Connecticut Paycheck & Income Tax Calculator

How Connecticut income tax works

Connecticut has seven bands. For a single filer: 2% on the first $10,000 of Connecticut taxable income, then 4.5% to $50,000, 5.5% to $100,000, 6% to $200,000, 6.5% to $250,000, 6.9% to $500,000 and 6.99% above. Filing jointly, every threshold is exactly doubled.

Two things make Connecticut unusual before any of that applies.

There is no deduction of any kind. No standard deduction, no itemized deductions. Connecticut starts from your federal adjusted gross income — the figure before the federal standard deduction comes off — and the only thing it subtracts is a personal exemption of $15,000 for a single filer, $24,000 joint. That exemption is withdrawn as income rises and is gone entirely above $44,000.

And the rate schedule is not the whole charge. Connecticut adds two further amounts to the tax the bands produce, then hands back a percentage as a credit. The order is set out on the state’s own Tax Calculation Schedule, and it runs: income, less the exemption, tax from the bands, plus the 2% phase-out add-back, plus the tax recapture, then multiply by a decimal and subtract that as your credit.

On $75,000 a single filer has no exemption left, so all $75,000 is taxable. The bands raise $3,375. The add-back puts $100 on top. There is no credit at that income. The bill is $3,475 — an effective state rate of 4.63%, not the 4.50% the bands alone would suggest.

The two charges that are not in the rate table

This is the part almost every Connecticut calculator gets wrong, because both charges live in separate tables from the rate schedule and neither is a percentage.

The 2% rate phase-out add-back takes back the benefit of the lowest band. Above $56,500 of Connecticut AGI a single filer pays $25 more for each $5,000 of income, up to a maximum of $250. That ceiling is not arbitrary: $250 is exactly 2.5 percentage points — the gap between 2% and 4.5% — on the $10,000 the bottom band covers. Once you have paid it, the 2% band has been canceled out entirely. Filing jointly the figures double: from $100,500, up to $500.

The tax recapture is bigger, and it goes after the other low bands the same way. For a single filer it starts above $105,000 and climbs in three phases with plateaus between them:

Filing jointly, every figure in that table is doubled — it starts at $210,000 and tops out at $6,800.

Together the two can add $3,650 to a single filer’s bill. At a $250,000 salary the recapture on its own is $1,150, about 7.5% of everything Connecticut charges. A calculator that applies the seven bands and stops will be wrong by that much.

The figures on this page apply both.

An exemption that vanishes $1,000 at a time

Connecticut does not taper its personal exemption smoothly. It removes it in whole $1,000 blocks, and the rule counts any fraction of $1,000 of income as a full step.

For a single filer the exemption is $15,000 up to $30,000 of Connecticut AGI, then drops $1,000 for each further $1,000, hitting nil above $44,000. Filing jointly it is $24,000 to $48,000, falling to nil above $71,000.

The consequence is a set of cliffs. One extra dollar of salary can move you into the next block and cost a full $1,000 of allowance — and the add-back and recapture are stepped the same way. Every figure below is what this calculator returns on either side of a step:

None of that is a rounding artifact. It is how the tables are drawn, and it means a $200,000 earner who negotiates a $1 raise pays $90 for it.

The practical advice is narrow but real: if your income lands within a few hundred dollars of one of those lines, a deductible contribution that pulls your AGI back under it is worth far more than its size suggests.

A credit that is a share of your tax

Connecticut’s personal tax credit is not a fixed sum. It is a percentage of the tax you owe, and the percentage steps down as income rises — from 75% at the bottom to nothing at all.

For a single filer it runs from 75% up to $18,800 of AGI, down through .35, .15 and .10, and reaches nil above $64,500. Filing jointly it survives to $100,500.

Two details matter. First, because it is a percentage, it is applied after the add-back and the recapture, so it takes a share of the enlarged figure rather than the bands alone. Second, it does real work at modest incomes: a single filer on $30,000 owes $425 from the bands and gets $63.75 of it back, paying $361.25 — an effective state rate of 1.2%.

The gap between filing statuses is wide here. On $75,000 a single filer pays $3,475 with no credit at all, while a couple filing jointly on the same $75,000 pay $2,587.50 — $887.50 less, because their bands are twice as wide and their credit is still alive.

Take-home pay at every salary in Connecticut

After federal tax, Connecticut state tax, FICA and the 0.5% CT Paid Leave contribution, with the exemption withdrawal, the add-back and the recapture all applied at each income. With no local income tax anywhere in the state, these figures hold in Bridgeport, Stamford, New Haven, Hartford and Waterbury alike.

