Connecticut income tax rates for 2026
Seven brackets from 2% to 6.99%; the benefit of the lower brackets is phased out at higher incomes. The calculation starts from federal adjusted gross income with Connecticut modifications. Each rate applies only to the slice of taxable income inside its bracket, so earning enough to reach a higher bracket never lowers your income after tax.
| Rate | Taxable income |
|---|---|
| 2% | $0 – $10,000 |
| 4.5% | $10,001 – $50,000 |
| 5.5% | $50,001 – $100,000 |
| 6% | $100,001 – $200,000 |
| 6.5% | $200,001 – $250,000 |
| 6.9% | $250,001 – $500,000 |
| 6.99% | Over $500,000 |
| Rate | Taxable income |
|---|---|
| 2% | $0 – $20,000 |
| 4.5% | $20,001 – $100,000 |
| 5.5% | $100,001 – $200,000 |
| 6% | $200,001 – $400,000 |
| 6.5% | $400,001 – $500,000 |
| 6.9% | $500,001 – $1,000,000 |
| 6.99% | Over $1,000,000 |
| Rate | Taxable income |
|---|---|
| 2% | $0 – $16,000 |
| 4.5% | $16,001 – $80,000 |
| 5.5% | $80,001 – $160,000 |
| 6% | $160,001 – $320,000 |
| 6.5% | $320,001 – $400,000 |
| 6.9% | $400,001 – $800,000 |
| 6.99% | Over $800,000 |
Married people filing separately use the single brackets.
Deductions, exemptions and credits
Before the rates apply, Connecticut allows a personal exemption of up to $15,000 (single) or $24,000 (joint) that phases out above $30,000 and $48,000 of income. The calculator uses these for the filing status you choose; dependent exemptions and credits, which lower the tax further for families, are not included.
- Connecticut’s personal tax credit (1%–75% of tax for lower incomes) is not included, so estimates for single filers under about $65,000 may be slightly high.
- The 2% bracket phase-out and benefit recapture are applied to single and joint filers only; head-of-household and separate-return estimates may be low at higher incomes.
Worked example: $75,000 in Connecticut
Single filer with $75,000 of income before state deductions.
Brackets: 2% × $10,000.00 + 4.5% × $40,000.00 + 5.5% × $25,000.00 = $3,375.00
Plus 2% bracket phase-out: $100.00
Connecticut income tax = $3,475.00 — an effective rate of 4.63% and a marginal rate of 5.5%.
Connecticut income tax at common incomes
| Income | Single | Effective | Married jointly | Effective |
|---|---|---|---|---|
| $30,000 | $425 | 1.42% | $120 | 0.4% |
| $50,000 | $2,000 | 4% | $760 | 1.52% |
| $75,000 | $3,475 | 4.63% | $2,875 | 3.83% |
| $100,000 | $4,975 | 4.97% | $4,000 | 4% |
| $150,000 | $8,225 | 5.48% | $7,250 | 4.83% |
| $250,000 | $15,400 | 6.16% | $13,200 | 5.28% |
Income before state deductions; standard deduction and personal exemptions for the filer (and spouse) only; no dependents, itemized deductions or local taxes.
Connecticut compared with nearby states
At $75,000 (single), Connecticut ranks 9 of 51 for state income tax, where 1 is the highest.
| State | Tax on $75,000 | Effective rate | Top rate |
|---|---|---|---|
| Connecticut | $3,475 | 4.63% | 6.99% |
| New York | $3,453 | 4.6% | 10.9% |
| Massachusetts | $3,530 | 4.71% | 9% |
| Rhode Island | $2,196 | 2.93% | 5.99% |
More about taxes in Connecticut
- Connecticut phases out the benefit of its lower brackets as income rises, so many high earners pay close to their top rate on all income.
Frequently asked questions
What is the Connecticut income tax rate for 2026?
Seven brackets from 2% to 6.99%; the benefit of the lower brackets is phased out at higher incomes. A single filer with $75,000 of income is in the 5.5% bracket but pays an effective 4.63%, because lower slices of income are taxed at lower rates.
How much Connecticut income tax do I pay on $75,000?
About $3,475 for a single filer — 4.63% of income. A married couple with $150,000 owes about $7,250.
What deductions does Connecticut allow?
Connecticut allows a personal exemption of up to $15,000 (single) or $24,000 (joint) that phases out above $30,000 and $48,000 of income. Dependent exemptions or credits, where the state offers them, lower the tax further.
Is Connecticut's income tax higher than its neighbors'?
At $75,000 (single), Connecticut ranks 9 of 51 for state income tax, where 1 is the highest. Among nearby states, Rhode Island is lowest at $2,196 and Massachusetts is highest at $3,530.
Estimates only — not tax advice. Connecticut figures: Tax Foundation, State Individual Income Tax Rates and Brackets, 2026 (as of Jan. 1, 2026); Connecticut DRS Form CT-1040 instructions. Checked October 2026. Your return may include income, deductions and credits this estimate leaves out.