Connecticut Income Tax Calculator
Calculate your Connecticut state income tax alongside federal tax. See the full bracket breakdown, effective rate, and combined tax liability.
Last updated: · Tax Foundation (2025 state brackets) + IRS Rev. Proc. 2025-32 (2026 federal)
On a $75,000 salary in Connecticut (single filer, 2025), your estimated state income tax is $2,550.00 (3.4% effective rate). Combined with federal tax of $7,670.00, your total income tax is $10,220.00 (13.6% combined effective rate). Connecticut has progressive brackets with a top rate of 6.99%. Source: Tax Foundation, state revenue department.
Connecticut Deduction: $15,000.00
Personal exemption: $15,000.00
Personal exemption phases out at higher incomes. Also imposes a recapture tax that can increase effective rates.
Federal estimates use 2026 IRS brackets. State estimates use 2025 state rate data.
Results
Connecticut Tax Bracket Breakdown
| Rate | Range | Tax |
|---|---|---|
| 2.00% | $0 – $10,000 | $200.00 |
| 4.50% | $10,000 – $50,000 | $1,800.00 |
| 5.50% | $50,000 – $100,000 | $550.00 |
| Total Connecticut Tax | $2,550.00 | |
Compare Connecticut with Other States
How This Is Calculated
Connecticut uses a progressive income tax system. Each bracket's rate applies only to income within that range.
| Rate | Income Range (Single) |
|---|---|
| 2.00% | $0 – $10,000 |
| 4.50% | $10,000 – $50,000 |
| 5.50% | $50,000 – $100,000 |
| 6.00% | $100,000 – $200,000 |
| 6.50% | $200,000 – $250,000 |
| 6.90% | $250,000 – $500,000 |
| 6.99% | $500,000 – No limit |
Data source
State bracket data from the Tax Foundation (2025 State Individual Income Tax Rates and Brackets). Cross-referenced with the Connecticut revenue department. Federal brackets from IRS Rev. Proc. 2025-32 (2026).
Frequently Asked Questions
- How much is Connecticut income tax on $75,000?
- On a $75,000 salary in Connecticut, you would owe approximately $2,550.00 in state income tax (3.4% effective rate) plus $7,670.00 in federal income tax, for a combined total of $10,220.00 (13.6% combined effective rate).
- What is the Connecticut income tax rate for 2025?
- Connecticut uses a progressive income tax system with rates ranging from 2.00% to 6.99%. Personal exemption phases out at higher incomes. Also imposes a recapture tax that can increase effective rates.