Merrimack, NH property taxes and records: how to look up any home
You can look up any Merrimack property's assessment and records online through the town's official tools below. Merrimack's 2025 total property tax rate is $22.11 per $1,000 of assessed value, set by the NH Department of Revenue Administration on October 24, 2025, which works out to about $184 a month for each $100,000 of assessed value.
By Tom MacDonald, Loan Officer · Checked October 30, 2026Elite Mortgage GroupNMLS #2748687Company NMLS #2502308MBR
Where can I look up a Merrimack property's assessment or tax card?
- Property record cards: Avitar Associates' Assessing Database, linked from the town site
- GIS and parcel maps: Town of Merrimack Parcel Viewer
- Tax bills (look up and pay): NH Tax Kiosk for Merrimack
- Assessing office: Town of Merrimack Assessing Department
Records show the assessed value the town uses for the tax bill, the lot, the building details and recent sales. If something on a card looks wrong (square footage, bedrooms, lot size), contact the assessing office.
What is Merrimack's tax rate, and what does it add to a payment?
| 2025, per $1,000 | Merrimack |
|---|---|
| Town | $4.38 |
| County | $1.33 |
| State education | $1.44 |
| Local education | $14.96 |
| Total | $22.11 |
About $2,211 a year, or $184 a month, for each $100,000 of assessed value. On a home assessed at $450,000, that's about $829 a month. Most lenders collect it monthly through escrow.
How close are Merrimack's assessments to market value?
The town's assessing page lists Merrimack's 2025 equalized ratio as 67.9%, meaning 2025 assessments were, on average, below market value. Merrimack then did a town-wide value update for 2026, with the goal of bringing all assessments to 100% of market value as of April 1, so 2026 assessments will look different from 2025's.
When are tax bills due, and how do I pay?
Merrimack bills twice a year. The first bill is mailed at the end of May, is half of the prior year's total tax, and is due July 1. The final bill is mailed at the end of October at the new rate the state sets in the fall, less the first bill, and is due December 1 (or 30 days after mailing if it goes out after October 31). Details: Town of Merrimack Property Taxes.
What if I think my assessment is too high?
You can ask the town for an abatement. In New Hampshire the application is generally due by March 1 after the year's final tax bill. Merrimack's page: abatements.
Are there exemptions or tax credits?
Yes. New Hampshire towns offer credits and exemptions such as the veterans' tax credit, set and administered locally. See Merrimack's list: exemptions and veterans' tax credits.
Buying or refinancing in Merrimack?
Your lender counts property tax in the monthly payment it uses to qualify you, so the home's real assessment matters. Send Tom the address and he'll run the payment with the town's actual assessment and rate. No credit pull to start. Tom MacDonald, Loan Officer, Elite Mortgage Group · NMLS #2748687 · Company NMLS #2502308MBR.
Sources
- NH DRA, 2025 municipal tax rates (Merrimack $22.11 and its four parts, set October 24, 2025): https://www.revenue.nh.gov/sites/g/files/ehbemt736/files/documents/2025-municipal-tax-rates.pdf
- Town of Merrimack Assessing Database (it opens Avitar's assessing kiosk, https://data.avitarassociates.com/logon.aspx): https://www.merrimacknh.gov/811/Assessing-Database
- Town of Merrimack Parcel Viewer (linked from the Assessing Information page; opens https://www.merrimackgis.org/app/)::) https://www.merrimackgis.org/
- NH Tax Kiosk for Merrimack (linked from the town's Property Taxes and Online Payments pages): https://nhtaxkiosk.com/?KIOSKID=MERRIMACK
- Town of Merrimack Assessing Department (tax rate $22.11, equalized ratio 67.9% (2025), 2026 town-wide value update): https://www.merrimacknh.gov/304/Assessing-Department
- Town of Merrimack Assessing Information: https://www.merrimacknh.gov/311/Assessing-Information
- Town of Merrimack Property Taxes (twice-a-year billing, July 1 and December 1 due dates): https://www.merrimacknh.gov/529/Property-Taxes
- Town of Merrimack Online Payments: https://www.merrimacknh.gov/543/Online-Payments
- Merrimack abatements: https://www.merrimacknh.gov/312/Abatement-To-Municipality-RSA-7616 ; exemptions: https://www.merrimacknh.gov/308/Property-Tax-Exemptions ; veterans' tax credits: https://www.merrimacknh.gov/305/Veterans-Tax-Credit ; paying taxes: https://www.merrimacknh.gov/529/Property-Taxes
- NH RSA 76:16, abatement application (generally by March 1): https://gc.nh.gov/rsa/html/V/76/76-16.htm
- NH tax billing (first bill an estimate, final bill at the new rate): the site's guide-nh-property-tax-bills-escrow (NH DRA tax collector manual; RSA 76:15-a)
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