How to Choose a Payroll Company or PEO in Arizona

Payroll software, payroll services, and PEOs

Arizona runs payroll through two agencies, on a flat income tax that each employee elects a withholding rate against, and there are no local income taxes anywhere in the state.

There are three kinds of companies to choose from, and what separates them is how much of the work they take on and whether they become a co-employer.

• Payroll software. You register with the Department of Revenue and the Department of Economic Security, then run the system yourself. More on payroll and HR software
• A payroll service. Files under your own EIN and handles the state returns for you. More on payroll services
• A PEO. Reports your Arizona wages under its own account and bundles benefits and workers’ comp with it. Requires co-employment. More on PEOs

Payroll and PEO companies based in Arizona

A company based here files Arizona returns every quarter and works the same AZTaxes and Tax and Wage System portals you do.

Payroll and HR providers based in Arizona 38 results

Organization	Type	Headquarters	Coverage	Description
	PEO	Scottsdale, Arizona	50 states	Full-service PEO providing payroll, benefits administration, and workers’ compensation to small and mid-sized employers.
	Payroll service	Tempe, Arizona	AZ, NV, NM	Regional payroll bureau handling processing, tax filing, and time tracking for multi-state employers.
	Software	Phoenix, Arizona	50 states	Cloud payroll and HR platform covering onboarding, time tracking, and benefits enrollment.
	PEO	Gilbert, Arizona	26 states	PEO offering co-employment, group health benefits, and HR compliance support across the Southwest.
	PEO	Tucson, Arizona	14 states	PEO serving small employers with bundled payroll, benefits, and risk management.
	Payroll service	Queen Creek, Arizona	AZ only	Payroll bureau focused on Arizona employers, including quarterly A1-QRT and UC-018 filing.

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What Arizona costs an employer in 2026

Unemployment tax applies to the first $8,000 of each employee’s wages. Senate Bill 1828 raised the base from $7,000 effective in 2023, and it has stayed at $8,000 since.

A new employer pays 2.0%, which puts the tax at $160 a year for anyone earning past that cap. The Department of Economic Security holds you at that rate for a minimum of two calendar years.

After that, Arizona assigns your rate from a reserve ratio. The state adds the taxes you’ve paid, subtracts the benefits charged against your account, and divides that balance by your average taxable payroll across up to three fiscal years.

The ratio lands you in one of 25 groups on the DES Tax Rate Chart, and the 2026 rates run from 0.03% at the top of the positive groups to 8.36% at the bottom of the negative ones.

Against the $8,000 wage base, that’s $2.40 a year per employee at the best rate and $668.80 at the worst. A new employer at 2.0% sits at $160.

Worth knowing where the new employer rate falls. At 2.0% it comes in below the 4.18% assigned to an established employer with a zero reserve ratio, so a company with a poor claims history can pay more than a brand new one.

A.R.S. § 23-730 requires DES to adjust the rates each year to produce only the net required yield, which is why the whole chart shifts annually.

Arizona takes nothing from the employee side beyond income tax. No disability insurance, no paid family leave, no employee share of unemployment, and no local wage tax in any city or county.

Minimum wage, and the two cities that go higher

Arizona’s minimum wage is $15.15 an hour for 2026, up from $14.70. A.R.S. § 23-363(B) ties the annual adjustment to the Consumer Price Index, so the rate moves every January.

Tipped employees have a maximum tip credit of $3.00, putting the cash wage at $12.15 as long as tips bring total pay to the full minimum.

Flagstaff and Tucson both run their own ordinances. Flagstaff sits at $18.35 and Tucson at $15.45, and the local rate governs wherever it exceeds the state figure.

Proposition 206, the Fair Wages and Healthy Families Act, also carries an earned paid sick time requirement that the Industrial Commission enforces alongside the wage rules.

The Form A-4 gap

Arizona hands the withholding decision to the employee. Every new hire completes Form A-4 within five days and picks their own rate from a fixed list: 0.0%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, or 3.5%.

The Department of Revenue sets the default at 2.0% when an employee doesn’t return the form. Arizona’s actual income tax is 2.5%.

Anyone sitting on the default is having 2.0% withheld against a 2.5% liability, and the shortfall shows up when they file. On $60,000 of wages that’s $300 unwithheld across the year.

Two things follow for an employer. Collecting the A-4 inside the five-day window keeps employees off the default, and payroll software needs a field for the elected percentage rather than a single company-wide rate.

