Merrimack NH Property Taxes (2026): Rates, Bills & What Homeowners Pay

Quick answer: Merrimack NH property taxes are billed at a 2025 rate of $22.11 per $1,000 of assessed value — up $1.42 from 2024. Because the town assesses homes at roughly 68% of market value, a house that would sell for about $500,000 is typically assessed near $340,000, producing a real tax bill in the ballpark of $7,500 a year rather than the $11,000 the sticker rate suggests.

If you are buying, selling, or already own in town, understanding how Merrimack NH property taxes actually work — the rate, the four components, the assessment ratio, and the exemptions — is one of the most useful money conversations you can have. Here is the plain-English breakdown from The Phinney Team.

What is the Merrimack property tax rate in 2025?

The Town of Merrimack set its 2025 property tax rate at $22.11 per $1,000 of assessed valuation, an increase of $1.42 per thousand over the 2024 rate of $20.69 — about a 6.9% jump. That number is the combined rate; your bill is built from four separate pieces that each fund a different level of government.

Here is how the 2025 Merrimack NH tax rate breaks down, according to the town's official October 2025 tax-rate press release:

The takeaway most homeowners miss: more than two-thirds of your bill funds local schools. The Town Council only controls the $4.38 municipal slice. When people say "my taxes went up," the driver is almost always the school portion — which rose $1.10 this year and accounts for the bulk of the increase.

How much are property taxes on a home in Merrimack, NH?

Start with your assessed value, not your purchase price. Multiply the assessment by the rate and divide by 1,000. A home assessed at $400,000 owes roughly $400 × $22.11 = $8,844 per year, or about $737 a month set aside.

But assessed value is usually lower than what a home would sell for today. Merrimack's equalization ratio — the state's measure of assessments versus real market value — runs near 68%. So a home that would sell for around $500,000 (Zillow pegs the typical Merrimack home value near $536,000 in 2026, and recent median sale prices have hovered around $497,000) is often assessed closer to $340,000. That produces an actual tax bill near $7,500 a year, or roughly $625 a month.

Put another way, the effective tax rate on a home's true market value in Merrimack is closer to $15 per $1,000 once the assessment ratio is factored in. That is why you can never compare two towns on the sticker rate alone.

How does Merrimack compare to nearby towns?

Merrimack's $22.11 combined rate looks high next to its neighbors, but remember every town assesses at a different ratio, so these are starting points for a conversation, not final verdicts. Approximate 2025 full rates for nearby southern New Hampshire towns:

What often surprises buyers: because Merrimack's assessments run below market and its home prices sit in the mid-$400s to mid-$500s, the annual dollars owed can land close to a "lower-rate" town where homes cost more and assess nearer to full value. We walk clients through the real monthly number on any specific address before they fall in love — or walk away — over a headline rate. If you are weighing towns, our Merrimack real estate hub and buyer resources are the place to start.

When are Merrimack property tax bills due?

Like most New Hampshire municipalities, Merrimack issues property tax bills twice a year. The first bill typically arrives mid-year and is an estimate based on half of the prior year's total; the second, issued after the new rate is set in the fall, trues up the full-year amount. If you have a mortgage, your lender usually escrows and pays these on your behalf — but you are still the one funding the escrow, so the numbers matter.

What property tax exemptions can Merrimack homeowners claim?

New Hampshire and the Town of Merrimack offer several credits and exemptions that can meaningfully lower a bill. The most common include the elderly exemption, the veterans' tax credit, exemptions for the blind and disabled, and a solar energy systems exemption. Each has income, asset, or eligibility rules and application deadlines, so it is worth confirming your status with the town's Assessing Department early in the year rather than after bills post.

Related reading

• Comparing nearby commuter towns? See our Salem NH property taxes guide (2026).
• Deciding if the town fits your life? See Is Merrimack, NH a Good Place to Live? (2026 Guide).
• Comparing to a lower-rate neighbor: Property Taxes in Bedford, NH: A City-by-City Guide.
• Curious about a sister town's numbers? Read Hooksett NH Property Taxes: Rates, Bills & What Homeowners Pay (2026).

Frequently asked questions

What is the 2025 property tax rate in Merrimack, NH?

The 2025 combined rate is $22.11 per $1,000 of assessed value, up from $20.69 in 2024. It splits into School-Local ($14.96), Municipal ($4.38), School-State ($1.44), and Hillsborough County ($1.33).

Why are Merrimack NH property taxes higher than some neighboring towns?

Merrimack's sticker rate is higher, but its equalization ratio (~68%) means assessments run below market value. Once adjusted, the effective rate on true market value is closer to $15 per $1,000, so annual bills are often comparable to lower-rate towns with pricier, fully-assessed homes.

How do I estimate my Merrimack tax bill?

Take your assessed value, multiply by the rate, and divide by 1,000. A $400,000 assessment at $22.11 equals about $8,844 per year. Use your assessed value from the town card, not your purchase price, for an accurate figure.

Do property taxes in Merrimack New Hampshire include a state income or sales tax?

No. New Hampshire has no general sales tax and no wage income tax, so towns lean heavily on property taxes to fund schools and services. That trade-off is a big reason Granite State property tax rates look high compared with other states.

Talk to a local expert

Property taxes should be part of your home-buying math from day one, not a surprise at closing. The Phinney Team at Keller Williams helps buyers and sellers across Merrimack and southern New Hampshire run the real numbers on any address — assessment, effective rate, and monthly impact included. Reach us anytime through teamphinney.com. For the official figures, the Town of Merrimack Assessing Department and the NH Department of Revenue Administration publish current rates and exemption rules.