Connecticut Tax Brackets 2025
Connecticut state income tax rates for tax year 2025 — 7 progressive brackets from 2% to 6.99%, with separate thresholds for single filers and married filing jointly.
Tax year
2025
Type
Progressive
Rate range
2%–6.99%
Brackets
7
Connecticut state tax at common incomes (2025)
| Taxable income | Single — tax | Single — effective | MFJ — tax | MFJ — effective |
|---|---|---|---|---|
| $50,000 | $2,000 | 4.00% | $1,750 | 3.50% |
| $75,000 | $3,375 | 4.50% | $2,875 | 3.83% |
| $100,000 | $4,750 | 4.75% | $4,000 | 4.00% |
| $150,000 | $7,750 | 5.17% | $6,750 | 4.50% |
| $250,000 | $14,000 | 5.60% | $12,500 | 5.00% |
| $500,000 | $31,250 | 6.25% | $28,000 | 5.60% |
State income tax only. Excludes federal tax, FICA, and local/city taxes. Assumes taxable income (after deductions).
2025 brackets — Single filer
| Taxable income | Rate |
|---|---|
| $0 – $10,000 | 2% |
| $10,000 – $50,000 | 4.5% |
| $50,000 – $100,000 | 5.5% |
| $100,000 – $200,000 | 6% |
| $200,000 – $250,000 | 6.5% |
| $250,000 – $500,000 | 6.9% |
| Over $500,000 | 6.99% |
2025 brackets — Married filing jointly
| Taxable income | Rate |
|---|---|
| $0 – $20,000 | 2% |
| $20,000 – $100,000 | 4.5% |
| $100,000 – $200,000 | 5.5% |
| $200,000 – $400,000 | 6% |
| $400,000 – $500,000 | 6.5% |
| $500,000 – $1,000,000 | 6.9% |
| Over $1,000,000 | 6.99% |
About Connecticut's 2025 rates
Connecticut's progressive income tax applies marginal rates to each income bracket. The state also has a unique "tax recapture" provision that phases out the benefit of lower brackets for high-income taxpayers, which can push effective rates above the stated top marginal rate for some earners. Connecticut exempts Social Security benefits from taxation for taxpayers below certain income thresholds. The state sales tax rate is 6.35%, and property taxes in Connecticut are among the highest in the nation.
Frequently asked questions
What are the Connecticut tax brackets for 2025?
Connecticut has 7 progressive brackets for 2025, ranging from 2% on the lowest bracket up to 6.99% on income above $500,000 (single filer). See the full table above for every rate and threshold.
What is the top Connecticut income tax rate in 2025?
6.99%, applied to taxable income above $500,000 for single filers ($1,000,000 for married filing jointly).
How much Connecticut state tax on $100,000 in 2025?
A single filer with $100,000 of taxable income owes $4,750 in Connecticut state income tax for 2025 — an effective rate of 4.75%. Married filing jointly with the same income owes $4,000 (4.00% effective). Federal tax is separate.
Are Connecticut 2025 tax brackets the same as 2024?
Bracket thresholds may have changed for 2025 via inflation indexing or legislative action. The figures on this page are the Connecticut bracket thresholds in effect for tax year 2025.