New Hampshire property tax deadlines
3 sourced dates. 10 of 10 New Hampshire counties have at least one.
In New Hampshire, each town or city bills and collects property tax, usually twice a year, and prints its own due dates on the bill. Counties don't collect it. The abatement deadline depends on the date of your final tax bill, so keep that date handy. After the town decides, you can go to the Board of Tax and Land Appeals or superior court.
Next dates in every New Hampshire county
| County | Bills due | Last day without penalty | Appeal by | Exemption filing |
|---|---|---|---|---|
| Belknap County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Carroll County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Cheshire County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Coos County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Grafton County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Hillsborough County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Merrimack County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Rockingham County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Strafford County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
| Sullivan County, NH | Not on file | Not on file | Mar 1, 2027btla.nh.govOct 21 | Apr 15, 2027btla.nh.govOct 21 |
Every state-wide date
| Date and source | Deadline | Applies to |
|---|---|---|
| March 1 every yearbtla.nh.govOct 21 | Appeal deadline Ask your town for an abatement | All 10 New Hampshire counties |
| April 15 every yearbtla.nh.govOct 21 | Exemption filing Apply for exemptions and tax credits | All 10 New Hampshire counties |
| September 1 every yearbtla.nh.govOct 21 | Appeal deadline Appeal to the state tax board | All 10 New Hampshire counties |