Arizona Business Taxes: Agencies, Accounts & Filing Guide

Arizona Business Tax Agencies and Accounts at a Glance

Running a business in Arizona means setting up accounts across state, federal, and local offices. Each agency handles a separate piece of your compliance, from forming your legal entity to collecting vendor taxes and reporting payroll.

When you start a business in Arizona, you can use the Arizona Business One Stop portal to plan and submit initial registrations in one digital location. However, once your accounts are open, ongoing Transaction Privilege Tax filings, payments, and annual license renewals are only available on AZTaxes.gov. Business One Stop users can link their credentials to their AZTaxes.gov account, which redirects you to the eAZ login page when you sign in.

• azdor.gov: Transaction Privilege Tax
• azdor.gov: Home

Checklist: Registering Your Arizona Tax Accounts in Order

Arizona agencies check numbers from earlier steps before they approve later applications. For example, the Department of Economic Security cannot process your state joint tax application if you leave the Federal Employer Identification Number (EIN) section blank.

Follow these seven steps in order so no application gets rejected for a missing prerequisite.

• Step 1: Check entity name availability on ArizonaBusinessCenter.azcc.gov under File, then Name, then Check Name Availability. If you are not ready to form the entity yet, reserve the name through the ACC (good for 120 days) or register a trade name with the Arizona Secretary of State at azsos.gov (effective for 5 years). If you own a registered trade name, you do not need a separate ACC name reservation.
• Step 2: Submit your formation documents to the ACC Corporations Division at ArizonaBusinessCenter.azcc.gov. File Articles of Organization for a limited liability company (LLC) or Articles of Incorporation for a corporation. Wait for the ACC staff to examine your paperwork and send your approval letter.
• Step 3: Apply for your Federal Employer Identification Number (EIN) from the IRS at irs.gov.
• Step 4: Complete the Arizona Joint Tax Application (Form JT-1/UC-001) to register with both the Arizona Department of Revenue (ADOR) and the Department of Economic Security (DES) at the same time. Record your Federal EIN on the form and submit it to the License and Registration Section of ADOR, which sends a copy to DES. If you already hold an Arizona tax withholding account and only need an unemployment account, email the downloaded Joint Tax Application directly to the DES Employer Registration Unit.
• Step 5: Pay for your Transaction Privilege Tax (TPT) license on AZTaxes.gov. Each license costs $12 per business location.
• Step 6: Register with the city where your business is located, or with the county if you operate in an unincorporated area, for local TPT and business or occupational licenses. The ACC does not issue business or occupational licenses.
• Step 7: Open your business bank or credit union account. Note that if you open a bank account before filing with the ACC, the ACC will not accept temporary checks that lack a pre-printed name and address.

• azcc.gov: 10 Steps to Starting a Business in Arizona
• des.az.gov: Applying for an Unemployment Insurance Tax Account Number

Arizona Transaction Privilege Tax (TPT) and Use Tax Rules

The Arizona Transaction Privilege Tax (TPT) is legally a tax on the vendor for the privilege of doing business in the state. Vendors can pass the tax on to customers, and ADOR collects TPT on behalf of Arizona counties and cities, but the business remains responsible for licensing and remittance.

Businesses operating across multiple locations or business lines can choose to license and report each location separately or apply for a consolidated license to report aggregate sales. Either way, the state license fee is $12 per location. Every TPT account must be renewed annually by January 1 on AZTaxes.gov to avoid late penalties.

When a buyer purchases tangible personal property for use, storage, or consumption in Arizona and the retailer does not collect tax, Arizona use tax applies. Individuals and businesses are subject to use tax in three situations: when an out-of-state retailer or utility business makes sales of tangible personal property to Arizona purchasers without collecting tax, when Arizona residents buy goods with a resale certificate and then use, store, or consume them in Arizona contrary to that certificate, or when Arizona residents buy goods taxed in another state at a rate lower than Arizona's use tax rate.

