Tools · Self-Employment Tax
Connecticut 1099 Tax Calculator (2026)
Estimate what you owe on 1099 or self-employment income in Connecticut for 2026. Enter your income and business expenses to see your self-employment tax, federal income tax, Connecticut state income tax, and a rough quarterly payment.
Connecticut self-employment tax calculator
- Net profit (income − expenses)
- $60,000
- Self-employment tax (15.3%)
- −$8,478
- Federal income tax
- −$4,511
- Connecticut income tax
- −$1,775
- Total estimated tax
- $14,764
Connecticut taxes self-employment profit as ordinary income. Connecticut has seven graduated brackets from 2% to 6.99%. The bottom two rates (2% and 4.5%) were cut from 3% and 5% under the 2024 reform. A $15,000 single / $24,000 married personal exemption applies but phases out above $30,000 (single) and $48,000 (married).
A benefit-recapture adds tax back for higher earners (roughly above $200,000 single / $400,000 married), which can push the effective rate close to the flat 6.99% on all income. This is not modeled in the bracket estimate here.
Federal: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration. State: Connecticut Department of Revenue Services.
Estimate for 2026. Self-employment tax is 15.3% on 92.35% of net profit (Social Security capped at the annual wage base); half of it is deducted before federal income tax. Excludes the qualified business income deduction, retirement contributions, health-insurance deduction, credits, and local taxes. This is a planning estimate for general information, not tax advice. Consult a tax professional before making quarterly payments.
How 1099 tax works in Connecticut
Self-employed people pay self-employment tax: 15.3% (Social Security + Medicare) on 92.35% of net profit, with the Social Security portion capped at the annual wage base. Half of that SE tax is deductible before your federal income tax is figured on the rest. Connecticut then taxes your profit as ordinary income. Connecticut has seven graduated brackets from 2% to 6.99%. The bottom two rates (2% and 4.5%) were cut from 3% and 5% under the 2024 reform. A $15,000 single / $24,000 married personal exemption applies but phases out above $30,000 (single) and $48,000 (married).
Because no employer withholds for you, the IRS expects quarterly estimated payments. The calculator divides the annual total by four as a starting point. Your actual quarters can vary with income timing and credits.
Local taxes: A benefit-recapture adds tax back for higher earners (roughly above $200,000 single / $400,000 married), which can push the effective rate close to the flat 6.99% on all income. This is not modeled in the bracket estimate here.
This is a planning estimate, not your final return. It excludes the qualified business income deduction, retirement and health-insurance deductions, and credits. It is general information, not tax advice. Consult a tax professional before making quarterly payments. Federal figures: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration.
1099 tax calculators for other states
Same 2026 engine, each with its own state rules.