Can you run Arizona payroll yourself?

Yes, and Arizona is among the simplest states for it. One flat tax, no local taxes, no state disability or paid leave programs, and a low unemployment wage base. Payroll software handles it for $6 to $25 per employee per month.

Find payroll software that fits your business

Ask whether the software stores a per-employee A-4 percentage. A system that applies one rate across the whole company will withhold the wrong amount for anyone who elected something other than the default.

Full-service software files the A1-QRT and A1-R for you. You stay legally responsible for the taxes either way.

PEO rules specific to Arizona

Arizona registers PEOs with the Secretary of State under A.R.S. § 23-563, and the office maintains a public list of every registrant.

What a registered PEO files

• Every name it does business under, plus every name it has operated under in any state in the preceding five years, including predecessors and successors
• Its principal place of business and every Arizona office it maintains
• A statement of ownership naming everyone who owns or controls 25% or more of the equity
• A statement of management naming the president, chief executive, and anyone with senior executive authority, along with any felony convictions in the preceding ten years
• A financial statement prepared under generally accepted accounting principles, compiled, reviewed, or audited by an independent CPA, dated no earlier than 180 days before filing, and certified as accurate by the chief executive

A felony conviction disclosed in that management statement is a hard bar. The statute directs the Secretary of State to deny the application.

What the agreement has to say

Under § 23-562, a professional employer agreement has to reserve your right to direct and control your own employees, to the extent you need to run the business and meet any licensing obligations that apply to you or your staff.

It also has to require the PEO to pay wages, to withhold, collect, report, and remit payroll and unemployment taxes, and to pay for employee benefits.

§ 23-561 defines the administrative fee as the charge for professional employer services, excluding any portion applied to wages, benefits, workers’ compensation, payroll taxes, or withholding. That distinction is what makes two PEO quotes comparable.

Unemployment reporting, and what happens when you leave

§ 23-614(G) puts unemployment reporting with the PEO. It reports and pays contributions under its own state employer account number, at its own contribution rate.

§ 23-614(H) covers the exit. A client leaving a PEO after at least two years under a professional employer agreement is treated as a new employer with no previous experience record.

That means coming out of a two-year PEO relationship puts you back on the 2.0% new employer rate, whatever your own claims history looked like going in. On 40 employees at the $8,000 wage base, the gap between the new employer rate and a low experience rate runs into the thousands a year.

The same provision applies if your PEO fails to submit reports or make tax payments. Your experience record can be reset by their failure.

Registration, filing, and deadlines

You’ll register with two agencies. The Department of Revenue handles withholding through Form JT-1 at AZTaxes.gov, and you need a federal EIN before you start. The Department of Economic Security handles unemployment tax, with registration due as soon as you hire your first Arizona employee.

Your deposit schedule

Arizona sets your deposit frequency from your average withholding across the previous four quarters.

Withholding Tax Procedure 16-1 sets out how to work out which schedule applies to you.

Returns

• Form A1-QRT is filed quarterly by every employer on a quarterly, monthly, semi-weekly, or one-banking-day schedule. A quarter with zero withholding still needs one.
• Form A1-R reconciles the year, due January 31.
• Form UC-018, the quarterly unemployment tax and wage report, goes to the Department of Economic Security. A quarter with no wages paid still needs one to keep the account active.
• A due date falling on a Saturday, Sunday, or legal holiday moves to the next business day.

The extension nobody mentions

Employers who made every payment on time in the previous quarter get an extra 10 days to file the A1-QRT. The fourth quarter return moves from January 31 to February 10.

The extension applies to the filing rather than the payments behind it.

Other requirements

• New hires and rehires go to the Department of Economic Security New Hire Reporting Center within 20 days.
• Workers’ compensation is required for every public and private employer with at least one employee. A.R.S. § 23-902 sets the test for whether someone counts as an employee or an independent contractor.
• Employment eligibility runs through E-Verify alongside the Form I-9.

Paydays

The Industrial Commission requires every Arizona employer to designate two or more paydays each month, spaced no more than 16 days apart.

A terminated employee gets their final wages within seven working days or by the next payday, whichever comes first.

Residents of four other states

Arizona has reciprocal agreements with California, Indiana, Oregon, and Virginia. A resident of any of those states working in Arizona files Form WEC with you, Arizona income tax stops coming out of their pay, and the form gets renewed each year.

