How do I register for Connecticut payroll taxes?

Registering for Connecticut Payroll Tax Account Numbers

Connecticut requires employers to register with the Department of Revenue Services and Department of Labor, Employment Security Division.

Department of Revenue Services Tax Registration Number

• Register online
• Formats: (99999999-999, 9999999-999)
• To find an existing account number, call: (860) 297-5962

Employment Security Division Registration Number

• Register online
• Format: 7 digits (9999999, 99-999-99)
• To find an existing account number, call: (860) 263-6550

Connecticut Payroll Taxes

Payroll Tax Rates

The Department of Labor will assign you an unemployment insurance tax rate typically between 1.9% and 6.8%. New employers generally have an initial rate of 3.2%. There is also a fixed Trust Fund Solvency Tax rate.

Payroll Tax Deposit Schedules

All unemployment taxes are deposited quarterly. The Department of Revenue Services will assign your withholding deposit schedule based on your accumulated withholding during the lookback period. The lookback period is the 12-month period ending on June 30 of the previous year. If you accumulated:

• $2,000 or less in withholding, you’ll deposit quarterly
• $2,000 to $10,000 in withholding, you’ll deposit monthly
• more than $10,000 in withholding, you’ll deposit weekly