Does Connecticut have a state income tax?

Yes. Connecticut has a state income tax with a top rate of 7.0%.

How much is Connecticut state tax on a $100,000 salary?

On a $100,000 salary in Connecticut, state income tax is approximately $3,865. Your estimated total take-home pay is $75,316/year.

What other taxes does Connecticut have?

Connecticut has a 6.35% state sales tax (plus higher rates on certain luxury goods). Property taxes are among the highest in the nation — averaging 1.6–2.0% of assessed value. Connecticut also has an estate tax with a $13.61 million exemption and rates up to 12%.

How does Connecticut compare to other states for taxes?

Connecticut's top rate of 7.0% compares unfavorably — above the national median for state income taxes.

What are Connecticut's income tax rates?

Connecticut has 7 tax brackets from 3% (on the first $10,000) up to 6.99% (on income over $500,000 for single filers). Most middle-income earners in Connecticut face an effective state rate of 4–5.5%.

Are property taxes high in Connecticut?

Yes — Connecticut property taxes are among the highest in the US, with effective rates often between 1.6% and 2.0%. On a $500,000 home, that's $8,000–$10,000 per year. Property taxes are levied at the municipal level and vary significantly by town.

How does Connecticut compare to Massachusetts for taxes?

Massachusetts has a flat 5% income tax (plus a 4% surtax on income over $1M), making it simpler but slightly lower for most income levels. Connecticut's progressive structure means it's cheaper than MA for lower earners but more expensive above $100,000. Both states have high property taxes and above-average cost of living.

State Tax Guide

Connecticut State Income Tax Guide (2026)

Connecticut has a progressive income tax ranging from 3% to 6.99% — one of the higher-tax states in the Northeast, with significant local property taxes as well.

Top State Rate

7.0%

$100k Take-Home

$75,316

/year (single)

State Tax on $100k

$3,865

single filer

Connecticut Income Tax Brackets (2026)

Marginal Rate	Taxable Income (Single Filer)
3%	$0→$10,000
5%	$10,000→$50,000
5.5%	$50,000→$100,000
6%	$100,000→$200,000
6.5%	$200,000→$250,000
6.9%	$250,000→$500,000
6.99%	$500,000→Above $500,000

Each rate applies only to income within that bracket. Your effective rate is the average across all brackets — meaningfully lower than your top marginal rate.

Brackets reflect the most recently published schedules. Some states inflation-index thresholds annually — specific 2026 amounts may shift slightly. Verify with your state's Department of Revenue before filing.

$100,000 Salary in Connecticut — Full Tax Breakdown

Category	Annual	Monthly
Gross Salary	$100,000	$8,333
Federal Tax	−$13,170	−$1,098
FICA (SS + Medicare)	−$0.00	−$0.00
Connecticut State Tax	−$3,865	−$322
Take-Home Pay	$75,316	$6,276

Assumes single filing status, standard deduction, no 401(k) or HSA contributions. 2026 tax year.

Run your numbers through the right calculator

Salaried, freelance, bonus, overtime, or tips — pick the tool that matches your event.

Salary Calculator

Annual gross to take-home: federal + state + FICA + 401(k)/HSA modeling for all 50 states.

Calculate take-home

Overtime Calculator

Apply the 2025 OBBBA 'No Tax on Overtime' deduction (up to $12,500) and see real savings.

Calculate OT take-home

1099 Tax Calculator

1099, sole prop, or LLC: self-employment tax (15.3%) plus quarterly estimates.

Calculate SE tax

Bonus Calculator

Year-end, sign-on, retention, or commission. Compare flat 22% vs aggregate withholding.

Calculate bonus

The 30-second version

1.Connecticut has 7 progressive brackets: 3% to 6.99%. Most professionals are in the 5.5%–6.5% range. The top 6.99% kicks in at $500K of single taxable income — moderate by Northeast standards (lower than NY's 10.9%, NJ's 10.75%, MA surtax bands).
2.Greenwich/Stamford/Darien finance commuter wealth is a major audience — many CT residents work in NYC. NY taxes the wages first; CT credits NY tax paid. Net CT residual is small for commuters (similar to NJ commuter dynamic).
3.Property tax is the actual CT pain — averaging ~2.0% effective, second only to NJ. Fairfield County (Greenwich, Westport, Darien, New Canaan) runs even higher in some districts. A $1M Greenwich home routinely pays $20–25K/year.
4.Estate tax: $13.61M exemption (matched to federal in recent reforms — much friendlier than the prior $2.6M figure). Real CT improvement for HNW residents.
5.Mansion tax on real estate sales above $2.5M (1% surcharge). Conveyance taxes also stack at the municipal level.

Why you can trust these numbers

Numbers reflect 2026 IRS federal brackets, FICA caps, and current Connecticut Department of Revenue Services progressive brackets. The calculator at the top reflects this directly. CT doesn't allow the standard deduction in the conventional sense (uses an income-tested personal exemption instead), so the calculator may slightly under-state your CT bill — typically by $200–$400.