Keep these recent Arizona TPT statutory rules in mind when setting up your accounting:

• Under-19 business owner exemption: Effective September 14, 2024, under Arizona Revised Statutes (A.R.S.) Section 42-5045, individuals under age 19 may operate a business without a state TPT license if the business generates no more than $10,000 in gross income in a calendar year. Those under 19 who operate a business occasionally are also exempt from city and county business licenses or permits. If an under-19 owner already holds a TPT license with an adult listed on it and makes $10,000 or less per year, they can cancel the license after filing a final return.
• Long-term residential rental repeal: Starting January 1, 2025, under A.R.S. Section 42-6004(H), residential rental property owners (business code 045) no longer collect, file, or remit city TPT to ADOR on long-term lodging stays of 30 consecutive days or more. Owners must still register residential rental properties with the county assessor and remain responsible for any unpaid TPT liabilities from periods before January 1, 2025. Hotels, motels, and transient lodging businesses booking stays under 30 days must continue to collect and remit TPT.
• Maricopa County Stadium District codes: Under House Bill 2704 (signed June 27, 2025), beginning with October 2025 returns due in November, businesses located within the Maricopa County Stadium District boundaries near Chase Field must report TPT using County Region Code MCZ and City Region Code PZ.
• Arizona penny-rounding law: House Bill 2938 (A.R.S. Section 44-7952) requires Swedish rounding for cash transactions at the point of sale when one-cent coins are unavailable or not used by the seller.

• azdor.gov: Transaction Privilege Tax
• azcc.gov: 10 Steps to Starting a Business in Arizona

How Municipal TPT Rate Changes and Tiered Rates Work

TPT rates depend on your business activity classification, county, and city. ADOR updates its TPT and Other Tax Rate Tables monthly in PDF and CSV formats, and provides an online Arizona Transaction Privilege and Use Tax Rate Look Up Tool where you can search by physical address, zip code, or map locator to find your exact state, county, and city business codes.

When an Arizona city or town passes a tax rate change, an agreement between ADOR and the municipalities provides a 60-day period before implementation so businesses and software providers can update their point-of-sale systems. For businesses that collect a newly increased municipal tax rate from customers prior to its official effective date, ADOR rules state the tax should be submitted to ADOR as excess city tax on the AZTaxes.gov reporting form.

Certain Arizona jurisdictions also use a tiered rate structure for single-item retail purchases over a dollar threshold set by that jurisdiction. A single item means one individual item on an itemized invoice, excluding taxes, add-ons, extended warranties, or sales price adjustments. However, if a retailer bills related costs as one lump sum on an invoice without itemizing, the entire lump sum is treated as a single item for the tiered calculation.

Cities apply tiered retail rates in one of two ways:

• Single-item over jurisdictions: Once an item exceeds the city threshold, the entire sale price is reported under the single-item over code and rate, and any deductions apply to the full sale amount.
• Portion over jurisdictions: Filers apply the regular retail code and rate to the price up to the city threshold, and apply the portion over code and rate only to the dollar difference above that threshold. Any deduction amounts must be prorated between the two codes.

• azdor.gov: Tax Rate Table
• azcc.gov: 10 Steps to Starting a Business in Arizona

Worked Example: Tiered TPT Invoice

Under Arizona Department of Revenue rules, how you format an invoice for a high-ticket retail sale with an extended warranty determines how tiered municipal TPT applies. Suppose an Arizona retailer sells a piece of equipment that exceeds their city's single-item dollar threshold and includes an extended warranty on the same purchase.

If the retailer bills the equipment and the extended warranty as one combined lump sum without breaking down the related costs, ADOR rules treat the entire lump-sum invoice total as a single item subject to the tiered rate calculation. If the retailer instead issues an itemized invoice breaking out the equipment price and the extended warranty on separate lines, the extended warranty and taxes are excluded from the single-item calculation.

In a portion over city, the retailer reports the itemized equipment price up to the city's dollar threshold under the regular retail TPT code and rate, and reports only the dollar difference between the threshold and the total equipment price under the portion over TPT code and rate, prorating any applicable retail deductions between the two codes on AZTaxes.gov.

