Total Assets
$726M
Total balance-sheet footings
FDIC Cert #13565 · Sun Prairie, Wisconsin · Est. 1903
Bank of Sun Prairie - FDIC Bank Health Profile
A community-scale look at Bank of Sun Prairie's own numbers, pulled straight from its quarterly FDIC Call Report.
- $726M
- Total assets
- C
- Health grade · Fair
- 0.49%
- Return on assets
- 11.8%
- Tier 1 capital
Data updated July 2026
The verdict
Bank of Sun Prairie earns a PlainBankData health grade of C (59/100), with well-capitalized at 11.75% Tier 1, 0.49% ROA, 79% efficiency ratio.
- #1,349
- largest of 4,313 FDIC banks by assets
- 69th
- percentile by asset size, nationally
- 11.75%
- Tier 1 ratio - above the 10% well-capitalized line
- 15th
- percentile for profitability (ROA), nationally
This grade is PlainBankData's own interpretation of the bank's Call Report, not an FDIC rating, deposits here stay federally insured to $250,000 per depositor, per category, regardless of grade.
How Bank of Sun Prairie's 59/100 score adds up
Each factor is scored from this bank's own FDIC Call Report figures, then summed to the composite health score.
Bank of Sun Prairie's composite health score
Tier 1 Capital Ratio (11.75%) 28/40
Return on Assets (ROA) (0.49%) 7/25
Texas Ratio (0.38%) 20/20
Efficiency Ratio (79.28%) 4/15
59 of 100 points earned across four weighted factors. See our methodology for the full scoring formula.
Balance sheet at a glance
Total Deposits
$608M
Customer-funded liabilities
Net Loans
$580M
Outstanding loan book
Net Income
$4M
Bottom-line earnings
Capital adequacy vs federal thresholds
Where Bank of Sun Prairie ranks
Every one of the 4,307 FDIC-insured banks with a computed health score, bucketed by score. Bank of Sun Prairie's score of 59/100 falls in the highlighted band.
Bank of Sun Prairie's size among FDIC-insured banks
Every one of the 4,307 FDIC-insured banks with reported assets, bucketed by total-asset scale (note the buckets are powers of 10, most banks cluster in the $100M-$1B range). Bank of Sun Prairie's $726M falls in the highlighted band.
Safety metrics
Tier 1 capital ratio
Well-capitalized 10%
11.75% of risk-weighted assets - above the federal "well-capitalized" threshold of 10%.
Tier 1 Capital Ratio
11.75%
Texas Ratio
0.38%
Equity Capital
$66M
Profitability metrics
Return on Assets (ROA)
15th percentile nationally
0.49%
Return on Equity (ROE)
5.06%
Efficiency Ratio
79.28%
What the numbers say about Bank of Sun Prairie
Bank of Sun Prairie is an FDIC-insured institution (Certificate #13565) headquartered in Sun Prairie, Wisconsin, established in 1903. It holds $726M in total assets - 1,349th of 4,313 FDIC-insured banks, $608M in customer deposits, and $580M in net loans. Its capital position: a Tier 1 ratio of 11.75%, meeting the 10% federal well-capitalized bar, alongside a Texas Ratio of 0.38% that is well inside the healthy sub-50% band. That combination rolls up into a PlainBankData health grade of C (59 of 100), blending Tier 1 capital, ROA, the Texas Ratio, and efficiency. These figures come directly from the bank's quarterly FDIC Call Report.
Bank of Sun Prairie sits 43rd of 155 banks headquartered in Wisconsin by total assets, placing it in the middle tier of the state's banking landscape.
Income & expense breakdown
$35M
Interest Income
$3M
Non-Interest Income
$16M
Non-Interest Expense
Asset quality, Texas Ratio detail
The Texas Ratio compares troubled assets to the capital available to absorb losses. Bank of Sun Prairie reports a Texas Ratio of 0.38% - comfortably in the healthy band; non-performing loans are a small fraction of the bank’s loss-absorbing capital.
