RANKING ·
Highest net interest margin in New Hampshire
16 of 17 banks in New Hampshire that filed for the quarter ended June 30, 2026 are ranked. At least $100 million in total assets. Institutions with equal values share a rank. Source: FDIC quarterly financial data.
| Rank | Institution | Headquarters | Net interest margin | Total assets |
|---|---|---|---|---|
| 1 | Savings Bank of Walpole | Walpole, NH | 4.15% | $858 million |
| 2 | Bank of New England | Salem, NH | 4.09% | $1.8 billion |
| 3 | Primary Bank | Bedford, NH | 4.08% | $770 million |
| 4 | Walden Mutual Bank | Concord, NH | 3.91% | $193 million |
| 5 | Sugar River Bank | Newport, NH | 3.75% | $424 million |
| 6 | Franklin Savings Bank | Franklin, NH | 3.41% | $931 million |
| 7 | Bank of New Hampshire | Laconia, NH | 3.40% | $2.8 billion |
| 8 | Merrimack County Savings Bank | Concord, NH | 3.39% | $1.4 billion |
| 9 | Meredith Village Savings Bank | Meredith, NH | 3.31% | $1.6 billion |
| 10 | Mascoma Bank | Lebanon, NH | 3.29% | $3.0 billion |
| 11 | Profile Bank | Rochester, NH | 3.10% | $317 million |
| 12 | Claremont Savings Bank | Claremont, NH | 3.10% | $620 million |
| 13 | The Millyard Bank | Nashua, NH | 3.08% | $333 million |
| 14 | First Seacoast Bank | Dover, NH | 2.65% | $576 million |
| 15 | Salem Co-Operative Bank | Salem, NH | 2.45% | $580 million |
| 16 | Piscataqua Savings Bank | Portsmouth, NH | 1.81% | $373 million |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings