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HEAD-TO-HEAD TAX COMPARISON · 2026

COUNTRY A Massachusetts VS COUNTRY B Connecticut

Side-by-side analysis of income tax, effective rates, and take-home pay for Massachusetts and Connecticut in 2026.

Daniel · CountryTaxCalc Updated May 2026 Tax Comparison 2026
Calculate your take-home → See all comparisons →
OVERVIEW
Massachusetts and Connecticut represent a nuanced tax comparison that flips depending on income. Massachusetts’ 5% flat rate beats Connecticut’s progressive brackets up to around $103,000, but above that Connecticut’s progressive brackets pull ahead of Massachusetts through most higher incomes — until Massachusetts’ 4% millionaire surtax (9% combined, on income above $1,107,750) pushes Massachusetts higher again above roughly $2 million, where Connecticut becomes cheaper once more. Estate tax is a critical differentiator: Massachusetts has a severe $2 million exemption cliff with no portability, while Connecticut conforms to the federal $13.6 million exemption.
Section 01

The Big Picture

Top-line rates and effective take-home for a typical earner — including income tax, social contributions, and applicable surcharges.

🦞
COUNTRY A
Massachusetts
TAX RATE
5%
Flat (9% on $1M+)

5% flat income tax; 4% Millionaire Tax surtax on income above $1M = 9% combined

âš“
COUNTRY B
Connecticut
TAX RATE
3-6.99%
7 Progressive Brackets

Progressive 3-6.99% across 7 brackets; cheaper than MA above roughly $140K

TYPICAL ANNUAL DIFFERENCE
Moving from Connecticut → Massachusetts at $100,000
$30

That's $3/month back in your pocket

Section 02

Tax Savings by Income Level

Net take-home after all income tax, social contributions, and surcharges — for a single employee with no dependents.

GROSS INCOME
🦞 MA TAX
âš“ CT TAX
SAVINGS
10-YEAR
$50,000
$2,280
$2,000
$280 (CT cheaper)
$2,800
$75,000
$3,530
$3,375
$155 (CT cheaper)
$1,550
$100,000
$4,780
$4,750
$30 (CT cheaper)
$300
$150,000
$7,280
$7,750
$470 (MA cheaper)
$4,700
$250,000
$12,280
$14,000
$1,720 (MA cheaper)
$17,200
$500,000
$24,780
$31,250
$6,470 (MA cheaper)
$64,700
💡

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🦞

Massachusetts Pros & Cons

+ PROS
  • Lower effective rate on incomes below $103K (5% flat vs CT’s progressive brackets)
  • No local income tax in Massachusetts
  • 6.25% sales tax (slightly lower than CT’s 6.35%)
  • Strong tech and biotech job market (Boston/Cambridge)
− CONS
  • Millionaire Tax surtax of 4% on income above $1M (total 9% — highest in New England)
  • Estate tax on estates above $2M with no portability — a severe cliff for married couples
  • High cost of living especially Greater Boston
  • Property tax averages 1.14% — lower than CT but higher than national average
âš“

Connecticut Pros & Cons

+ PROS
  • Lower effective rate for incomes above ~$103K (max 6.99% vs MA’s 5% or 9%)
  • Estate tax exemption of $13.6M (conforms to federal) vs MA’s $2M cliff
  • No Millionaire Tax surtax
  • Generally lower housing costs than Greater Boston
− CONS
  • Progressive brackets make CT more expensive below ~$103K
  • Property tax averages 1.79% — significantly higher than MA’s 1.14%
  • Sales tax 6.35% (marginally higher than MA)
  • Higher cost of living in Fairfield County (NYC suburbs)
FAQ

Frequently Asked Questions

Is Massachusetts or Connecticut cheaper for income tax?

It depends on your income. Massachusetts’ 5% flat rate is cheaper up to roughly $103,000. Above that level, Connecticut’s progressive brackets are lower than Massachusetts’ flat 5% through most higher incomes. Massachusetts’ 4% Millionaire Tax surtax (9% combined, on income above $1,107,750) then pushes Massachusetts higher again — but Massachusetts actually stays cheaper than Connecticut even with the surtax until roughly $2 million, at which point Connecticut becomes the cheaper state once more.

What is Massachusetts’ Millionaire Tax and how does it work?

Massachusetts voters passed a constitutional amendment in 2022 adding a 4% surtax on annual income above $1,000,000. This is applied on top of the standard 5% flat rate, creating a 9% combined rate on income above that threshold. The threshold is not indexed to inflation as of 2026. Connecticut has no equivalent surtax, capping out at 6.99%.

How do the estate taxes compare between Massachusetts and Connecticut?

Massachusetts has a state estate tax on estates above $2 million (as of 2026), with rates up to 16%. Critically, there is no portability between spouses under state law, so a married couple only gets one $2M exemption unless careful planning is done. Connecticut conforms to the federal estate tax exemption of $13.6 million per person (fully portable), making it far more favourable for wealthy families.

Which state has higher property taxes — Massachusetts or Connecticut?

Connecticut has significantly higher property taxes. The average effective rate in Connecticut is approximately 1.79% compared to Massachusetts’ 1.14%. On a $500,000 home, Connecticut costs about $8,950/year vs Massachusetts’ $5,700/year. This property tax difference partially offsets Connecticut’s income tax advantage for mid-to-high earners who own homes.
From the brief
NL27%new 2027 rate, down from 30%
DK65.4kkr/mo threshold, cut from 78k
MT1940snon-dom regime unchanged since
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