Connecticut Freelance Tax Calculator 2025
Connecticut freelancers face a 6.5% marginal state rate plus no requirement to pay estimated taxes if you owe under $1,000. Enter your income below for a complete breakdown of SE tax, federal income tax, and state tax — plus your exact quarterly payment amounts.
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Based on 2025 federal tax brackets and state rates. Figures are estimates for planning purposes only. Consult a tax professional for advice specific to your situation.
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Your results will show a full tax breakdown, quarterly payments, and how much to set aside.
Freelance taxes in Connecticut
State Income Tax
6.5%
Effective rate on SE income
SE Tax Rate (Federal)
15.3%
Same in every state (SS + Medicare)
Largest Freelance City
Hartford
Connecticut's top freelance hub
Recommended Set-aside
30–35%
Of gross income for taxes
Freelancers in Connecticut are subject to the federal self-employment tax of 15.3% on 92.35% of net earnings — this covers Social Security (12.4% up to $176,100) and Medicare (2.9% with no cap). On top of that, you'll pay federal income tax using 2025 brackets, plus Connecticut state income tax at up to 6.5%. Use the calculator above to get your exact combined bill and quarterly payment breakdown.
Frequently asked questions
Do freelancers in Connecticut pay state income tax?
Yes. Connecticut freelancers pay a 6.5% state income tax in addition to federal income tax and self-employment tax.
How much self-employment tax do Connecticut freelancers pay?
Self-employment tax is federal — it's the same rate in every state. Freelancers in Connecticut pay 15.3% SE tax on 92.35% of net self-employment income (12.4% Social Security up to $176,100 + 2.9% Medicare with no cap). You can deduct 50% of this from your AGI.
Do I need to pay quarterly estimated taxes in Connecticut?
Yes, if you expect to owe $1,000 or more in federal taxes for the year. Connecticut also requires quarterly estimated state tax payments if you expect to owe more than the state threshold. Federal deadlines are April 15, June 16, September 15, and January 15.
What percentage of income should Connecticut freelancers save for taxes?
Connecticut freelancers should generally set aside 30–35% of gross income for taxes, covering federal income tax, 15.3% self-employment tax, and 6.5% state income tax.
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