, mandates market sourcing for later years, and changes the treatment of intangible receipts. This is a material change. Practitioners should monitor Department publications for regulatory expansion.

Source: A.R.S. § 43-1146 Source: A.R.S. § 43-1147 (as amended by HB 2491, 2026) Source: Arizona Department of Revenue – Corporate Income Tax

Arizona uses a static (fixed-date) approach for Internal Revenue Code (IRC) conformity, updating its conformity date annually by statute after legislative review. The conformity date is pivotal for both the starting point for Arizona taxable income and for tracing Arizona’s selective decoupling from certain federal provisions.

New conformity date for 2026 filings

Effective for taxable years beginning on or after December 31, 2025, Arizona conforms to the IRC as amended and in effect on January 1, 2026. This change was enacted in 2026 by Laws 2026, Chapter 1 (HB 4168), amending A.R.S. § 43-105. The prior conformity date was January 1, 2025 and applied to tax years beginning during 2025. Each legislative session, the conformity bill typically passes in the spring or early summer, but taxpayers must confirm the date applicable for the year at issue, as legislative delays are common.

Statutory effect and application

• For tax years beginning on or after December 31, 2025: Arizona conforms to the IRC as in effect on January 1, 2026, including all amendments with retroactive federal effective dates in 2025.
• For tax years beginning during 2025: Arizona conformed to the IRC as in effect on January 1, 2025.
• Federal law changes made after January 1, 2026 do not apply until expressly adopted by future legislation.

Legislative process and decoupling

Each year, the Arizona Legislature must affirmatively update the IRC conformity date. The Department of Revenue reports recent federal amendments to the Legislature by January 10. If conformity is delayed, gaps may arise between federal enactments and the Arizona starting point; retroactive conformity is typical but not guaranteed.

Arizona continues to decouple from certain federal provisions, most notably bonus depreciation. These permanent differences are implemented as statutory modifications to Arizona gross income under A.R.S. § 43-1121 (additions) and § 43-1122 (subtractions), persisting across conformity updates.

Practitioners should monitor both the general conformity date and Arizona’s permanent additions or subtractions for each filing year.

Source: A.R.S. § 43-105; Laws 2026, Ch. 1 (HB 4168); Arizona Department of Revenue – IRC Conformity

Arizona corporations that are part of a commonly owned or controlled group may be required to file a combined return if they constitute a unitary business, or may elect to file a consolidated return if they are members of an affiliated group that files a federal consolidated return. The choice of filing method—separate, combined, or consolidated—depends on the ownership structure and the operational integration of the group.

Department authority to require combined filing

Under A.R.S. § 43-941, the Arizona Department of Revenue may distribute, apportion, or allocate gross income, deductions, credits, or allowances between or among affiliated taxpayers if it determines that such action is necessary to prevent tax evasion or to clearly reflect income. For the purpose of enforcing this authority, the Department may require the filing of a combined report and such other information as it deems necessary, unless the taxpayer has elected or is required to file a consolidated return pursuant to A.R.S. § 43-947.

This statute applies to "any case of two or more persons, organizations, trades or businesses, whether or not organized in the United States and whether or not affiliated, owned or controlled directly or indirectly by the same interests." The Department's power to require combined filing is discretionary and is exercised when necessary to prevent evasion or to clearly reflect income.

Three threshold requirements for unitary business determination

Arizona Administrative Code R15-2D-401 establishes three necessary threshold characteristics that must all be present before entities can be treated as a unitary business. As summarized in AZDOR Corporate Tax Ruling CTR 95-3 and CTR 94-1, these threshold requirements are:

1. Common ownership or control: The entities comprising the unitary business must be owned or controlled, directly or indirectly, by the same interests that collectively own more than 50 percent of the voting stock.

