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 April 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 $140,000, but at higher incomes Connecticut’s maximum rate of 6.99% undercuts Massachusetts significantly — and the gap w…
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
⚓
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
$301
That's $25/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
⚓ CT TAX
SAVINGS
10-YEAR
$50,000
$2,500
$2,013
$487 (CT cheaper)
$4,870
$75,000
$3,750
$3,181
$569 (CT cheaper)
$5,690
$100,000
$5,000
$4,699
$301 (MA cheaper)
$3,010
$150,000
$7,500
$8,249
$749 (MA cheaper)
$7,490
$250,000
$12,500
$16,849
$4,349 (MA cheaper)
$43,490
$500,000
$25,000
$34,449
$9,449 (MA cheaper)
$94,490
💡

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🦞

Massachusetts Pros & Cons

+ PROS
  • Lower effective rate on incomes below $140K (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
⚓

Connecticut Pros & Cons

+ PROS
  • Lower effective rate for incomes above ~$140K (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 ~$100K
  • 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 $140,000. Above that level, Connecticut’s top rate of 6.99% is lower than Massachusetts, and for incomes above $1 million, Connecticut is far cheaper because Massachusetts adds a 4% Millionaire Tax surtax (9% combined) while Connecticut stays at 6.99%.

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.