• azdor.gov: Tax Rate Table
• des.az.gov: Applying for an Unemployment Insurance Tax Account Number

Arizona Unemployment Insurance (UI) Tax for Employers

Arizona's Unemployment Insurance (UI) program is run by the Arizona Department of Economic Security (DES) in partnership with the U.S. Department of Labor. Employers with employees are subject to two separate unemployment taxes: the State Unemployment Tax Act (SUTA) collected by the DES UI Tax Section to fund unemployment benefits, and the Federal Unemployment Tax Act (FUTA) collected by the IRS to fund program administration. Complying with state SUTA rules allows eligible employers to claim a federal tax credit against their FUTA tax.

After DES reviews your Arizona Joint Tax Application, if your business is found liable, DES mails you a Determination of Unemployment Insurance Liability (Form UC-016 or UC-015A). This notice gives you four pieces of information you need for payroll setup: the legal reason for your liability, your UI coverage start date, your assigned tax rate, and your 8-digit Arizona UI employer account number.

Under Senate Bill 1828, Arizona employers are required by law to pay state UI taxes on the first $8,000 in gross wages paid to each employee in a calendar year. Employers file quarterly Unemployment Tax and Wage Reports and submit payments online through the DES Tax and Wage System (TWS). Employers can also make quarterly tax payments by phone at 602-771-6604 using a bank account, credit card, or debit card with their Federal EIN and 8-digit Arizona UI account number ready.

DES mails annual Determination of Unemployment Tax Rate notices to employers on December 31 each year, and posts them electronically inside the Tax and Wage System in mid-January. Starting January 1, 2027, Arizona law introduces updated UI reporting requirements for experience-rated employers, including the Unemployment Insurance Operating Fund (UIOF) and Employer Contribution Reductions.

• des.az.gov: Applying for an Unemployment Insurance Tax Account Number
• des.az.gov: Unemployment

Arizona State Income Taxes and Business Tax Credits

When you form a business with the Arizona Corporation Commission, you register simply as a limited liability company, a corporation, or a nonprofit corporation. Designations like S corporation, C corporation, and 501(c)(3) are federal tax designations handled with the IRS.

Under Arizona tax law, individual residents and small business pass-through owners are taxed starting from the same income reported for federal income tax purposes, subject to specific Arizona statutory modifications, deductions, and exemptions. You can make state individual and small business income tax payments online at AZTaxes.gov under the Make an Individual/Small Business Income Payment link, as well as e-file corporate, individual, and W-2 or 1099 returns.

Arizona offers both refundable and non-refundable income tax credits that directly reduce state tax liability. While a non-refundable credit cannot exceed a taxpayer's tax liability in a single year, the majority of Arizona non-refundable tax credits allow unused credit amounts to be carried forward to future tax years.

Several Arizona business tax credits require pre-certification from ADOR or the Arizona Commerce Authority (ACA) before filing a return to confirm eligibility and manage statewide aggregate caps:

• Qualified Small Business Capital Investment Credit: Administered by the Arizona Commerce Authority, this program provides income tax credits equal to 30% or 35% of the qualified investment amount, claimed over a three-year period.
• Health Insurance Premium Tax Credit: Requires a pre-certified Certificate of Eligibility from ADOR for individual or small business applicants.
• University Research and Development Tax Credit: Available to individual or corporate taxpayers making basic research payments to a university under the jurisdiction of the Arizona Board of Regents. It can be claimed in addition to the Credit for Increased Research Activities.
• Renewable Energy and Healthy Forest Credits: Pre-certified individual and corporate credits are available for Healthy Forest Production, Renewable Energy Production (electricity from solar light, solar heat, wind, or qualifying biomass), and Renewable Energy for Self-Consumption by international operations centers.

• azdor.gov: Tax Credits
• azdor.gov: Home

Federal Business and Self-Employment Taxes (IRS)

Alongside Arizona obligations, the IRS divides federal business tax obligations into five general categories based on how a business is organized: income tax, estimated taxes, self-employment tax, employment taxes, and excise tax. All businesses except partnerships are required to file an annual federal income tax return, while partnerships file an annual information return.