1. Common management: The entities or components must share common management.

1. Reconciled accounting systems: The entities or components must have reconciled accounting systems.

The presence of these three characteristics is not sufficient by itself. Arizona additionally requires evidence of substantial operational integration at the basic operational level before a business is treated as unitary. An entity, group of entities, or components of an entity is not a unitary business for apportionment purposes unless there is actual substantial interdependence and integration of the basic operations of the business carried on in more than one taxing jurisdiction. The potential to operate an entity or a component as part of the unitary business is not dispositive.

Centralized top-level management, financing, accounting, insurance and benefit programs, or overhead functions by a home office are not sufficient for a business to be unitary without further analysis of the basic operations of the components.

Operational integration tests

For manufacturing, producing, or mercantile businesses, the regulation requires a substantial transfer of material, products, goods, technological data and processes, or machinery and equipment between the branches, divisions, subsidiaries, or affiliates. A transfer of 20 percent or more of the total goods annually is presumptive evidence of a unitary business. A smaller percentage of goods transferred may be indicative of a unitary business if other characteristics indicating substantial operational integration are present.

The determination of whether the operations of a taxpayer constitute a unitary business is based on economic substance and not form. A unitary business may consist of part of a corporation, one corporation, or many corporations. If the unitary business consists of more than one corporation, the corporations comprising the unitary business must file a combined return apportioning the business income of the corporations using a single apportionment formula.

Consolidated return election as an alternative

Under A.R.S. § 43-947, the common parent of an affiliated group of corporations that files a federal consolidated return may elect to file an Arizona consolidated return. This election provides an alternative filing method for affiliated groups. Federal law defines an affiliated group under I.R.C. § 1504 as one or more chains of includible corporations connected through stock ownership (generally 80 percent or more of the voting power and value of the stock) with a common parent corporation. The Arizona consolidated return election is distinct from the combined-return requirement and is available regardless of whether the group constitutes a unitary business under the operational-integration tests in A.A.C. R15-2D-401.

Filing method summary

A corporation files on a combined basis when it is part of a unitary group of companies whose parts and component functions are integrated and interdependent at the basic operational level, with more than 50 percent common ownership or control. A corporation files on a consolidated basis when the common parent of an affiliated group that files a federal consolidated return elects to file an Arizona consolidated return under A.R.S. § 43-947. A corporation that is not part of a unitary business and does not elect consolidated filing files a separate-company return.

Source: A.R.S. § 43-941; AZDOR Corporate Tax Ruling CTR 95-3 (discussing A.A.C. R15-2D-401); AZDOR Corporate Tax Ruling CTR 94-1 (discussing A.A.C. R15-2D-401)

Arizona's corporate income tax framework divides a multistate taxpayer's income into two mutually exclusive categories: business income, which is apportioned among states using a formula, and nonbusiness income, which is allocated to specific states based on the location or domicile of the income-producing asset. This classification determines whether income is subject to Arizona's apportionment formula or is instead directly allocated to Arizona (or away from Arizona).

Statutory definitions

Arizona Revised Statutes § 43-1131, part of the state's adoption of the Uniform Division of Income for Tax Purposes Act (UDITPA), provides the controlling definitions. Under A.R.S. § 43-1131(1), "business income" means income arising from transactions and activity in the regular course of the taxpayer's trade or business and includes income from tangible and intangible property if the acquisition, management and disposition of the property constitute integral parts of the taxpayer's regular trade or business operations.

This definition establishes two alternative tests for qualifying income as business income:

1. Transactional test: Income arises from transactions and activity in the regular course of the taxpayer's trade or business. This test applies broadly to operating income and does not require the three-element functional analysis.

1. Functional test: Income from tangible or intangible property qualifies as business income if the acquisition, management, and disposition of the property constitute integral parts of the taxpayer's regular trade or business operations. For property income, all three activities—acquisition, management, and disposition—must be integral to the business.

Income that satisfies either test is business income. However, for property-related income (such as capital gains, interest, dividends, rents, or royalties), the functional test provides an additional path to business income classification when the property itself plays an integral operational role, even if the specific transaction generating the income is not a regular business activity. The conjunction "and" in the functional test means that passive investment property—where acquisition, management, or disposition is not integral to business operations—produces nonbusiness income even if the taxpayer is otherwise engaged in active business.

