What payroll deductions are employers required to withhold?

Payroll Tax Deductions Employers Must Withhold in Iowa

When managing payroll in Iowa, employers are required to withhold specific payroll taxes and deductions to remain compliant and ensure accurate employee compensation.

Mandatory Payroll Deductions

• Federal Income Tax: Employers must withhold federal income tax based on employee W-4 forms and IRS tax tables.
• Social Security Tax: Withhold 6.2% of wages up to the annual limit as part of FICA taxes.
• Medicare Tax: Withhold 1.45% of all wages for Medicare tax; an additional 0.9% applies for high earners, which employers must track.
• Iowa State Income Tax: Employers are required to withhold Iowa state income tax according to the employee’s withholding allowance certificate (Form IA W-4) and Iowa Department of Revenue tables.
• Iowa State Unemployment Insurance (SUI): While employers pay SUI taxes, they do not withhold this from employee wages.

Additional Considerations

• Local Taxes: Iowa does not impose local payroll taxes, so no local withholding is generally required.
• Voluntary Deductions: Employers may also withhold voluntary deductions such as health insurance premiums, retirement contributions, or wage garnishments as authorized by the employee or court orders.
• Recordkeeping and Reporting: Maintain accurate records of all withheld amounts and submit timely federal and state payroll tax reports to avoid penalties.
• Automation: Use payroll software to automate withholding calculations and tax filings to improve accuracy and compliance.

As of 2026, regularly review updates from the Iowa Department of Revenue and the IRS to ensure withholding rates and rules remain current.