Because federal income tax is a pay-as-you-go system, business owners who do not have enough tax withheld from wages generally make regular estimated tax payments during the year to cover both income tax and self-employment tax.

Under IRS rules, sole proprietors, independent contractors, and self-employed business owners who earn $400 or more in net self-employment earnings (or $108.28 or more in church employee income) are required to file Schedule SE with Form 1040 or 1040-SR and pay federal self-employment (SE) tax. Filers generally figure net earnings first on Schedule C (Form 1040).

The 15.3% self-employment tax rate splits into two parts that behave differently once income grows:

• 12.4% Social Security tax: For calendar year 2026, only the first $184,500 of combined wages, tips, and net self-employment earnings is subject to the 12.4% Social Security tax. By our calculation from the IRS 2026 limit, the maximum Social Security portion of self-employment tax is $22,878 ($184,500 multiplied by 12.4%). Under IRS rules, if a taxpayer's wages and tips subject to Social Security tax already total at least $184,500, the 12.4% Social Security part of the SE tax does not apply to any of their self-employment net earnings.
• 2.9% Medicare tax: Applies to all combined wages, tips, and net earnings from self-employment with no upper cap.
• 0.9% Additional Medicare Tax: Applies once a taxpayer's wages, compensation, or self-employment income (combined with a spouse's on a joint return) exceeds $250,000 for married filing jointly, $125,000 for married filing separately, or $200,000 for single, head of household, or qualifying surviving spouse filers.
• Two above-the-line deductions for self-employed filers: Self-employed individuals can deduct the employer-equivalent portion of their SE tax when figuring adjusted gross income on Form 1040 (which affects income tax, though not SE tax). Under Section 2042 of the Small Business Jobs Act, self-employed individuals are also allowed an income tax deduction for the cost of health insurance when calculating net earnings from self-employment.

• IRS: Self-employment tax (Social Security and Medicare taxes)
• IRS: Business taxes

Federal Employment and Excise Taxes

Employers have federal employment tax responsibilities and forms to file, including Form W-4 (Employee's Withholding Certificate), Form 941 (Employer's Quarterly Federal Tax Return), and Form W-2 (Wage and Tax Statement). Federal employment taxes cover Social Security and Medicare taxes, federal income tax withholding, and Federal Unemployment (FUTA) tax.

Certain business activities are also subject to federal excise taxes based on the products manufactured or sold, the equipment used, or the services provided:

• Form 720: Covers environmental taxes, communications and air transportation taxes, motor fuel taxes, manufacturers taxes, and the tax on the first retail sale of heavy trucks, trailers, and tractors.
• Form 2290: Applies to trucks, truck tractors, and buses used on public highways with a taxable gross weight of 55,000 pounds or more.
• Form 730 and Form 11-C: Apply to businesses accepting wagers or conducting a wagering pool or lottery.

• IRS: Business taxes
• IRS: Self-employment tax (Social Security and Medicare taxes)

Arizona Business Tax Guides by Topic

For entity-level income tax rules, our Arizona LLC and Corporation Tax Filing Guide covers how state corporate, S corporation, partnership, and Schedule C returns connect to federal IRS filings. Retailers and service providers can read the Arizona Transaction Privilege Tax (TPT) and Use Tax Guide for AZTaxes.gov licensing, region codes, and municipal tiered rate rules. Businesses with staff can check the Arizona Employer Payroll and DES Unemployment Tax Guide for the $8,000 SUTA wage base, Form JT-1/UC-001 registration, and quarterly TWS reports, or review the Phoenix and Maricopa County Business Tax Guide for local licensing, County Region Code MCZ, and City Region Code PZ rules.

Aldro is the cheapest way to get your business taxes done: $399 flat, with bookkeeping at $20 a month.

• azdor.gov: Transaction Privilege Tax
• azcc.gov: 10 Steps to Starting a Business in Arizona