Nonbusiness income is defined residually under A.R.S. § 43-1131(4) as all income other than business income. This negative definition means that income failing both the transactional test and the functional test is classified as nonbusiness income.

Treatment of business vs. nonbusiness income

The classification has direct consequences for how income is taxed by Arizona:

• Business income is apportioned to Arizona using the taxpayer's apportionment formula under A.R.S. § 43-1139. For tax years beginning after December 31, 2016, taxpayers elect annually between a double-weighted sales factor formula or a single sales factor formula. Only the portion of business income apportioned to Arizona is subject to Arizona corporate income tax.

• Nonbusiness income is allocated under the specific allocation rules in A.R.S. §§ 43-1134 through 43-1138. The allocation method depends on the type of income. For example, under A.R.S. § 43-1136, capital gains and losses from sales of intangible personal property (such as stock or partnership interests) are allocated to Arizona if the taxpayer's commercial domicile—defined as the principal place from which the trade or business is directed or managed—is in Arizona. Rents and royalties from real property are allocated to Arizona if the property is located in Arizona. Interest and dividends constituting nonbusiness income are allocated to Arizona if the taxpayer's commercial domicile is in Arizona.

Allocation is an all-or-nothing determination: if a gain from the sale of stock is nonbusiness income and the taxpayer's commercial domicile is in California, none of that gain is taxable by Arizona, even if the taxpayer has substantial Arizona operations. Conversely, if the commercial domicile is in Arizona, 100 percent of the nonbusiness capital gain is allocated to Arizona.

Application to common fact patterns

The Arizona Department of Revenue has issued corporate tax rulings addressing specific applications of the business vs. nonbusiness distinction:

• Gain on sale of partnership interest (CTR 94-3): If a corporation's distributive share of partnership income was business income and the partnership interest produced business income, the capital gain realized from selling the partnership interest is business income subject to apportionment. However, if the partnership interest produced nonbusiness income or the corporation's distributive share of the partnership's property was removed from the corporation's property factor for a substantial period (five years or more) before the sale, the capital gain is nonbusiness income allocated to the state of commercial domicile.

• Gain on sale of stock (CTR 00-1): Where gain or loss on the sale of stock arises from a subsidiary that is part of the taxpayer's unitary business, courts have generally held the gain or loss to be business income. For stock holdings outside a unitary relationship, the analysis turns on whether the investment served an operational purpose (making it business income) or a passive investment purpose (making it nonbusiness income).

Relationship to unitary business and apportionment

The business vs. nonbusiness income distinction is separate from, but interacts with, the unitary business determination. A corporation engaged in a multistate unitary business apportions its business income using a single apportionment formula that reflects the combined activities of the unitary group. Any nonbusiness income, however, is carved out and allocated separately before apportionment occurs. Even within a combined or consolidated return filing group, nonbusiness income is allocated according to the commercial domicile or situs rules rather than being included in the apportioned base.

Source: A.R.S. § 43-1131; A.R.S. § 43-1134; A.R.S. § 43-1136; A.R.S. § 43-1139; AZDOR Corporate Tax Ruling CTR 94-3; AZDOR Corporate Tax Ruling CTR 00-1

Arizona imposes civil penalties and interest on corporations that fail to timely file returns or pay tax. The penalties are calculated as percentages of the tax due and are imposed monthly. Interest accrues separately and compounds annually. The Department of Revenue may abate penalties when a taxpayer shows reasonable cause and absence of willful neglect.

Late filing penalty

Under A.R.S. § 42-1125(A), a corporation that fails to file a return on or before the due date or extended due date is subject to a penalty of 4.5% of the tax required to be shown on the return for each month or fraction of a month between the due date and the date the return is filed. The total late filing penalty cannot exceed 25% of the tax found to be remaining due. The penalty is reduced by any tax paid on or before the beginning of each month and by any credits claimed on the return.