Texas Ratio
Caution 50%
0.38% - lower is safer; 100% is the level at which troubled assets equal loss-absorbing capital.
Top banks in Wisconsin by total assets
Source: FDIC BankFind Suite, Call Report (FFIEC 031/041) Bank of Sun Prairie (FDIC Cert #13565) - Tier 1 capital ratio, total assets, deposits, ROA/ROE · 2025 FDIC Call Reports filed quarterly; latest publicly-available vintage shown. Health grades are PlainBankData's interpretation of regulatory filings and are not official FDIC ratings.
Other banks in Wisconsin
All Wisconsin banks →| Bank | Assets | Grade | ROA |
|---|---|---|---|
| Associated Bank, National AssociationGreen Bay | $45.1B | A | 1.10% |
| Nicolet National BankGreen Bay | $9.2B | A | 1.66% |
| Johnson BankRacine | $7.2B | A | 1.07% |
| Town Bank, National AssociationHartland | $4.5B | A | 1.27% |
| Bank First, N.A.Manitowoc | $4.5B | A | 1.64% |
| First Business BankMadison | $4.1B | B | 1.36% |
| John Deere Financial, f.s.b.Middleton | $3.4B | A | 3.87% |
| Lake Ridge BankMiddleton | $3.3B | B | 0.98% |
Frequently asked questions
What is Bank of Sun Prairie's health grade?▼
Bank of Sun Prairie receives a health grade of C (59/100) based on four FDIC financial metrics: Tier 1 Capital Ratio (40%), Return on Assets (25%), Texas Ratio (20%), and Efficiency Ratio (15%). This bank meets regulatory minimums but has some areas of financial weakness to monitor.
How large is Bank of Sun Prairie?▼
Bank of Sun Prairie holds $726M in total assets and $608M in deposits, ranking 1,349th of 4,313 FDIC-insured banks by asset size. It is headquartered in Sun Prairie, Wisconsin.
Is my money safe at Bank of Sun Prairie?▼
Yes, deposits at Bank of Sun Prairie (Certificate #13565) are FDIC-insured up to $250,000 per depositor, per ownership category, regardless of health grade.
What is Bank of Sun Prairie's Tier 1 Capital Ratio?▼
Bank of Sun Prairie has a Tier 1 Capital Ratio of 11.75%. That clears the federal 10% bar regulators use to call a bank "well-capitalized."
What is the Texas Ratio for Bank of Sun Prairie?▼
Bank of Sun Prairie has a Texas Ratio of 0.38%. Staying under 50% is the level analysts treat as healthy. The Texas Ratio measures non-performing loans against equity and reserves, a higher ratio signals greater exposure to loan losses.
How efficient is Bank of Sun Prairie?▼
Bank of Sun Prairie has an Efficiency Ratio of 79.28%. Past the 60% mark, a bigger slice of revenue is absorbed by operating costs. This metric compares non-interest expenses to total revenue.
What to do with this
How to read Bank of Sun Prairie's profile as a depositor or analyst.
- Bank of Sun Prairie's grade reflects capital, profitability, and asset quality, read the four pillars before drawing conclusions. How grades work
- Compare Bank of Sun Prairie against other Wisconsin banks before moving funds. Wisconsin banks
Not financial advice. Health grades are PlainBankData's interpretation of public FDIC Call Report data, not official FDIC ratings or predictions. Verify the latest figures at the FDIC BankFind Suite.
Every figure on PlainBankData is rendered directly from FDIC federal source data, no number is typed in by an editor. Informational only, not professional advice; consult a qualified professional before acting on it. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Q4 2025.
Disclaimer: Data from the FDIC BankFind Suite. PlainBankData does not rate or rank banks as investment or safety recommendations. Health grades are informational only, computed from public regulatory filings. Always verify current standing directly with FDIC.gov before making financial decisions.