What payroll deductions are employers required to withhold?

Payroll Tax Deductions Employers Must Withhold in Colorado

Employers operating in Colorado are responsible for withholding specific payroll taxes from employee wages. Proper withholding ensures compliance with state and federal regulations and supports accurate payroll processing and reporting.

Required Payroll Deductions

• Federal Income Tax: Employers must withhold federal income tax based on employee Form W-4 information and IRS tax tables.
• Social Security Tax: Withhold 6.2% of wages up to the annual wage base limit for Social Security.
• Medicare Tax: Withhold 1.45% of all wages for Medicare. Additional Medicare tax withholding applies for high earners.
• Colorado State Income Tax: Employers must withhold state income tax according to Colorado Department of Revenue guidelines and employee withholding certificates.
• Unemployment Insurance (UI) Contributions: While UI taxes are primarily employer-paid, some exceptions apply. Employers should review Colorado’s UI tax requirements for proper classification and reporting.

Additional Operational Considerations

• Local Taxes: Colorado does not impose local income taxes, but employers should verify any city-specific requirements.
• Employee Classification: Correctly classifying workers as employees or independent contractors affects withholding obligations.
• Recordkeeping: Maintain accurate records of all withheld amounts and employee wage information for state and federal audits.
• Reporting Requirements: Submit withheld taxes to the IRS and Colorado Department of Revenue on time using appropriate forms and electronic filing methods.
• Payroll Automation: Utilize payroll software to automate withholding calculations, tax deposits, and filings to reduce errors and improve compliance.

As of 2026, employers should regularly review updates from the Colorado Department of Revenue and IRS to stay current on withholding rates and regulations.