2026 change – zero-tax returns

For tax years beginning on or after January 1, 2026, no late filing penalty applies to a corporate return that shows zero tax due. This exemption applies regardless of whether the taxpayer would otherwise be late. Other penalties relating to late payment or for nonzero returns remain in effect. This change was enacted via Laws 2026, Ch. 15 (HB 2016), amending A.R.S. § 42-1125.

Valid extension and payment threshold

If the corporation files under a valid extension and the return is filed by the extended due date, no late filing penalty is imposed, even if tax remains unpaid, provided the corporation paid at least 90% of the tax by the original due date. Arizona automatically extends the corporate income tax filing deadline to match the federal extension under I.R.C. provisions, without requiring a separate Arizona extension request, as long as the taxpayer has a valid federal extension.

Late payment penalty

A.R.S. § 42-1125(D) imposes a penalty when a corporation fails to pay the tax shown on the return within the prescribed time. The late payment penalty is 0.5% of the tax shown for each month or fraction of a month the failure continues, not to exceed a total of 10%. If the corporation is also subject to the late filing penalty for the same tax period, the combined late filing and late payment penalties cannot exceed 25% of the tax.

The Department will not impose the late payment penalty if it determines the failure to pay was due to reasonable cause and not willful neglect, and a payment agreement under A.R.S. § 42-2057 is appropriate—unless the taxpayer subsequently fails to comply with the payment agreement.

Extension underpayment penalty

When a corporation files under an extension but does not pay at least 90% of the tax liability by the original due date, an extension underpayment penalty applies to the shortfall. Arizona Department of Revenue Corporate Tax Ruling CTR 09-1 explains that this penalty applies in addition to late payment penalties when a corporation files timely under extension but fails to meet the 90% payment threshold. The extension underpayment penalty is calculated separately from the late payment penalty and applies from the original due date to the date the tax is actually paid.

Interest on unpaid tax

Arizona assesses interest on unpaid tax under A.R.S. § 42-1123. The interest rate is the federal short-term rate, determined under I.R.C. § 6621(b), plus three percentage points. Interest is compounded annually. The Department adds any outstanding interest as of January 1 of each year to the principal amount of tax, and that added interest becomes part of the principal for purposes of calculating subsequent interest.

Interest accrues from the original due date of the return (without regard to extensions) until the date the tax is paid. If a corporation obtains a filing extension, interest accrues on any unpaid balance from the original due date through the date of payment, even when the extended return is filed timely and no late filing penalty is imposed. Interest on a deficiency assessed by the Department accrues from the date prescribed for payment of the tax to the date the deficiency is assessed.

Penalty abatement for reasonable cause

A.R.S. § 42-2062 provides that the Department shall abate penalties imposed under A.R.S. §§ 42-1125, 42-1107, 43-581, or 43-582 upon written application by the taxpayer if the Department determines the conduct (or lack of conduct) causing the penalty was due to reasonable cause and not willful neglect. A taxpayer may request abatement after a penalty is assessed, or may request a waiver before an assessment is issued if the taxpayer is under audit.

For purposes of penalties imposed under A.R.S. § 42-1125, "reasonable cause" means the taxpayer exercised ordinary business care and prudence but was nevertheless unable to file the return, furnish the requested information, or provide for payment of the tax liability within the prescribed time. Arizona Department of Revenue General Tax Ruling GTR 04-2 provides examples of circumstances constituting reasonable cause, including unavoidable absence of the taxpayer, mathematical errors on a timely filed return, and delay caused by circumstances beyond the taxpayer's control. Reasonable cause is determined by the facts and circumstances of each case.

Penalty abatement is available for the late filing penalty (A.R.S. § 42-1125(A)), late payment penalty (A.R.S. § 42-1125(D)), extension underpayment penalty (A.R.S. § 42-1107), and underpayment of estimated tax penalty (A.R.S. § 42-1125(P)), among other penalties. Interest, however, generally may not be abated unless the interest resulted from an unreasonable error or delay by a Department employee under A.R.S. § 42-2065, or unless abatement is authorized under A.R.S. § 42-2052 for erroneous advice or misleading statements by the Department.

