What tax forms are required for new hires?

Required Tax Forms for New Hires in Connecticut

When hiring employees in Connecticut, it is essential to collect and process specific tax forms to ensure compliance with federal and state payroll requirements.

Federal Tax Forms

• Form W-4 (Employee's Withholding Certificate): Every new employee must complete Form W-4 to determine the correct federal income tax withholding from their paychecks. Employers use this form to calculate withholding amounts accurately.
• Form I-9 (Employment Eligibility Verification): While not a tax form, Form I-9 is required for verifying the employee's eligibility to work in the United States and must be retained as part of compliance.

Connecticut State Tax Forms

• CT-W4 (Connecticut Employee's Withholding Certificate): New hires must complete the CT-W4 form to establish the correct amount of state income tax withholding. Employers use this form to withhold Connecticut state income tax appropriately.
• New Hire Reporting: Employers are required to report all new hires to the Connecticut Department of Labor within 20 days of their hire date. This is part of state compliance and helps with child support enforcement and unemployment insurance administration.

Operational Considerations

• Recordkeeping: Maintain copies of all tax forms securely as part of employee records. This supports payroll accuracy and compliance audits.
• Payroll Systems: Integrate W-4 and CT-W4 data into your payroll system to automate tax withholding calculations and reporting.
• Employee Classification: Ensure proper classification of workers (employee vs. independent contractor) to apply the correct tax form requirements.
• Compliance Updates: As of 2026, verify that you are using the latest versions of all tax forms and follow any updated reporting procedures issued by the IRS and Connecticut Department of Revenue Services.