Freelance Taxes in Connecticut: Complete 2026 Guide
Rates reviewed · Source: Connecticut Department of Revenue Services
Connecticut has a progressive income tax with rates from 3% to 6.99% on income over $500,000.
Quarterly Estimated Payments
CT requires quarterly estimated payments if you expect to owe $1,000 or more.
| Quarter | Income period | Due |
|---|---|---|
| Q1 | Jan 1 – Mar 31, 2026 | April 15, 2026 |
| Q2 | Apr 1 – May 31, 2026 | June 16, 2026 |
| Q3 | Jun 1 – Aug 31, 2026 | September 15, 2026 |
| Q4 | Sep 1 – Dec 31, 2026 | January 15, 2027 |
myconneCT — Connecticut Department of Revenue Services · Form CT-1040ES · How to pay online
Key Tax Facts for Connecticut Freelancers
- •High cost of living but strong freelance market near NYC
- •Connecticut follows the federal quarterly payment schedule
- •No city income taxes in Connecticut
- •Strong proximity to NYC financial and tech markets
Deductions in Connecticut
Connecticut generally conforms to federal deductions. The standard deduction is $15,000 for single filers.
Top Freelancer Cities in Connecticut
Connecticut freelance tax questions
How much tax do freelancers pay in Connecticut?
Three taxes apply: 15.3% federal self-employment tax on net earnings up to $184,500, federal income tax at your bracket, and Connecticut income tax of up to 6.99%. Connecticut has a progressive income tax with rates from 3% to 6.99% on income over $500,000.
Do Connecticut freelancers have to make quarterly estimated payments?
CT requires quarterly estimated payments if you expect to owe $1,000 or more. Federal estimated payments for 2026 are due Q1 April 15, 2026, Q2 June 16, 2026, Q3 September 15, 2026, Q4 January 15, 2027. Connecticut follows the same schedule.
What can Connecticut freelancers deduct?
Connecticut generally conforms to federal deductions. The standard deduction is $15,000 for single filers.
Where do Connecticut freelancers pay estimated taxes online?
Connecticut accepts online estimated tax payments through myconneCT, operated by the Connecticut Department of Revenue Services. The state estimated tax form is Form CT-1040ES. Federal payments are made separately through IRS Direct Pay or EFTPS.
Tax Information Notice
This content is for informational and educational purposes only. It does not constitute tax, legal, or financial advice. Tax laws change frequently. Always consult a qualified CPA or Enrolled Agent for your specific situation.