RANKING ·
Largest net interest margin improvement in New Hampshire
9 of 12 credit unions in New Hampshire that filed for the quarter ended June 30, 2026 are ranked. At least $100 million in total assets and a comparable quarter a year earlier. Institutions with equal values share a rank. Source: NCUA Call Report data.
| Rank | Institution | Headquarters | Net interest margin, change over 12 months | Total assets |
|---|---|---|---|---|
| 1 | New Hampshire Federal Credit Union | Concord, NH | +79 bps | $332 million |
| 2 | Service Federal Credit Union | Portsmouth, NH | +25 bps | $6.7 billion |
| 3 | Granite State Credit Union | Manchester, NH | +20 bps | $749 million |
| 4 | Triangle Credit Union | Nashua, NH | +20 bps | $866 million |
| 5 | St. Mary'S Bank Credit Union | Manchester, NH | +17 bps | $1.8 billion |
| 6 | Holy Rosary Credit Union | Rochester, NH | +12 bps | $508 million |
| 7 | Members First Credit Union of N.H. | Manchester, NH | +9 bps | $277 million |
| 8 | Bellwether Community Credit Union | Manchester, NH | +7 bps | $675 million |
| 9 | Lighthouse Federal Credit Union | Dover, NH | -10 bps | $2.2 billion |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings