What records should businesses keep for payroll taxes?

Payroll Tax Recordkeeping Requirements in Arizona

Maintaining accurate payroll tax records is essential for Arizona businesses to ensure compliance with federal and state tax regulations. Proper recordkeeping supports smooth payroll processing, accurate tax filings, and readiness for audits.

Key Payroll Tax Records to Keep

• Employee Information: Keep records of employee names, addresses, Social Security numbers, and Form W-4 withholding allowances.
• Payroll Registers: Document each pay period’s gross wages, hours worked, pay rates, and deductions for taxes and benefits.
• Tax Withholding Records: Track federal income tax, Social Security, Medicare, and Arizona state income tax withheld from employee wages.
• Tax Deposit Records: Maintain proof of payroll tax deposits made to the IRS and Arizona Department of Revenue (ADOR), including dates and amounts.
• Quarterly and Annual Filings: Retain copies of federal Forms 941 and 940, Arizona Form A1-QRT, and W-2 and W-3 forms issued to employees and filed with tax agencies.
• Employee Classification Documentation: Keep records supporting employee vs. contractor status to ensure correct payroll tax treatment.

Retention Periods and Compliance

As of 2026, Arizona businesses should retain payroll tax records for at least four years from the date the tax becomes due or is paid, whichever is later. This period aligns with IRS guidelines and supports compliance with Arizona Department of Revenue requirements.

Using payroll automation and bookkeeping software can help streamline recordkeeping and ensure timely tax deposits and filings. Regular internal audits of payroll records are recommended to maintain accuracy and reduce compliance risks.