Taxes in Greenwich
Greenwich's tax picture combines Connecticut's real, current 6.99% top graduated income tax -- applied uniformly regardless of local wealth -- with the town's own genuinely low property-tax mill rate, a flat 6.35% state sales tax, and a real, tiered conveyance tax directly relevant to Greenwich's own high-value real estate.
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Learn moreConnecticut's Real, Graduated Income Tax Tops Out at 6.99%
Connecticut's 2026 graduated income tax runs seven brackets for a single filer: 2% on the first $10,000, rising through 4.5%, 5.5%, 6%, 6.5%, and 6.9%, up to 6.99% on income above $500,000 ($1,000,000 for married filing jointly). This same statewide schedule applies to every Greenwich resident -- Connecticut levies no local income tax anywhere in the state.
Property Tax Runs a Real, Counterintuitively Low Rate -- See the Dedicated Property-Taxes Page
As detailed in full on the property-taxes topic page, Greenwich's 2025-2026 mill rate of 12.041 yields a mill-rate-derived effective rate near 0.84% of market value, genuinely low relative to Connecticut's poorer core cities -- though the dollar bill on a high-value Greenwich home still runs substantial.
Connecticut's Flat 6.35% Sales Tax, With a Higher Rate on Certain Luxury Goods
Connecticut's statewide sales tax runs a flat 6.35% with no local-option add-on anywhere in the state, though certain luxury goods (motor vehicles over $50,000, jewelry over $5,000) carry a higher 7.75% rate -- a real, genuinely relevant fact given Greenwich's own upscale retail and luxury-vehicle market.
A Real, Tiered Conveyance Tax on Real Estate Sales
Connecticut's state conveyance tax runs 0.75% up to $800,000, 1.25% from $800,000-$2,500,000, and 2.25% above $2,500,000, plus a separate municipal add-on of 0.25%-0.5% -- directly relevant given Greenwich's own high typical home values, which often reach or exceed the top bracket.
Connecticut's Real $15 Million (2026) Estate Tax Exemption
Connecticut levies a state estate tax with a 2026 exemption threshold of $15 million per estate, matching the current federal exemption -- a real, genuinely relevant fact given Greenwich's concentrated high-net-worth population, though this record discloses it as informational context rather than individualized estate-planning advice.
Key takeaways
- Connecticut's graduated income tax tops out at a real, current 6.99% on income above $500,000 (single) / $1,000,000 (joint) -- applied uniformly to every Greenwich resident.
- Connecticut levies no local income tax anywhere in the state -- the graduated state rate is the whole income-tax story for a Greenwich resident.
- Greenwich's own mill rate (12.041) yields a mill-rate-derived effective property tax rate near 0.84%, genuinely low relative to Connecticut's core cities.
- Connecticut's flat 6.35% sales tax carries no local add-on, though certain luxury goods carry a higher 7.75% rate.
- Connecticut's real, tiered conveyance tax reaches 2.25% above $2.5 million -- directly relevant to a Greenwich-scale home sale.
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