Additional penalties

Arizona imposes additional penalties for specific violations. A.R.S. § 42-1125(B) imposes a flat 25% penalty (in addition to the late filing penalty) when a taxpayer fails or refuses to file a return after notice and demand by the Department. A.R.S. § 42-1125(F) imposes a 10% penalty on deficiencies due to negligence without intent to defraud. A.R.S. § 42-1125(G) imposes a 50% penalty on any portion of a deficiency due to fraud with intent to evade tax.

Source: A.R.S. § 42-1125; A.R.S. § 42-1123; A.R.S. § 42-2062; AZDOR Corporate Tax Ruling CTR 09-1; AZDOR General Tax Ruling GTR 04-2

Arizona applies the Finnigan rule for the inclusion of sales in the numerator of the sales factor for combined and consolidated returns—a position set by regulation and supported by statutory language.

Finnigan vs. Joyce—brief background:

• Under the Joyce rule, only the sales of group members with nexus to the state are included in the numerator when calculating the state's share of business income. Under Finnigan, all members’ sales to in-state customers count, even if the selling entity lacks nexus (i.e., the group files as one taxpayer).

Arizona's rule as codified: Arizona Administrative Code R15-2D-404(B) expressly requires that, for purposes of computing each apportionment factor (property, payroll, and sales), "the amounts used in the computation of the numerator and denominator of the apportionment formula shall be the amounts determined on a combined basis for all corporations included in the combined report." The rule requires that these calculations occur before any elimination of intercompany transactions, i.e., all group members' sales into Arizona are aggregated before factor computation.

Statutory authority supports this approach. A.R.S. § 43-1145(B) states that "if a taxpayer is a member of an affiliated group," the sales of each member within Arizona are included in the numerator unless the member is a foreign (non-U.S.) corporation not subject to Arizona income tax apart from certain inclusions.

Practical effects:

• The Finnigan approach increases the numerator for multistate, multi-entity filers by including Arizona sales from members without nexus, reducing “nowhere income” and potentially increasing Arizona’s apportioned share.
• Combined/consolidated filers must aggregate all Arizona-destination sales of included group members in the numerator, regardless of the member's nexus status. This can result in higher Arizona corporate income tax liability for the group compared to a strict Joyce regime.

Summary: Arizona codifies the Finnigan method in both regulation (A.A.C. R15-2D-404) and in the structure of A.R.S. § 43-1145.

Source: A.A.C. R15-2D-404; A.R.S. § 43-1145

Net Operating Loss Carryforwards and Carrybacks

Arizona allows corporations to carry forward net operating losses (NOLs) generated on the Arizona return, but does not permit NOL carrybacks for any taxable years.

• For NOLs generated in taxable years beginning before January 1, 2012, Arizona allows a 5-year carryforward period from the year of the loss. Taxpayers must use the loss within this period, else it expires.
• For NOLs incurred in taxable years beginning on or after January 1, 2012, the carryforward period increases to 20 years from the year of the loss, matching the current federal period for carryforwards but not federal rules for carrybacks.

Losses must be computed on an "Arizona basis"—that is, the NOL available for use in Arizona is limited to the loss calculated after all required Arizona additions and subtractions, regardless of the federal NOL claimed.

Arizona requires that federal NOL deductions and carryforwards be added back in full for Arizona purposes (i.e., they cannot reduce Arizona taxable income except to the extent specifically subtracted as an available Arizona NOL under state law). Taxpayers may only subtract an NOL that arises from and is available under Arizona law.

Computation and Limitation Rules

• The NOL deduction for a taxable year cannot exceed Arizona taxable income for that year, determined without regard to the NOL deduction. If a corporation files as part of a combined group, the deduction may be taken only by the member with the loss carryforward.
• Arizona does not allow NOL carrybacks for corporations in any taxable year.
• A statement must be attached to the return for each year in which an Arizona NOL deduction is claimed, showing the computation and taxable years remaining for any unused NOL.

