Connecticut (CT) Paycheck Calculator 2026

Choosing your Form CT-W4 withholding code

Connecticut withholding is driven by a single letter on Form CT-W4, the Employee's Withholding Certificate. If you do not hand one in, your employer must withhold at the top rate of 6.99% with no exemption at all, so filing a CT-W4 matters more here than in most states. You must give your employer a new form within ten days if your filing status changes.

• Code D withholds at the highest level, with no personal exemption or credit, and is the safe choice if you have investment income or a second job.
• Two working spouses who both choose code A may end up over- or under-withheld, because the personal exemption and credit phase out on combined income.
• Employers must send copies of certain code E certificates to the Department of Revenue Services.

CT Paid Leave on every paycheck

Connecticut employees pay 0.5% of wages to CT Paid Leave, which funds paid family and medical leave. The contribution continues until your wages with that employer reach the Social Security limit ($184,500 in 2026). On $1,000 a week that is $5 a week. You cannot opt out if you work for a covered employer; self-employed people and sole proprietors are not required to participate but may opt in.

If you have two jobs, each employer deducts until you hit the cap with that employer, so you can overpay. The CT Paid Leave Authority will refund the excess after year-end if you send proof of earnings, such as your final pay stubs and W-2s.

Two example Connecticut paychecks

Single filers paid bi-weekly, no pre-tax deductions:

• Actual withholding at higher incomes may run a little above these estimates because Connecticut recaptures the benefit of its lower brackets, which the calculator does not model.

Working across the New York and Massachusetts borders

Connecticut has no reciprocity agreement with its neighbours. Instead, the employer of a Connecticut resident who works in another state withholds that state's tax first and then withholds Connecticut tax only to the extent the Connecticut amount is higher. If you work in New York and the New York withholding is larger than the Connecticut tax on the same wages, no Connecticut tax is withheld.

Nonresidents who work in Connecticut have Connecticut tax withheld on Connecticut wages. Those who work partly inside the state file Form CT-W4NA so the employer can apportion. A "15-day rule" applies: a nonresident who works in Connecticut 15 days or fewer in a year has no Connecticut-source wages, but if the 16th day comes, withholding is due on all Connecticut days, including the first 15. Residents of states with a "convenience of the employer" rule are treated under similar rules when they work from home for a Connecticut employer.

Bonuses and overtime

Supplemental pay such as bonuses, commissions and overtime is added to regular wages for withholding when both are paid together, and Connecticut tax is figured on the total as one payment. When a bonus is paid on its own, the method depends on whether income tax was withheld from your regular wages. There is no flat Connecticut supplemental rate like the federal 22%.