What payroll forms do employers need to file?

Payroll Forms Employers Must File in Washington State

Employers operating in Washington need to manage several payroll tax forms to ensure compliance with both state and federal requirements. Proper filing supports accurate tax withholding, reporting, and payment processes.

Federal Payroll Tax Forms

• Form W-4: Collected from employees to determine federal income tax withholding.
• Form W-2: Annual wage and tax statement provided to employees and filed with the Social Security Administration.
• Form 941: Quarterly federal tax return reporting income taxes, Social Security, and Medicare taxes withheld.
• Form 940: Annual federal unemployment tax (FUTA) return.

Washington State Payroll Tax Forms

• Quarterly Combined Excise Tax Return (Form C-3): Used to report and pay state business and occupation (B&O) taxes, including payroll-related taxes.
• Employment Security Department (ESD) Quarterly Tax Report: Reports unemployment insurance taxes withheld from employee wages.
• Department of Labor & Industries (L&I) Quarterly Report: Reports workers’ compensation premiums based on payroll.
• Paid Family and Medical Leave (PFML) Quarterly Report: Reports premiums for state PFML insurance deducted from employee wages and employer contributions.

Operational Tips for Payroll Tax Compliance in Washington

• Maintain Accurate Payroll Records: Keep detailed records of employee wages, hours worked, and tax withholdings to support reporting and audits.
• Automate Payroll Processes: Use payroll software integrated with Washington tax requirements to reduce errors and streamline filings.
• Stay Updated on Tax Rates and Rules: As of 2026, review changes in unemployment insurance rates, PFML premiums, and other payroll-related taxes regularly.
• Schedule Timely Filings: Submit quarterly and annual payroll tax forms by their deadlines to avoid penalties.
• Coordinate with Bookkeeping: Ensure payroll tax payments and filings align with overall financial reporting and cash flow management.