Earnings · Q2 2026 call reports
Credit union net interest margin (NIM)
Annualized net interest income divided by average assets. The median across all 4,299 credit unions reporting it was 3.75% for the quarter ended June 30, 2026. Among those with $100 million or more in assets, the middle half ran from 3.19% to 4.00% (median 3.62%).
Why it matters
Net interest margin shows how much a credit union earns from lending and investing after paying members on their deposits. It is the engine of credit union income.
How it is calculated
Net interest income (interest income less interest expense), annualized, divided by average assets. Year-to-date amounts are annualized (times 12 over the months elapsed), and average balances are the mean of this quarter and the prior December, as in NCUA's Financial Performance Report.
NCUA 5300 call report accounts: ACCT_IS0010 (net interest income) · ACCT_115 (total interest income) · ACCT_350 (total interest expense) · ACCT_010 (total assets). Methodology
How credit unions are spread
By NCUA peer group
| Assets | Count | 25th pct | Median | 75th pct |
|---|---|---|---|---|
| Under $2 million in assets | 232 | 2.92% | 3.78% | 4.84% |
| $2 million to $10 million | 539 | 3.32% | 4.15% | 4.87% |
| $10 million to $50 million | 1,135 | 3.34% | 3.93% | 4.44% |
| $50 million to $100 million | 573 | 3.29% | 3.75% | 4.19% |
| $100 million to $500 million | 1,061 | 3.30% | 3.72% | 4.13% |
| $500 million and up | 759 | 3.07% | 3.47% | 3.82% |
Highest net interest margin
Credit unions with $100 million or more in assets.
- Natco Credit Union Richmond, IN 6.70%
- Urw Community Federal Credit Union Danville, VA 6.06%
- First Alliance Credit Union Rochester, MN 5.96%
- Pelican Credit Union Baton Rouge, LA 5.78%
- Healthcare Employees Federal Credit Union Princeton, NJ 5.73%
- Alltru Federal Credit Union Wentzville, MO 5.72%
- Community First Federal Credit Union Lakeview, MI 5.68%
- Trius Federal Credit Union Kearney, NE 5.66%
- Northridge Community Credit Union Virginia, MN 5.65%
- Centuryfirst Federal Credit Union Hattiesburg, MS 5.62%
Lowest net interest margin
- State Farm Federal Credit Union Bloomington, IL 0.70%
- Caltech Employees Federal Credit Union La Canada, CA 1.06%
- Star One Credit Union Sunnyvale, CA 1.07%
- Merck Employees Federal Credit Union Rahway, NJ 1.13%
- Connecticut State Employees Credit Union Hartford, CT 1.13%
- Lafayette Federal Credit Union Rockville, MD 1.27%
- Southern Energy Credit Union Birmingham, AL 1.27%
- San Joaquin Power Employees Credit Union Fresno, CA 1.53%
- San Diego Firefighters Federal Credit Union San Diego, CA 1.56%
- F & A Federal Credit Union Monterey Park, CA 1.58%
Median by state
Credit unions headquartered in each state, with $100 million or more in assets; states with at least three.
| State | Median | Count |
|---|---|---|
| Puerto Rico | 4.82% | 3 |
| Mississippi | 4.49% | 13 |
| Alaska | 4.46% | 7 |
| Vermont | 4.20% | 7 |
| Missouri | 4.17% | 29 |
| Nebraska | 4.08% | 16 |
| Oregon | 3.99% | 29 |
| Arizona | 3.92% | 21 |
| Kansas | 3.87% | 19 |
| Wyoming | 3.85% | 11 |
| Iowa | 3.85% | 29 |
| South Dakota | 3.85% | 12 |
| New Jersey | 3.84% | 29 |
| South Carolina | 3.83% | 22 |
| Louisiana | 3.79% | 29 |
| Michigan | 3.78% | 113 |
| New Mexico | 3.77% | 16 |
| West Virginia | 3.76% | 11 |
| Washington | 3.73% | 40 |
| Indiana | 3.70% | 44 |
| North Carolina | 3.69% | 26 |
| Illinois | 3.67% | 53 |
| Connecticut | 3.65% | 21 |
| Maine | 3.64% | 40 |
| Ohio | 3.64% | 77 |
| Texas | 3.62% | 141 |
| Florida | 3.61% | 72 |
| Pennsylvania | 3.61% | 86 |
| Virginia | 3.60% | 46 |
| Tennessee | 3.59% | 41 |
| Montana | 3.59% | 17 |
| Maryland | 3.59% | 34 |
| Wisconsin | 3.58% | 49 |
| Georgia | 3.56% | 30 |
| New York | 3.56% | 91 |
| Oklahoma | 3.55% | 27 |
| Minnesota | 3.54% | 43 |
| Idaho | 3.53% | 17 |
| North Dakota | 3.53% | 12 |
| Alabama | 3.49% | 36 |
| Colorado | 3.44% | 37 |
| Kentucky | 3.43% | 17 |
| Utah | 3.42% | 22 |
| Nevada | 3.42% | 11 |
| Delaware | 3.40% | 6 |
| New Hampshire | 3.39% | 9 |
| California | 3.34% | 150 |
| Arkansas | 3.29% | 5 |
| Rhode Island | 3.11% | 8 |
| District of Columbia | 3.02% | 11 |
| Massachusetts | 2.99% | 58 |
| Hawaii | 2.93% | 25 |
Source: NCUA 5300 Call Report quarterly data, Q2 2026. Not affiliated with NCUA. Every credit union's figure is on its own page, in the screener, and in the free API.
Questions people ask
What is the average credit union net interest margin?
The median across 4,299 credit unions was 3.75% in the Q2 2026 call reports. Among credit unions with $100 million or more in assets, the middle half ran from 3.19% to 4.00%.
Is a higher net interest margin better?
Not necessarily. Net interest margin describes how a credit union is run rather than how well, so it is best read against credit unions of the same size and business mix.
How is net interest margin calculated?
Net interest income (interest income less interest expense), annualized, divided by average assets. Year-to-date amounts are annualized (times 12 over the months elapsed), and average balances are the mean of this quarter and the prior December, as in NCUA's Financial Performance Report. Source accounts on NCUA's 5300 call report: ACCT_IS0010 (net interest income); ACCT_115 (total interest income); ACCT_350 (total interest expense); ACCT_010 (total assets).
Which credit union has the highest net interest margin?
Natco Credit Union of Richmond, IN, at 6.70% in Q2 2026, among credit unions with $100 million or more in assets.