Bank of Lake Mills
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Data as of · sourced from FFIEC call reports. How we update
Bank of Lake Mills is an FDIC-insured commercial bank headquartered in Lake Mills, WI, established in 1893 (FDIC certificate 8695), and it is supervised by the FDIC. At Q2 2026 it reported total assets of $533.8M, up 35.1% from Q2 2025, the 63rd largest of 153 banks headquartered in Wisconsin. Its CET1 capital ratio was 12.81% at Q2 2026, above regulatory requirements.
- Charter
- Commercial bank
- Regulator
- FDIC
- Deposit insurance
- FDIC
- FDIC certificate
- 8695
- Headquarters
- Lake Mills, WI
- Established
- 1893
- Total assets, Q2 2026
- $533.8M
- Assets vs Q2 2025
- +35.1%
- CET1 ratio, Q2 2026
- 12.81%
- Domestic offices
- 2 FDIC institution directory, current count
- Routing number
- 075903174
- Latest call report
- Q2 2026, FFIEC 041 · Bank of Lake Mills call report
- Asset rank in state
- 63rd of 153 in Wisconsin
Bank of Lake Mills is one of the more profitable banks of its size. The Lake Mills, Wisconsin bank had $534 million in assets at June 30, 2026, up 35.1% from a year earlier. It earns about $4.37 a year on every $100 of assets, 3.4 times the median of $1.28 for the 2,627 banks with $100 million to $1 billion in assets. It also spends about 29 cents to bring in each dollar of revenue, about half the median of 61 cents for banks its size.
Earnings jumped: net income for the quarter was $5.9 million, 89% above the same quarter a year earlier. Over the same year, loans grew 43.5% and deposits grew 32.6%. Funding is the softer spot: it pays an average of 2.95% on its deposits and borrowings, higher than about 9 in 10 banks its size (median 1.80%).
As of June 30, 2026, Bank of Lake Mills reported a CET1 capital ratio of 12.81%, a return on assets of 4.37%, a nonperforming-loan ratio of 0.69% and a Texas ratio of 5.35%. The figures come from its call report filed with the FFIEC.
Of the 153 banks headquartered in Wisconsin, Bank of Lake Mills is the 63rd largest by total assets at Q2 2026. Quarter on quarter (Q1 2026 to Q2 2026), its total assets rose 0.7% to $533.8M, loans rose 0.3% and deposits rose 7.8%. Other consumer loans made up 48.1% of its total loans on June 30, 2026, its largest category; next came 1-4 family residential loans at 25.5%. Its 2 offices in the FDIC Summary of Deposits are in Lake Mills, WI and Watertown, WI; its Lake Mills office books 78% of its branch deposits. By the capital ratios in its Q2 2026 call report, Bank of Lake Mills meets every capital ratio test for well capitalized.
Headquarters Profile
- Address
- 136 E Madison St, Lake Mills, WI 53551
- County
- Jefferson
- Metro Area
- Watertown-Fort Atkinson, WI
- Charter
- Commercial bank, state charter, Fed non-member, FDIC-supervised
- Primary Regulator
- FDIC
- FDIC Region
- Chicago (Region 9)
- Federal Reserve member
- No
- Federal Reserve district
- District 7, Chicago
- Fiduciary (trust) powers
- —
- Call Report form
- FFIEC 041
- Established
- January 1, 1893
- Domestic offices
- 2 FDIC institution directory, current count
- Employees (FTE)
- 39
- Domestic deposits
- $432.3M
- Allowance for credit losses
- $2.2M
- Net charge-offs (YTD)
- $10K
- Average total assets
- $536.2M
- Average total loans
- $468.1M
- Average interest-bearing deposits
- $349.7M
- Tax status
- Subchapter S
- Ownership
- Stock
- Community bank
- Yes
- FDIC-insured since
- January 2, 1934
- FDIC Cert
- 8695
- Fed RSSD
- 477349
- Website
- www.bankoflakemills.com →
Profitability
Q2 annualizedCapital & Liquidity
Balance Sheet
Income Statement
Operating & Funding
Ratios tagged annualized use the Q2 income alone. The UBPR and FDIC annualize the year to date instead. FDIC BankFind divides by the average of quarter-end total assets, the UBPR by RC-K average assets. The YTD margin is the UBPR's tax-equivalent figure over its own average earning assets; FDIC BankFind's margin is not tax-equivalent. How we compute these figures
Quarterly trends
Bank of Lake Mills's total assets moved between a low of $321.0M (Q4 2023) and a high of $533.8M (Q2 2026) from Q3 2023 to Q2 2026, and it earned a profit in all 12 quarters. The line under each chart compares Q2 2026 with Q2 2025. How these charts are built
$533.8M total assets against $395.1M; $476.4M total liabilities against $347.2M.
$459.6M net loans and leases against $319.6M; $432.3M total deposits against $326.0M.