Source: A.R.S. § 43-1123 Source: A.A.C. R15-2D-302 Source: Arizona Department of Revenue, Corporate Income Tax Legal Research: Conformity to IRC

Status of corporate income tax credits for new job creation or business expansion as of June 29, 2026

As of June 29, 2026, Arizona does not have any operative corporate income tax credit for new job creation, new employment, or general business expansion.

• No currently operative job creation credits: A review of Arizona Revised Statutes Title 43 (income tax code), session laws through the end of the 2025 and 2026 legislative sessions, Department of Revenue corporate forms and credit schedules (including Form 120 and Arizona Credit Form 308), and the Department’s published credit reference page confirms there is no active statute, regulation, or Department program allowing a credit against the Arizona corporate income tax for hiring or new employment in tax year 2026.

• Former Quality Jobs Tax Credit has expired: Arizona previously offered a Quality Jobs Tax Credit under A.R.S. § 41-1525, but the enabling provisions for new certifications sunset December 31, 2018, and the final carryforward period concluded after tax year 2023. The section remains in Title 41 for administration of credits certified before 2019 but is closed to new applicants. No legislative reenactment or replacement for this or any other general employment credit has been enacted or made available through June 2026. (See A.R.S. § 41-1525; 2025 & 2026 Arizona Session Laws)

• Confirmed with Department sources and forms: The Arizona Department of Revenue's consolidated list of corporate income tax credits (as of June 2026), program application portals, and current-year Form 120 and Form 308 instructions do not list any general jobs credit for corporate income taxpayers. The Department's credit portal and official bulletins have not announced a new or pending employment credit. Practitioners and preparers should confirm annually but, as of the 2025 and 2026 filing years, there are no job creation, workforce expansion, or general employment credits available on filed returns. (See ADOR Credit Portal and current corporate forms)

• Other available credits remain limited to research or special industries: The principal business-related credits available continue to be the research and development credit for increased qualified Arizona research activities under A.R.S. § 43-1168 (with sunset provisions after 2030) and several narrowly tailored credits for renewable energy, military reuse, film production, and others. None of these are structured as general employment or job creation credits.

• Summary statement: As of this update, there is no Arizona corporate income tax credit for new job creation, new employment, or general business expansion for tax year 2026. Practitioners should review statutory changes and Department bulletins each year, but primary authority and Department sources confirm the absence for the current period described.

Source: A.R.S. Title 43 Source: A.R.S. § 41-1525 Source: A.R.S. § 43-1168 Source: Arizona Department of Revenue – Corporate Income Tax Highlights

Arizona does not currently (as of 2026) apply any numeric “factor presence” or economic nexus thresholds—such as a specific dollar amount of sales, property, payroll, or number of transactions—for corporate income tax purposes. Both Title 43 of the Arizona Revised Statutes and Department of Revenue guidance limit nexus for corporate income tax to constitutional standards, such as physical presence or activity that creates a “business situs” in the state.

No factor presence or economic thresholds Neither Arizona statutes nor Department regulations or bulletins establish numeric criteria (e.g., $500,000 in sales or 200 transactions) comparable to the multi-factor economic presence thresholds adopted in states like California, Colorado, Ohio, or New York. There is also no Arizona-specific “factor presence” test modeled after Multistate Tax Commission (MTC) recommendations. Nexus for corporate income tax is triggered by business activities that exceed the protection offered by Public Law 86-272, but there is no bright-line rule based on sales, property, or payroll in the state.