What lands in your account each payday

On $75,000 a year in Connecticut, filing single, split across the pay schedules employers actually use.

CT Paid Leave takes another 0.5%

Connecticut Paid Leave is funded entirely by employees. The Paid Leave Authority is blunt about it: “Employers deduct 0.5% from an employee’s pay.” There is no employer share to split, and no opting out — if you work for a covered employer in Connecticut, it comes off.

It is capped at the Social Security contribution limit, which is $184,500 for 2026, so the most anyone contributes is $922.50 for the year.

On $75,000 that $375 is about 11% again on top of the $3,475 of income tax. It is deducted at source rather than settled on your return, which is why it goes missing from take-home figures built from the tax tables alone. The figures on this page include it.

Dates that matter for the 2026 tax year

Connecticut returns (Form CT-1040) are due April 15, 2027, matching the federal deadline. Estimated payments, where required, fall on April 15, June 15 and September 15, 2026, and January 15 2027 — and Connecticut asks for them once you expect to owe $1,000 or more after withholding.

Two things this page does not model, both of which can only reduce what you owe. Connecticut allows a property tax credit of up to $300 against the income tax, but it is restricted by age or dependents and needs a property tax bill to compute. It also runs an earned income credit worth 40% of the federal EITC, which needs a family situation this calculator does not ask about. If either applies to you, your bill is lower than shown.

The rates and tables here are from Form CT-1040ES (Rev. 01/26), whose schedules are headed “for 2026 Taxable Year”, and they match the withholding calculation rules effective January 1, 2026. Connecticut does not index any of it for inflation, and the Department of Revenue Services lists no income tax change for 2026.

Questions people ask

What are the Connecticut income tax rates for 2026?

Seven bands. For a single filer, 2% on the first $10,000 of Connecticut taxable income, then 4.5% to $50,000, 5.5% to $100,000, 6% to $200,000, 6.5% to $250,000, 6.9% to $500,000 and 6.99% above. Filing jointly every threshold is exactly doubled. The rates alone do not give your bill — see the add-back and recapture below.

What is the Connecticut 2% phase-out add-back?

A flat charge added to your tax that takes back the benefit of the lowest band. It starts above $56,500 of Connecticut AGI for a single filer and rises $25 for each $5,000 of income, stopping at $250 — which is exactly 2.5 percentage points on the $10,000 the 2% band covers. Filing jointly it starts at $100,500 and stops at $500.

What is the Connecticut tax recapture?

A second and much larger addition, which claws back the lower bands at higher incomes. For a single filer it begins above $105,000 and climbs in steps to $3,400; filing jointly it begins above $210,000 and climbs to $6,800. At a $250,000 salary the recapture alone is $1,150, about 7.5% of the whole Connecticut bill.

What can I deduct in Connecticut?

Nothing, in the usual sense. Connecticut has no standard deduction and no itemized deductions — it starts from your federal adjusted gross income, before the federal standard deduction is applied. The only allowance is a personal exemption of $15,000 for a single filer or $24,000 filing jointly, and it is withdrawn as income rises.

At what income does the Connecticut personal exemption disappear?

$44,000 for a single filer and $71,000 filing jointly. It falls by $1,000 for every $1,000 of Connecticut AGI above $30,000 ($48,000 joint), and the statute counts a fraction of $1,000 as a whole one — so a single dollar over a step line costs the entire $1,000.

What is the Connecticut personal tax credit?

A credit expressed as a percentage of your tax rather than a sum of money. It starts at 75% and falls in steps as income rises, reaching nil above $64,500 for a single filer and $100,500 filing jointly. Because it is a percentage, it is taken after the add-back and recapture have been added, not before.

Does any Connecticut town charge a local income tax?

No. No Connecticut municipality levies an income tax, so where you live in the state does not change your income tax bill. Connecticut towns raise their local revenue through property tax instead, and the rates vary sharply — but none of it touches your payslip.

Does Connecticut take anything for paid leave?

Yes, 0.5% of your wages, and the employee pays all of it — there is no employer share. It is capped at the Social Security wage base, so it stops at $922.50 for 2026. On a $75,000 salary it is $375, and it is included in the figures on this page.

Is my data sent anywhere?

No. The calculation runs entirely in your browser. There is no account, and the salary you type is never sent to a server or stored. It never leaves your device.