Security Federal Bank
Elizabethton, TN — State Savings Bank
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Net Interest Margin Over Time
| Net Interest Margin | Security Federal Bank | All Insured Savings Banks in Tennessee |
| 12-31-2016 | 4.173 | 3.241 |
| 09-30-2016 | 4.183 | 3.225 |
| 06-30-2016 | 4.222 | 3.331 |
| 03-31-2016 | 4.273 | 3.356 |
| 12-31-2015 | 4.533 | 3.423 |
| 09-30-2015 | 4.582 | 3.414 |
| 06-30-2015 | 4.701 | 3.511 |
| 03-31-2015 | 4.676 | 3.51 |
| 12-31-2014 | 4.553 | 3.524 |
| 09-30-2014 | 4.526 | 3.519 |
| 06-30-2014 | 4.398 | 3.504 |
| 03-31-2014 | 4.286 | 3.524 |
| 12-31-2013 | 4.82 | 3.667 |
| 09-30-2013 | 5.047 | 3.689 |
| 06-30-2013 | 5.104 | 3.708 |
| 03-31-2013 | 5.11 | 3.727 |
| 12-31-2012 | 5.353 | 3.867 |
| 09-30-2012 | 5.385 | 3.833 |
| 06-30-2012 | 5.403 | 3.859 |
| 03-31-2012 | 5.523 | 3.838 |