Arizona Employer Registration: Withholding, DES Unemployment Account and New Hire Reporting

Hiring your first employee in Arizona means registering with two state agencies and then reporting that person to a third. The Arizona Department of Revenue (ADOR) handles income tax withholding. The Department of Economic Security (DES) runs the unemployment insurance account and the state new hire directory. You register for both ADOR withholding and the DES unemployment account through one application, so most employers only need to complete one filing before the first payroll. This guide covers the steps in the order most employers need them, with the fees and deadlines the state publishes.

This article is informational content, not legal or tax advice. Payroll and employment rules change, and a qualified CPA or employment attorney should review your situation before you hire.

Before you register: the prerequisites

Gather these items before you start the employer paperwork, because the JT-1 depends on the first two.

• A federal Employer Identification Number (EIN). The Arizona registration requires a federal EIN, so get one from the IRS first.
• A formed legal entity, if you use one. LLCs file Articles of Organization (Form L010) with the Arizona Corporation Commission for a $50 filing fee. For-profit corporations file Articles of Incorporation with a Certificate of Disclosure for $60. Arizona LLCs file no annual report, but for-profit corporations do, at $45 per year, due in the anniversary month the Commission assigns. An LLC must also publish notice of its formation unless its statutory agent's county is Maricopa or Pima. Start at azcc.gov/corporations and file through the Arizona Business Center.
• A trade name, if you operate under a name other than your legal name. Trade name registration is optional. It is filed with the Arizona Secretary of State, Business Services Division, at azsos.gov/business/tntm. It is separate from the Corporation Commission filing.
• A Transaction Privilege Tax (TPT) license, if you sell taxable goods or services. Arizona issues no general statewide business license. The TPT license from ADOR is a tax license, costs $12 per location, and is the license most businesses actually need. Apply through azdor.gov.
• A city business license. Counties issue no general business license. Many cities and towns require their own business or TPT license on top of the state license, so check with the city where you operate.

Arizona does not require a separate statewide business license for employers as such. Your employer obligations come from the tax and unemployment accounts described below, plus the other requirements in the final section.

Step 1: File one Joint Tax Application (JT-1)

The Joint Tax Application (JT-1) is filed on AZTaxes. It registers your business for ADOR income tax withholding and for the DES unemployment insurance account at the same time. You do not file two separate applications, but you do need the federal EIN before you start.

After processing, DES sends a liability determination and assigns your unemployment insurance (UI) account number. The Arizona withholding account is tied to your EIN. Record both your withholding account information and your UI account number in your payroll system as soon as you receive them. You will need them for every payroll filing, payment and state correspondence that follows.

The ADOR withholding page, reached from azdor.gov, explains the current online steps and the filing schedule ADOR assigns to your account. Confirm your filing frequency there rather than assuming it from a template or another employer's schedule.

Step 2: Set up Arizona income tax withholding with Form A-4

Each new employee completes Form A-4, the Arizona employee withholding election. The A-4 tells you how much Arizona income tax to withhold from each paycheck. Arizona's individual income tax is a flat 2.5 percent on taxable income, but the A-4 lets employees choose a different withholding percentage. Confirm the options available on the current form with ADOR before you enter an employee's election.

If an employee does not return a Form A-4, withhold at the default rate of 2.0 percent. Do not leave the field blank or guess a rate for the employee. Keep the signed A-4 in each personnel file, and replace it when the employee submits a new one.

Withholding is a trust obligation. The money you hold for ADOR belongs to the state, so set up your payroll software to calculate, deposit and report it on the schedule ADOR assigned to you. A missed or late deposit creates penalties and interest that are much harder to fix than the original setup.

Step 3: Manage your DES unemployment insurance account

Once the JT-1 is processed, your employer unemployment insurance account is active with DES. Arizona employers pay unemployment tax through this account, and the rate you pay is not a fixed number you can look up once and forget. DES issues unemployment tax rate notices, so check DES for the current notice on your account.

Do not use a rate from a competitor, a rate from a prior year, or a rate from an online calculator. If you cannot find a current notice, contact DES directly and confirm the rate in writing. Keep every notice in your records, because the rate on your account is the figure you will use to set aside unemployment tax for each payroll period.

