Connecticut income tax calculator (2026)

Connecticut has a graduated income tax with 7 rates from 2% to 6.99% for 2026. A single filer earning $75,000 pays about $2,490 in Connecticut income tax and $7,670 in federal income tax — $10,160 combined. Enter your own income and filing status below.

  • Updated for the 2026 tax year
  • Top Connecticut rate 6.99%
  • Federal: IRS Rev. Proc. 2025-32
  • State: Tax Foundation 2026 table

Your details

Tax year

Your annual gross pay before any deductions (W-2 box 1 plus pre-tax deductions).

$

Interest, side income, short-term gains.

$

Traditional 401(k)/403(b), HSA and health premiums taken from your paycheck.

$
› Itemizing, tips, overtime or age 65+

Mortgage interest, SALT (capped), charity. Leave at 0 to use the standard deduction.

$

Deductible up to $25,000 (2025–2028).

$

The extra “half” in time-and-a-half. Up to $12,500 ($25,000 joint).

$

Estimated 2026 income tax (federal + state)

$10,160

Effective federal rate 10.2% · top federal bracket 22%

Where your income goes
  • You keep 79%
  • Federal income tax 10%
  • State income tax 3%
  • Social Security & Medicare 8%
How your income tax is calculated
1Total income$75,000
2Adjusted gross income (AGI)$75,000
3Standard deduction−$16,100
4Taxable income$58,900
5Federal income taxMarginal rate 22%$7,670
6Connecticut income tax2026 single filer$2,490
7Total income tax$10,160

Plus $5,738 in Social Security and Medicare withheld from wages. All taxes together: $15,897 (21.2% of income).

Federal tax bracket by bracket
RateIncome in bracketTax
10%$12,400$1,240
12%$38,000$4,560
22%$8,500$1,870
Assumptions behind this estimate (1)
  • Payroll taxes (Social Security and Medicare) are shown separately below — they are not income tax.

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How much income tax do you pay in Connecticut?

At $75,000 of single-filer wages, Connecticut’s estimated income tax of $2,490 ranks 23 of 51 (1 = highest) among the 50 states and DC.

Salary (single)Federal income taxConnecticut income taxSocial Security & MedicareTake-home pay
$50,000$3,820$1,276$3,825$41,080
$75,000$7,670$2,490$5,738$59,103
$100,000$13,170$3,865$7,650$75,316
$150,000$24,734$6,784$11,475$107,007

Single filer, standard deduction, no pre-tax deductions or credits. Connecticut also has an employee-paid disability or paid-leave premium (typically under 1% of wages) that isn’t included here.

What are the Connecticut income tax brackets for 2026?

RateTaxable income (single)
2%Up to $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

2026 single filer. Married couples may have wider brackets in Connecticut.

How is the federal part calculated?

Federal income tax uses the same 2026 brackets in every state: 10% up to $12,400 of taxable income for single filers, rising to 37% above $640,600, after a $16,100 standard deduction. See the full table on the federal income tax calculator.

Compare other states

See your paycheck in Connecticut after taxes, or pick another state on the income tax calculator.

Frequently asked questions

What is the Connecticut income tax rate for 2026?

Connecticut has a graduated income tax with 7 rates from 2% to 6.99% for 2026 (2026 single filer).

How much is $100,000 after taxes in Connecticut?

A single filer earning $100,000 in Connecticut takes home about $75,316 a year ($2,897 every two weeks) after $13,170 federal income tax, $3,865 state income tax and $7,650 in payroll taxes, using the standard deduction and no pre-tax deductions.

Does this include local or city income tax?

No. Some cities and counties add their own income tax (for example New York City, Philadelphia, Detroit, Maryland counties and many Ohio and Pennsylvania localities). Add those separately if they apply to you.

Why does my Connecticut return show a different number?

This estimate applies Connecticut’s 2026 rates to your federal taxable income. Connecticut may use its own standard deduction, exemptions, credits and joint-filer brackets, so your actual return can differ by a few hundred dollars.

Sources

Estimates only — not tax advice. CalciTools is not a CPA or law firm. These figures are educational estimates based on published IRS and state rates and a simplified model (they don't cover every deduction, credit, or situation). Verify with the IRS, your state tax agency, or a tax professional before making payments. Sources: IRS Rev. Proc. inflation adjustments & state Departments of Revenue.