Sources: federal brackets + standard deduction from IRS Rev. Proc. 2025-32; state brackets verified against the Tax Foundation 2026 State Income Tax Rates compilation and the official CT-1040 Individual Income Tax Forms (CT Department of Revenue Services).

The brackets — and the NYC commuter dynamic

Connecticut's progressive structure caps at 6.99% — moderate by Northeast standards. The 5.5% bracket runs from $50K to $100K; 6% from $100K to $200K; 6.5% from $200K to $250K; 6.9% from $250K to $500K; 6.99% above. So most CT residents face a 5.5–6.5% effective rate. Standard deduction doesn't exist in CT — the personal exemption (income-tested, $24,000 phase-out for single filers) provides the equivalent benefit.

Greenwich/Stamford/Westport/Darien residents working in NYC are the largest cross-border commuter group on the I-95 corridor. NY taxes their NYC wages first (~6–10% NY non-resident rate depending on income); CT credits the NY tax paid (capped at the CT tax that would have applied). Net CT residual is small. Critically: NYC city tax doesn't apply to non-residents, so CT-NYC commuters save the ~3.4% NYC tax that Manhattan residents pay. This is a real $5K–$15K/year advantage at most professional income levels.

What you'll actually pay — two real-life scenarios

Two scenarios to anchor the math, including the NYC commuter case.

Illustrative — single filer unless noted, federal standard deduction, full-year CT residency, W-2 income unless specified. Two-earner MFJ households pay more FICA than the calculator shows. Ballparks, not invoices.

Scenario 1: Hartford insurance professional, $145,000

Federal income tax	~$24,050
Connecticut income tax	~$6,850
FICA (Social Security + Medicare)	~$11,100
Total income taxes	~$42,000
Annual take-home	~$103,000
Effective CT tax rate	~4.7%

Hartford insurance / financial services professional — The Hartford, Travelers, Aetna (CVS Health), Cigna, MassMutual. Same comp in Boston: ~$7,000 MA tax — comparable. Same in Manhattan: ~$8,400 NY + ~$5,000 NYC = $13,400. Hartford's CT-only $6,850 is meaningfully lighter than NYC's combined burden, and Hartford housing is dramatically cheaper than NYC.

Scenario 2: Greenwich finance professional commuting to NYC, $300,000 (MFJ)

Federal income tax	~$50,500
NY non-resident income tax (NY-source wages)	~$15,800
NYC city income tax	$0 (non-resident)
CT residual income tax (after NY credit)	~$1,500
FICA (two earners + Additional Medicare)	~$23,400
Total income taxes	~$91,200
Annual take-home (pre-housing)	~$208,800
Effective combined state rate	~5.8%

Classic Greenwich / Westport / Darien finance commuter family — both spouses or one with a high-comp role at a Manhattan hedge fund, IB, or private equity firm. The same family living in Manhattan: ~$15,800 NY + ~$10,250 NYC = $26,050 combined state-and-local tax. Greenwich saves the $10,250 NYC city tax — about $10K/year of pure tax savings, plus a meaningfully better standard of living (yard, beach access, top-ranked public schools). The trade-off: $25K+/year property tax on a $1.5M Greenwich home.

Property tax — the actual CT cost

CT property tax effective rates by town (approximate — CT has 169 municipalities, all set their own rates): Greenwich 0.6–0.8% (lowest among Fairfield), Westport 1.1–1.4%, Darien 0.85–1.10%, New Canaan 0.85–1.05%, Stamford 1.2–1.5%, Norwalk 1.4–1.7%, Bridgeport 2.5–3.0%, Hartford 2.4–3.0% (highest), New Haven 2.0–2.5%, Suburban Hartford 1.6–2.2%. Statewide average ~2.0% — second only to NJ. Bridgeport and Hartford are among the highest in the country (urban areas with weaker tax bases).

Greenwich is the famous outlier — its effective rate is unusually low because its grand list (taxable property value) is exceptionally large per resident. Other Fairfield County towns have higher effective rates. The Greenwich tax cost is meaningful in absolute dollars (a $5M home pays $35K+) but the effective rate looks favorable.

Mansion tax surcharge: CT levies a 1% conveyance tax surcharge on residential real estate sales above $2.5M. Plus standard state conveyance tax of 0.75–1.25%, plus municipal conveyance tax. Selling a $5M Greenwich home: $50,000+ in transfer taxes alone.

Things financially comfortable Connecticut residents actually do

Max your 401(k) ($24,500 in 2026) — pre-tax for federal AND CT.
Max your HSA if eligible — pre-tax for federal AND CT.
Backdoor Roth IRA — fully legal.
Mega backdoor Roth if your employer's 401(k) plan allows.
CHET (Connecticut Higher Education Trust 529) — CT offers a state-tax deduction up to $5,000 single / $10,000 MFJ for contributions to CHET. At CT's 5.5–6.5% bracket, that's ~$275–$650 per year per filer in CT tax saved.
Property tax credit — up to $200 credit on income tax for property taxes paid (income-tested phase-out).
If you're a NYC commuter — verify the NY-CT credit is correctly calculated on your CT return. NY collects first; CT credits NY tax paid (capped at the CT tax on the same income). Many self-prepared returns miss credits or miscalculate.
Pension/SS subtraction — for ages 65+ with qualifying income, CT allows full SS subtraction (income-tested) and a graduated pension subtraction. Recent reforms have made CT meaningfully more retirement-friendly than in 2018.
Historic preservation tax credits — CT has substantial historic property and small-business credits worth exploring for owners of qualifying property.