Arizona payroll reference

Your unemployment rate

Your rate arrives at the start of each year on Form UC-603, the Determination of Unemployment Tax Rate. It carries your rate and the factors behind your reserve ratio, and the appeal instructions sit on the notice itself.

Notices also post to the Tax and Wage System by mid-January, under the Document Center.

Send a copy to whoever prepares your returns. A preparer working from last year’s rate will calculate the wrong tax.

Worker classification

Arizona Withholding Tax Ruling 16-4 sets out how the Department of Revenue decides whether someone is an employee or an independent contractor for withholding purposes.

Rates and deadlines are current as of August 2026 and change annually. Verify against the linked source before filing.

Frequently asked questions

• How much should a payroll service cost?

  A payroll service generally runs $20 to $50 per employee per month, payroll software $6 to $25, and a PEO $40 to $150 or 3–12% of gross payroll. Arizona has no local payroll filings to price in, so quotes here are simpler to compare than in states with municipal taxes.

• What are the payroll laws in Arizona?

  You withhold state income tax at whatever percentage each employee elects on Form A-4, defaulting to 2.0% if they don’t file one within five days. You pay unemployment tax on the first $8,000 of wages, carry workers’ compensation from your first employee, and report new hires within 20 days. Pay runs at least twice a month on paydays no more than 16 days apart, at a minimum of $15.15 an hour.

• What is the 7 minute rule for employees?

  It’s a federal Fair Labor Standards Act practice that permits rounding time to the nearest quarter hour. Nothing requires an Arizona employer to round at all, and the state has no separate rounding rule. Both federal and Arizona law require payment for all hours actually worked.

• What is the Arizona withholding rate?

  Employees pick it themselves on Form A-4, choosing from 0.0%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, or 3.5%. If someone doesn’t file the form within five days of hire, you withhold at the 2.0% default until they elect something else.

• Why is the default withholding rate lower than the tax rate?

  Arizona’s income tax is a flat 2.5% while the default withholding rate is 2.0%. An employee left on the default has less withheld than they owe, and the difference comes due when they file.

• How much is unemployment tax in Arizona?

  A new employer pays 2.0% on the first $8,000 of each employee’s wages, which comes to $160 a year per person. That rate holds for at least two calendar years. After that, experience rates run from 0.03% to 8.36% depending on your reserve ratio, which works out to between $2.40 and $668.80 per employee per year.

• What is the Arizona minimum wage in 2026?

  $15.15 an hour statewide, up from $14.70. Tipped employees can be paid $12.15 with a maximum $3.00 tip credit. Flagstaff is $18.35 and Tucson is $15.45.

• How often do I have to pay employees in Arizona?

  At least twice a month, on designated paydays no more than 16 days apart. A terminated employee gets their final wages within seven working days or by the next payday, whichever comes first.

• Does Arizona have local payroll taxes?

  No. There are no local income taxes in any Arizona city or county. Flagstaff and Tucson do set their own minimum wages, which override the state rate.

• What does Arizona deduct from an employee’s paycheck?

  State income tax and nothing else. Arizona has no employee-side unemployment, disability, or paid family leave contribution.

• How often do I file Arizona withholding?

  Form A1-QRT is filed quarterly regardless of your deposit schedule, including quarters where you withheld nothing. Deposits run annually, quarterly, monthly, semi-weekly, or next business day depending on your previous four quarters of withholding.

• What happens to my unemployment rate if I leave a PEO in Arizona?

  Under A.R.S. § 23-614(H), a client that has been under a professional employer agreement for at least two years is treated as a new employer with no previous experience record on leaving. You return to the 2.0% new employer rate regardless of your own claims history. The same applies if your PEO fails to file reports or pay taxes.

• Does Arizona register PEOs?

  Yes, with the Secretary of State under A.R.S. § 23-563. Registrants file ownership and management statements, a CPA-prepared financial statement, and every business name used in any state over the preceding five years. A felony conviction among management requires the Secretary of State to deny the application.

• Who is the employer when using a PEO?

  Both of you, in different senses. The PEO becomes the employer of record for tax and insurance purposes while you direct the work, set pay, and decide who gets hired. That arrangement is called co-employment.

• Is it cheaper to do your own payroll?

  On direct cost, yes. Software at $6 to $25 per employee per month beats a service at $20 to $50. The comparison shifts once you count the hours and the penalty exposure.

• Can I do payroll without a payroll company?

  Yes. Arizona is one of the simpler states to run yourself, with one flat tax and no local filings. What you take on is the filing calendar and the liability that comes with missing it.