Connecticut income tax calculator
An effective rate of 3.4%, with 5.5% on the next dollar. That is the 26th-largest state income tax bill on $75,000 of the 51 jurisdictions.
- Top rate
- 6.99%
- Rate on your last dollar
- 5.5%
- State taxable income
- $60,000
- Effective rate
- 3.4%
Connecticut's income tax is graduated: 7 brackets running from 2% to 6.99%, the 12th-highest top rate of the 51 jurisdictions. The top rate applies to a single filer's taxable income above $500,000. Joint filers get exactly double the bracket widths at every rate, so a married couple pays what two single filers on half the income each would pay. Heads of household get a third schedule of their own, wider than the single one. Connecticut has no standard deduction, so a single filer subtracts a $15,000 personal exemption instead.
Connecticut 2026 tax brackets
3 distinct schedules. Rates apply to state taxable income — income after the deductions in the next table, not your gross salary.
Single
| State 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% |
| $500,000 and above | 6.99% |
Married filing jointly
| State 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% |
| $1,000,000 and above | 6.99% |
Head of household
| State taxable income | Rate |
|---|---|
| $0 – $16,000 | 2% |
| $16,000 – $80,000 | 4.5% |
| $80,000 – $160,000 | 5.5% |
| $160,000 – $320,000 | 6% |
| $320,000 – $400,000 | 6.5% |
| $400,000 – $800,000 | 6.9% |
| $800,000 and above | 6.99% |
Connecticut deductions and exemptions
| Amount | Single | Married filing jointly | Head of household |
|---|---|---|---|
| Personal exemption (subtracted from income) | $15,000 | $24,000 | $19,000 |
Work out your own Connecticut tax
Already set to Connecticut and the 2026 federal schedule. Change the income, the filing status or the year and everything below updates.
Wages, interest, business income, etc. Exclude pre-tax 401(k) and HSA contributions.
Adds state income tax using that state's own rate schedule and standard deduction. Pick the last option to type a flat rate instead.
- Effective federal tax rate
- 10.23%Federal tax as a share of the income you entered.
- Marginal bracket
- 22%The rate on your next dollar of taxable income.
- State income tax
- $2,550.00From the selected state's rate schedule, or your flat rate.
- Federal + state income tax
- $10,220.00
- Income after income tax
- $64,780.00
- Taxable income
- $58,900.00
- Deduction applied
- $16,100.00
Assumptions
- Ordinary-income rate schedules only; no credits, AMT, capital-gains rates, QBI deduction or the 2025–2028 senior deduction.
- Standard deduction (plus additional amounts for 65+/blind) or your itemized figure, whichever is larger; no dependent-filer limitation.
- Married filing separately uses half the joint federal thresholds, per the IRS schedule, and the state's single-filer schedule.
- State tax uses each state's published rate schedule, standard deduction and personal exemption for the tax year shown with the results; the source URL and year for the state you pick are printed above the results, along with the simplifications made for that state.
- State figures exclude county, municipal and city income taxes, itemized deductions, retirement and capital-gains exclusions, and credits that phase out. Unlisted states fall back to the flat rate you enter.
| Taxable income | Rate | Your income in this bracket | Tax |
|---|---|---|---|
| $0 – $12,400 | 10% | $12,400 | $1,240 |
| $12,400 – $50,400 | 12% | $38,000 | $4,560 |
| $50,400 – $105,700 | 22% | $8,500 | $1,870 |
| $105,700 – $201,775 | 24% | $0 | $0 |
| $201,775 – $256,225 | 32% | $0 | $0 |
| $256,225 – $640,600 | 35% | $0 | $0 |
| Over $640,600 | 37% | $0 | $0 |
Connecticut income tax at other incomes
| Gross income | Single | Effective | Married jointly | Effective |
|---|---|---|---|---|
| $30,000 | $425 | 1.42% | $120 | 0.40% |
| $50,000 | $1,325 | 2.65% | $670 | 1.34% |
| $75,000 | $2,550 | 3.40% | $1,795 | 2.39% |
| $100,000 | $3,925 | 3.92% | $2,920 | 2.92% |
| $150,000 | $6,850 | 4.57% | $5,430 | 3.62% |
| $250,000 | $13,025 | 5.21% | $11,060 | 4.42% |
State income tax only, filing status as shown, after Connecticut’s own deductions. Federal tax is on top of every figure here.
How the neighbours compare
Connecticut borders 3 other jurisdictions. Moving across a state line is the one way most people can actually change which of these schedules applies to them, so here is the same income run through each of them.
| State | Rate structure | $50,000 | $75,000 | $150,000 |
|---|---|---|---|---|
| Connecticut | 2% – 6.99% | $1,325 | $2,550 | $6,850 |
| Massachusetts | 5% – 9% | $2,280 | $3,530 | $7,280 |
| New York | 4% – 10.9% | $2,145 | $3,520 | $7,952 |
| Rhode Island | 3.75% – 5.99% | $1,258 | $2,196 | $5,523 |
State income tax on a single filer, after each state’s own deductions. Federal tax is identical wherever you live, so the difference between these rows is the whole difference.
What these Connecticut figures leave out
Recorded against Connecticut in the data rather than glossed over, because they change real bills.
- Connecticut's real calculation has three further steps this model does not carry, and together they matter a great deal above about $56,500 of income: the personal exemption phases out to zero (by $44,000 single, $71,000 joint, $56,000 head of household), the benefit of the 2% bracket is added back, and a recapture of up to $3,400 (single) or $6,800 (joint) applies at high incomes. Tax for middle and higher earners is therefore understated.
- Connecticut also grants personal tax credits of up to 75% of the tax at lower incomes, which would reduce the figure shown.
- Connecticut has no standard deduction; the personal exemption shown is the full amount before any phase-out.
Frequently asked questions
▸Does Connecticut have a state income tax?
Yes. Connecticut has a graduated income tax with 7 brackets, from 2% up to 6.99%.
▸How much state income tax would I pay on $75,000 in Connecticut?
About $2,550 for a single filer — an effective rate of 3.4%. That is $75,000 less $15,000 of state deductions, leaving $60,000 of taxable income taxed at 5.5% at the margin.
▸What is the top income tax rate in Connecticut?
6.99%, the 12th-highest among the 50 states and DC. It applies to a single filer's taxable income above $500,000.
▸What is the Connecticut standard deduction?
Connecticut has no standard deduction. It allows a $15,000 personal exemption per filer instead, subtracted from income before the rates apply.
Source
Connecticut Department of Revenue Services — Form CT-1040ES, 2026 Estimated Income Tax
Tax year 2026 figures, last checked against the source on 2026-09-09.
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Connecticut income tax calculator: Connecticut income tax on $75,000, filing single is $2,550. Source: https://www.calculateitnow.dev/connecticut-income-tax-calculator