Self-Employment Tax Calculator for Connecticut Freelancers (2026)
Connecticut freelancers pay federal self-employment tax (15.3%) plus 6.5% Connecticut state income tax on top.
Connecticut Tax Overview for Freelancers
Federal SE Tax
15.3%
Connecticut Income Tax
6.5%
SE Tax Deduction
50%
Standard Deduction
$15,700
Estimated Tax by Income — Connecticut Freelancers (2026)
| Annual Income | SE Tax | Federal Tax | CT State Tax | Total Tax | Effective Rate |
|---|---|---|---|---|---|
| $30,000 | -$4,239 | -$1,223 | -$1,950 | -$7,412 | 24.7% |
| $50,000 | -$7,065 | -$3,454 | -$3,250 | -$13,769 | 27.5% |
| $75,000 | -$10,597 | -$6,794 | -$4,875 | -$22,266 | 29.7% |
| $100,000 | -$14,130 | -$11,906 | -$6,500 | -$32,536 | 32.5% |
| $150,000 | -$21,194 | -$22,536 | -$9,750 | -$53,480 | 35.7% |
* Single filer, standard deduction, no other income. For exact figures use the calculator below.
Calculate Your Exact Connecticut Tax Bill
Enter your income and get a full breakdown including quarterly payment amounts.
Open Connecticut Tax Calculator →Frequently Asked Questions — Connecticut Freelancers
What is the self-employment tax rate in Connecticut for 2026?
In Connecticut, self-employed individuals pay the federal self-employment tax of 15.3% plus 6.5% Connecticut state income tax on net earnings. After deductions, the effective combined rate for most freelancers falls between 19% and 22%.
Do Connecticut freelancers need to pay quarterly estimated taxes?
Yes. If you expect to owe $1,000 or more in federal taxes for 2026, the IRS requires quarterly estimated payments. Connecticut also requires quarterly state estimated tax payments if your state tax liability exceeds $500. Due dates: April 15, June 16, September 15, and January 15, 2027.
What business deductions can Connecticut freelancers claim?
All standard federal deductions apply: home office, mileage (67 cents/mile in 2026), health insurance premiums, retirement contributions (up to $70,000 via Solo 401k), software, equipment, and professional development. These deductions reduce both your federal and Connecticut state tax liability.