First National Bank: Yields and Funding Costs
Data as of · Call Report Schedules RI and RC-K How we update
What the bank earns on its assets, what it pays for its funding, and the spread between them. Net interest margin is the output of the two: it is the engine of earnings for almost every commercial bank.
The biggest quarter-over-quarter change on this page was a small one: Total interest expense edged down 0.6% between Q1 2026 and Q2 2026, to $1.6M. Among 56 South Dakota banks, First National Bank sits 3rd from the top on net interest margin, 7.62% as of Q2 2026. First National Bank's net interest margin of 7.62% is well above the 3.94% median for banks in the $100M-1B asset tier, a gap of 3.68 points (Q2 2026).
Asset yields
| Line item | Q2 2026 |
|---|---|
| Yield on earning assets | 8.95% |
| Yield on loans | 10.92% |
| Yield on securities | 2.94% |
Funding costs
| Line item | Q2 2026 |
|---|---|
| Cost of funds | 1.66% |
| Cost of interest-bearing deposits | 1.92% |
| Cost of interest-bearing liabilities | 1.94% |
| Cost of borrowings | 3.99% |
Spread and margin
| Line item | Q2 2026 |
|---|---|
| Net interest margin | 7.62% |
| Yield to cost spread | 7.01% |
Interest income and expense
| Line item | Q2 2026 |
|---|---|
| Interest income on loans | $9.8M |
| Total interest expense | $1.6M |
| Interest expense on deposits | $1.6M |
Yields and Funding Costs trend
Last 12 quarters as filed. Every value plotted here also appears in the tables above.
Yields and Funding Costs by quarter
| Quarter | Yield on earning assets | Cost of funds | Net interest margin | Loans | Securities |
|---|---|---|---|---|---|
| Q3 2023 | 11.07% | 1.35% | 9.94% | 13.60% | 1.36% |
| Q4 2023 | 10.87% | 1.72% | 9.41% | 13.39% | 1.39% |
| Q1 2024 | 10.31% | 1.93% | 8.68% | 13.08% | 1.64% |
| Q2 2024 | 10.28% | 2.08% | 8.54% | 12.72% | 1.78% |
| Q3 2024 | 10.23% | 2.15% | 8.43% | 12.64% | 1.79% |
| Q4 2024 | 10.19% | 2.05% | 8.48% | 12.57% | 1.85% |
| Q1 2025 | 9.77% | 1.89% | 8.20% | 11.98% | 2.46% |
| Q2 2025 | 9.60% | 1.89% | 8.03% | 11.55% | 2.72% |
| Q3 2025 | 9.56% | 1.84% | 8.04% | 11.42% | 2.82% |
| Q4 2025 | 9.47% | 1.77% | 8.01% | 11.39% | 2.83% |
| Q1 2026 | 8.99% | 1.67% | 7.62% | 10.92% | 2.93% |
| Q2 2026 | 8.95% | 1.66% | 7.62% | 10.92% | 2.94% |
First National Bank yields and funding costs, all the way back
Yields and Funding Costs back to 2001 · peer percentiles on every line item · Excel export
Unlock First National Bank, freeSource: Call Report Schedules RI and RC-K, as filed with the FFIEC and standardized by BankRegReports. Dollar amounts are as reported, point-in-time; income statement items are year-to-date through the report date. See the full First National Bank profile, peer group comparison, or how this data updates.
Regulator records: FDIC BankFind (cert 25894) · FFIEC NIC profile (RSSD 944355)