Real questions people actually ask

Q: I live in Greenwich and work in Manhattan. What do I file?

Both NY and CT returns. NY collects first via your W-4 / IT-2104 withholding (NY non-resident return Form IT-203). CT credits the NY tax paid on the same income, so your CT residual is usually small. NYC city tax doesn't apply (non-resident). Net effect: you mostly pay NY's rate, save the NYC city tax, and CT's residual is the difference (often near zero for typical comp). The setup is well-established and clean if filed correctly.

Q: Did Connecticut really raise its estate tax exemption?

Yes. CT used to have one of the lowest estate tax exemptions in the country ($2.6M in 2017). Through staged reforms (2018, 2019, 2020), the exemption was raised to match the federal exemption ($13.61M for 2024, scheduled to halve in 2026 unless Congress acts). This was a significant HNW improvement. Above the exemption, CT estate tax rates are 10.4–12% on a graduated scale.

Q: Why is Greenwich property tax so low?

Greenwich has an exceptionally large grand list (taxable property value) per resident — many high-value commercial properties, hedge fund offices, and trophy estates. Spreading the town budget across that large base produces a low effective rate. So a $5M Greenwich home pays roughly $35K/year in property tax — significant in absolute dollars, but the effective rate (~0.7%) is among the lowest of any wealthy Northeast suburb. Other Fairfield County towns have higher effective rates because their grand lists are smaller relative to their budgets.

Q: Does CT tax retirement income?

Less than it used to. SS exempt for filers under specified income tiers (single under $75K AGI, MFJ under $100K AGI — fully exempt; phased above). Pension exemption gradually being expanded — by 2026, eligible filers 62+ may exempt up to $20,000–$50,000 of pension/IRA income depending on income tier. The 2019–2024 reforms made CT meaningfully more retirement-friendly than its prior reputation. Worth re-running the math if you previously decided CT was unfavorable for retirement.

Our honest opinion (which is just an opinion)

Connecticut is a moderate-to-high tax state, but the actual financial story is dominated by property tax (#2 in the nation behind NJ) and the NYC-commuter advantage for Fairfield County professionals. The income tax itself is competitive within the Northeast — meaningfully cheaper than NY+NYC combined or NJ at most income levels.

The case for Connecticut:

Top 6.99% rate moderate by Northeast standards (vs NY 10.9%, NJ 10.75%)
NYC commuter advantage — save NYC city tax via Fairfield County living
Estate tax exemption matched to federal ($13.61M) — major HNW improvement vs pre-2018
Recently expanded SS and pension exemptions for retirees
Strong public schools in Fairfield County and many CT suburbs
Coast access, mid-Atlantic + NE proximity

The case against:

Property tax #2 in the nation (~2.0%)
Hartford and Bridgeport effective rates among the highest in the country
Standard deduction doesn't exist (uses income-tested personal exemption)
Mansion tax + conveyance taxes stack on real estate sales
Cost of living in Fairfield County is comparable to NYC

Honest take: if you're a NYC-commuting Fairfield County professional, CT is the right financial answer for most income levels — you save NYC city tax and CT's residual is small. If you're a Hartford-area worker, the income tax is moderate but the property tax is among the worst in the country. For HNW retirees: CT is meaningfully friendlier in 2026 than during the pre-reform era. Worth re-running the numbers if you previously decided CT was unfavorable.

What now

Run your numbers in the calculator above. If you're a NYC commuter, the calculator over-states your CT bill (it doesn't model the NY credit) — your actual CT residual is small. Add property tax for your specific town (CT town tax mill rates are publicly searchable). Apply for the CT property tax credit if eligible. The biggest tax mistake most CT residents make isn't paying too much state income tax — it's missing the property tax credit or failing to optimize the NY-CT commuter credit calculation.

Sources & further reading

A few honest notes

Not personal tax, legal, or financial advice. Verify with a licensed CPA, EA, or tax attorney before making meaningful decisions.
Tax law changes. This guide reflects 2026 IRS schedules and current CT DRS rules. Pension/SS exemption thresholds adjust annually.
Property tax mill rates vary by town — check your town's published mill rate.
The numbers are illustrative — scenarios don't include every credit, deduction, or wrinkle that might apply to you.
The calculator at the top doesn't model the NY-CT commuter credit dynamic — for NYC commuters, your actual CT residual will be much smaller than shown.
No client relationship is created by reading this page.

Last updated April 2026 with 2026 IRS schedules and current CT DRS guidance.