Tools · State Income Tax
Connecticut Income Tax Calculator (2026)
Estimate your Connecticut state income tax for 2026. Enter your taxable income and filing status to see what Connecticut taxes and your effective state rate, broken out line by line.
Connecticut state income tax calculator
- Taxable income entered
- $75,000
- Personal exemption
- −$15,000
- Income taxed by Connecticut
- $60,000
- Connecticut income tax
- $2,550
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.
State figures: Connecticut Department of Revenue Services.
Estimate for 2026 state income tax only, based on annual tax brackets — it excludes federal income tax, Social Security and Medicare, local taxes, and any credits. This is general information, not tax advice.
How Connecticut income tax is figured
Connecticut runs graduated brackets: higher slices of income are taxed at higher rates. 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).
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 estimate covers state income tax only. It does not include federal income tax, Social Security and Medicare, or tax credits. It is an annual-bracket estimate, not your final return. This is general information, not tax advice.
Income tax calculators for other states
Same 2026 engine, each with its own state rules.