Taxes & Insurance in Chatham

Chatham carries the lowest property tax rate of any Cape Cod town, Massachusetts's own statewide flat income tax and simple sales tax, and genuinely elevated homeowners- and flood-insurance costs tied to its real coastal-erosion exposure.

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The lowest property tax rate on Cape Cod, yet still a real, substantial bill

Chatham's FY2026 rate ($3.67/$1,000, ~0.37% effective) is the lowest residential rate of any town on Cape Cod, per the Town of Chatham's own certified tax-rate disclosure -- yet on the town's substantial average home value (~$1,346,917), the resulting bill still comes to a real, computed estimate of approximately $4,943/year.

Massachusetts's statewide flat income tax and surtax apply here as everywhere

Massachusetts's real flat 5% state income tax (with the additional 4% surtax on taxable income above $1,107,750) and uniform 6.25% sales tax apply in Chatham exactly as they do statewide -- see the state hub record for the full disclosure.

Genuinely elevated homeowners and flood insurance, with a real, active mitigation program

Cape Cod, Islands, and South Shore communities including Chatham pay the highest homeowners-insurance premiums statewide, running a real 29%-68% above the Massachusetts mean. Chatham's participation in FEMA's National Flood Insurance Program Community Rating System as a Class 7 community is a real, active mitigation effort earning residents a 15% flood-insurance discount, alongside the state's own ~$1,078/year statewide flood-insurance average.

Key takeaways

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Last reviewed: 2026-08-25. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.