Department nexus stance post-Wayfair The Arizona Department of Revenue’s published corporate income tax “nexus program” and official guidance (including Publication 623) reiterate that the state’s taxing power must be exercised to the fullest extent permitted by the U.S. Constitution, subject to federal law restrictions (such as P.L. 86-272 for sales of tangible personal property by out-of-state sellers). Arizona has implemented an explicit sales threshold for economic nexus only for Transaction Privilege Tax (sales tax), not for income tax. The Department has not published any post-Wayfair guidance interpreting economic presence as sufficient for income tax nexus—nor has it issued regulatory or policy statements adopting dollar/transaction-based factor presence as a standard for asserting jurisdiction over out-of-state corporations.

Statutory and regulatory silence A search of Arizona Revised Statutes Title 43 and available Department regulations reveals no provision implementing economic or factor presence nexus for corporate income tax. All major DOR nexus materials address only constitutional nexus, physical presence, or activities in the state. Arizona’s approach contrasts with states that now assert nexus over corporations with no in-state activity, based solely on economic thresholds.

Key references:

• Arizona Revised Statutes Title 43 (income tax code) (no economic/factor thresholds)
• Arizona DOR Corporate Income Tax Nexus Program: https://azdor.gov/taxpayer-education/nexus-program/nexus-program-corporate-income-tax
• Arizona DOR Publication 623 (Corporate Income Tax and the Nexus Standards, Jan. 2019): https://azdor.gov/sites/default/files/2023-03/PUBLICATION_623.pdf

Source: A.R.S. Title 43 Source: AZDOR Corporate Income Tax Nexus Program Source: AZDOR Publication 623

Arizona does not permit free sharing of net operating losses (NOLs) among members of a combined or consolidated group for corporate income tax purposes. Instead, NOLs must be tracked and applied on a member-by-member basis, using Arizona’s attribute tracking and apportionment factor rules.

Combined returns and NOLs: For taxpayers required or permitted to file a combined return (i.e., unitary business groups), Arizona Administrative Code R15-2D-302 states that an Arizona NOL generated by one entity may only offset that member’s portion of combined income in future years. The regulation mandates that the NOL carryforward for each member be apportioned using the ratio of the member's Arizona apportionment factors (property, payroll, and sales) to the total factors for the group for the loss year. That ratio “remains constant for purposes of applying the carryover to future years,” meaning the loss can only offset the income attributable to that member (as measured by its proportionate share of the group’s apportionment factors), rather than being freely applied to the combined income of the entire group. The regulation provides detailed formulas for both the computation of losses and their allocation, mirroring but not matching the federal Separate Return Limitation Year (SRLY) concept by restricting how NOLs move within the group.

Consolidated returns: When an Arizona consolidated return is filed under A.R.S. § 43-947, similar restrictions apply. The NOL deduction must be allocated and apportioned in the same way: a consolidated loss attributable to any member may only be used to offset consolidated income to the extent of that member’s allocable share, computed by the same proprietary apportionment ratio. NOLs generated by one affiliate before entering the group cannot be applied against the income of a different member after they are members of the same group—there is no “attribute sharing” across unrelated historical periods or entities.

No carry-forward or sharing of pre-affiliation NOLs: Arizona explicitly bars the transfer of NOLs from one entity to another across mergers, consolidations, or reorganizations, paralleling anti-duplication rules at the federal level. Only the portion of the loss generated by the member while it was in the group, and corresponding to its own share, can offset future Arizona taxable income.

Summary:

• Arizona requires separate tracking of NOLs for each group member.
• NOLs can offset only the portion of combined income attributable to the loss-generating member, using a set apportionment ratio.
• There is no general “free sharing” of NOLs across a combined or consolidated group.
• Arizona’s approach is comparable to the federal SRLY principle—losses follow the member, not the group.

Source: A.A.C. R15-2D-302

Not yet human confirmed.

Arizona Market-Based Sourcing for Services: Pre-2027 and Post-2026 Framework

Elective market-based sourcing through tax year 2026 For tax years beginning before January 1, 2027, Arizona allows certain multistate service providers to elect market-based sourcing for sales of services under A.R.S. § 43-1147(E). Under this elective regime, a sale of services is sourced to Arizona if the "purchaser receives the benefit of the service in this state." If it is not readily determinable where the purchaser received the benefit, the statute provides fallback rules:

• For individual (consumer) purchasers: benefit is sourced to the customer’s state of residence;
• For business purchasers: location is determined by the ordering office in the regular course of business;
• If neither is determinable, by the office to which the service was billed.

