Connecticut Income Tax Calculator
Estimate your 2026 Connecticut state income tax in seconds. Enter your annual income and filing status — this free Connecticut income tax calculator applies the verified 2026 Connecticut brackets, standard deduction, exemptions and credits. Runs entirely in your browser.
In 2026, Connecticut has a graduated income tax ranging from 2% to 6.99%. Connecticut offers a $15,000 personal exemption per filer. Connecticut's personal exemption, low-bracket benefit, and credits phase out or are recaptured at higher incomes; this estimate uses the full amounts.
Connecticut 2026 Income Tax Brackets
| Taxable income (Single) | Rate |
|---|---|
| $0 – $10,000 | 2% |
| Over $10,000 – $50,000 | 4.5% |
| Over $50,000 – $100,000 | 5.5% |
| Over $100,000 – $200,000 | 6% |
| Over $200,000 – $250,000 | 6.5% |
| Over $250,000 – $500,000 | 6.9% |
| Over $500,000 | 6.99% |
Married filing jointly
| Taxable income (Joint) | Rate |
|---|---|
| $0 – $20,000 | 2% |
| Over $20,000 – $100,000 | 4.5% |
| Over $100,000 – $200,000 | 5.5% |
| Over $200,000 – $400,000 | 6% |
| Over $400,000 – $500,000 | 6.5% |
| Over $500,000 – $1,000,000 | 6.9% |
| Over $1,000,000 | 6.99% |
Marginal rates: only income inside each band is taxed at that band's rate.
Frequently Asked Questions
What is the Connecticut income tax rate for 2026?
Connecticut has a graduated income tax ranging from 2% to 6.99%.
What deductions and exemptions does Connecticut offer?
Connecticut offers a $15,000 personal exemption per filer.
How accurate is this Connecticut income tax estimate?
It is an annualized estimate: your income minus the 2026 standard deduction (and any state exemptions/credits shown), run through 2026 marginal brackets. It does not include pre-tax deductions like 401(k) contributions, itemized deductions, phaseouts, or local income taxes. Your actual liability can differ.
Sources
Tax figures verified September 2026 for tax year 2026.
Estimate only — not tax advice. This calculator annualizes your income, subtracts the 2026 standard deduction (and state personal exemptions/credits where shown), and applies 2026 marginal brackets. It does not model pre-tax deductions (401(k), health insurance), itemized deductions, credits you may qualify for, phaseouts, or local/city/county income taxes. Consult a tax professional for your situation.