Step 4: Report new hires to the Arizona New Hire Directory

Arizona new hire reporting is a separate requirement from the tax and unemployment accounts, and it has its own deadline. Report every new or rehired employee to the Arizona new hire directory that DES operates. The report is made using the information on the W-4 or an equivalent form.

The deadline is 20 days from the hire date. If you report electronically, you may instead meet the requirement with two monthly transmissions, no more than 16 days apart, under A.R.S. 23-722.01(D). Confirm the exact transmission schedule and submission method with DES before you rely on it. Build the new hire report into your onboarding checklist, so it happens on the day the employee starts instead of waiting for the next payroll run.

Many employers miss this step because it sits outside payroll. Assign one person to own it, and keep a dated record of each submission.

Step 5: Meet the other employer requirements

Registration with ADOR and DES does not cover everything you need before the first paycheck. These requirements apply alongside them:

• Workers' compensation coverage. Arizona employers need workers' compensation coverage for their employees. Put a policy in place before the first shift, and do not rely on a verbal promise from an agent or a plan to add coverage later.
• Form I-9 and E-Verify. Complete a Form I-9 for every employee. Arizona requires all employers to use E-Verify, so enroll in E-Verify and run each new hire through it as the process requires.
• Contractor licensing. If your business performs construction work, the Arizona Registrar of Contractors licenses contractors. Confirm that your license class covers the work before you bid or hire.
• City licenses and TPT. If your business sells taxable goods or services, the TPT license and any city business license must be in place before you make taxable sales.

Registration checklist

Use this table to track each registration and its owner. The fees and deadlines are the ones stated in this article, and the details for each step are on the agency page named in the table.

Step	Agency or party	Fee or deadline
Federal EIN	IRS	Required before the JT-1
Entity formation (LLC or corporation)	Arizona Corporation Commission	$50 LLC Articles of Organization; $60 corporation Articles of Incorporation
Trade name (optional)	Arizona Secretary of State	Separate from the entity filing
Joint Tax Application (JT-1)	ADOR and DES	Withholding account tied to EIN; UI account number issued
TPT license (if selling)	ADOR	$12 per location
Form A-4 for each employee	Employee and employer	Default withholding of 2.0 percent if not returned
New hire report	DES, Arizona New Hire Directory	20 days from hire date
Form I-9 and E-Verify	Employer	Required for all Arizona employers
Workers' compensation	Insurance carrier	In place before the first payroll
City business license	City or town	Varies by city; confirm locally

Ongoing obligations after registration

Registration is the start, not the finish. Each payroll period you need to withhold Arizona income tax from employees, calculate unemployment tax under your DES account, and file and pay on the schedules ADOR and DES assign. Each new hire must be reported on time. Each business with a corporate structure must file its annual report with the Corporation Commission. Keep signed Form A-4 forms, Form I-9 records, E-Verify confirmations, new hire submission records, and DES rate notices together in one place, so you can answer an audit or a state inquiry without rebuilding the file.

Set calendar reminders for each recurring deadline the moment you receive the schedule. A payroll provider can handle the calculations, but the registration numbers and the filing responsibility remain yours.

Common mistakes to avoid

• Assuming an LLC files an annual report. Arizona LLCs file none. For-profit corporations file one each year, at $45, and missing it affects the entity's standing.
• Treating the TPT license as your only local requirement. The TPT license is a state tax license. Cities may require their own business license on top of it.
• Skipping Form A-4. Without one, you withhold at the 2.0 percent default. That may not match what the employee expects, and it creates correction work later.
• Waiting until the first paycheck to report the hire. The 20-day clock starts at the hire date, not at payroll.
• Using an old unemployment rate. Check the DES notice for your account each time a new one arrives.

Where to get help

Start with the agency that handles the question. ADOR handles withholding and TPT questions through azdor.gov. The Corporation Commission handles entity filings through azcc.gov/corporations. The Secretary of State handles trade names through azsos.gov/business/tntm. For planning and general small business guidance, the Arizona Small Business Development Center Network is at arizonasbdc.com, and the SBA's Arizona district page is at sba.gov/district/arizona.

For payroll tax setup, unemployment rate questions, or an employee classification decision, a CPA or employment attorney is worth the cost before you hire. A mistake in the first payroll is far more expensive to correct than an hour of professional review up front.

Reminder: this guide is informational content, not legal or tax advice. Confirm current fees, forms, rates and deadlines with the named agency before you act on them.