As of mid-2026, the Arizona Department of Revenue had not published detailed administrative guidance or case audit examples expanding on these standards. Thus, taxpayers must apply the statutory rule based on the facts and circumstances of each transaction, with careful documentation and application of the statutory fallbacks.

Material statutory change effective for tax years beginning on or after January 1, 2027 Arizona’s governing statute for sourcing sales of services and intangibles—A.R.S. § 43-1147—was amended by HB 2491 (2026 session) to require mandatory market-based sourcing for these receipts for tax years beginning on or after January 1, 2027. Key elements of the post-2026 regime include:

• Mandatory market-based sourcing: All taxpayers (not just electing multistate service providers) must source sales of services and most receipts according to the Arizona market for the service, as specified in amended statute;
• Gross receipts from certain intangible property are excluded from the numerator and denominator of the sales factor, except to the extent that such receipts arise from a license or sale akin to the disposition of property (subject to Department regulation);
• The Department of Revenue is authorized to issue additional interpretive regulations, but as of this update no new regulations or substantial published guidance have been issued to clarify the meaning of "benefit of the service" or assignment of intangibles under the amended law.

Summary guidance for practitioners

• For tax years before 2027: Sourcing is elective, based on where the purchaser receives the benefit, with statute-based fallbacks for indeterminable cases;
• For tax years 2027 and onward: Sourcing for services and most intangibles becomes mandatory market-based, with new exclusions for intangibles—practitioners must closely review updated statutory language and monitor for DOR publications as implementation proceeds.

Source: A.R.S. § 43-1147 Source: HB 2491 (2026) – Arizona Legislature

Not yet human confirmed. Statutory changes effective for post-2026 years require careful tracking for new guidance or regulations.

Arizona law requires corporations to file their corporate income tax returns electronically for taxable years beginning from and after December 31, 2019 (i.e., tax year 2020 returns filed in 2021 and after). This mandate is codified at A.R.S. § 43-323(F) and applies to original and, when supported, amended corporate returns. The Arizona Department of Revenue (ADOR) phased in electronic filing with voluntary participation for 2019, but made e-file mandatory for all returns with a tax period beginning January 1, 2020 or later.

A.R.S. § 43-323(F) provides: "For taxable years beginning from and after December 31, 2019, a return required under this section shall be filed using electronic filing as prescribed by the department. The director may waive this requirement on a showing by the taxpayer, according to criteria established by the department, that the requirement creates a significant hardship."

ADOR allows taxpayers who cannot file electronically to request an annual waiver using Form 292 (Electronic Filing and Payment Waiver Application). The waiver criteria are set by ADOR and may include lack of access to a computer, internet, or other significant hardship. Waivers are available only for the specific year and must be renewed annually. A waiver is not required if the IRS or ADOR instructs a taxpayer to file by paper for a particular return.

As of tax year 2025, ADOR supports e-filing of amended corporate income tax returns (Form 120X), but the e-file mandate for amended returns has been temporarily waived for that year according to the Department's published corporate income tax highlights.

Neither statute nor ADOR's main guidance articulates a separate penalty for failing to e-file when required, but ADOR may reject paper returns submitted without an approved waiver. There are no statutory or administrative incentives for e-filing, such as fee reductions.

Source: A.R.S. § 43-323(F) Source: Arizona Department of Revenue – E-File for Corporate Source: Arizona Department of Revenue – Corporate Income Tax Highlights Source: Arizona Department of Revenue – Electronic Filing and Payment Waiver Application (Form 292)

Not yet human confirmed. Statutory language and current ADOR guidance should be checked at each filing season for updates to waivers or compliance practices.