$38.0M securities against $40.2M; $12.9M cash and balances due against $18.2M.
$12.1M total interest income against $8.6M; $3.5M total interest expense against $3.0M.
$8.7M net interest income against $5.6M.
-$375K total noninterest income against $1.1M; $2.4M total noninterest expense against $3.5M.
No provision recorded in the last 12 quarters.
$5.9M net income against $3.1M.
4.37% return on assets against 2.76%; 6.76% net interest margin against 5.31%.
12.81% CET1 capital ratio against 17.27%; 11.24% tier 1 leverage ratio against 11.70%.
Inside the full Bank of Lake Mills terminal
21 quarters of trends · 8 tabs · peer percentiles · watchlist alerts
Unlock this bank, freeWatch flags
Automated conditions triggered on this bank's latest filing. Advisory only; see the source metric pages for full context. Each flag is tagged Regulatory when it cites an official supervisory threshold, or BRR analysis when it's our own band, informed by our data and models.
Loans outstanding are at or above total deposits. The bank reports little borrowing or brokered funding, so the difference is carried mainly by equity and other liabilities. Worth watching if loan growth continues to outpace deposits. Industry heuristic, not a supervisory threshold.
Bank of Lake Mills rankings
Its closest position to the top of a national ranking is 21 of 3,611, for ROA; its furthest is 1,464 of 2,134, for CET1 ratio.
Quarterly trend: last 8 quarters
Across the 8 quarters to Q2 2026, its return on assets ran from 0.07% (Q1 2026) to 4.37% (Q2 2026) and its net interest margin ran from 3.90% (Q3 2024) to 6.76% (Q2 2026).
| Quarter | CET1 | ROA | NPL | Texas | NIM |
|---|---|---|---|---|---|
| Q2 2026 | 12.81% | 4.37% | 0.69% | 5.35% | 6.76% |
| Q1 2026 | 11.32% | 0.07% | 0.55% | 4.61% | 6.09% |
| Q4 2025 | 12.54% | 1.84% | 1.05% | 7.78% | 5.13% |
| Q3 2025 | 13.78% | 2.55% | 0.91% | 7.17% | 5.36% |
| Q2 2025 | 17.27% | 2.76% | 0.76% | 4.88% | 5.31% |
| Q1 2025 | 12.63% | 2.81% | 0.16% | 1.40% | 5.19% |
| Q4 2024 | 14.60% | 1.87% | 0.17% | 1.30% | 4.50% |
| Q3 2024 | 13.82% | 1.44% | 0.07% | 0.59% | 3.90% |
Swipe the table sideways to see every column.
Branch Network
View all 2 branches → Branch count from the FDIC Summary of Deposits, June 30, 2026. The domestic office count above is the FDIC's current figure, so the two can differ.
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Bank of Lake Mills (main office) | Lake Mills , WI | 53551 | $339.3M |
| Watertown Branch | Watertown , WI | 53094 | $93.0M |
Regulatory record
Facts as filed or published, not a rating.
- Deposit market share
- 0.2% of deposits in WI, rank 71 of 185 institutions
- Period: June 30, 2026. Source: FDIC Summary of Deposits.
- SBA 7(a) lending
- 1 loans, $60K approved, $60K average. 0.00% of that year's loans have since been charged off
- Period: Federal fiscal year 2023 (October to September). Source: SBA 7(a) and 504 loan data (FOIA).
- Not on file
- Enforcement actions, Mortgage lending (HMDA), Consumer complaints, CFPB enforcement, CRA examination rating. No record from these sources, which is not the same as a clean record. Sources
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Frequently asked about Bank of Lake Mills
What are Bank of Lake Mills's total assets?
As of the Q2 2026 filing, Bank of Lake Mills reported total assets of $533.8 million in its FFIEC call report.
Where is Bank of Lake Mills headquartered?
It is headquartered in Lake Mills, WI, United States.
When was Bank of Lake Mills founded?
It was established in 1893, per the FDIC institution directory.
Is Bank of Lake Mills FDIC-insured?
Yes. It is an FDIC-insured commercial bank (FDIC Certificate #8695). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category, per FDIC rules.
Who regulates Bank of Lake Mills?
Bank of Lake Mills's primary federal regulator is the FDIC.
What is Bank of Lake Mills's CET1 capital ratio?
It reported a Common Equity Tier 1 (CET1) capital ratio of 12.81% in its Q2 2026 call report, above regulatory requirements.
How many branches does Bank of Lake Mills operate?
It operates 2 domestic offices, per the FDIC institution directory. That count includes administrative and limited-service offices as well as full-service branches.
What is Bank of Lake Mills's Texas Ratio?
Its Texas Ratio is 5.35% in its Q2 2026 call report, within the healthy range (at or below 50%, the level at which problem assets reach half of the capital cushion). The Texas Ratio measures non-performing assets against the bank's capital and reserves.
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