| # | Institution | Type | Metro | Assets | Efficiency ratio |
|---|---|---|---|---|---|
| 1 | Columbia Savings and Loan Association Milwaukee, WI | Bank | Milwaukee-Waukesha, WI | $20.6M | 176.02% |
| 2 | Lakewood Credit Union Rib Lake, WI | Credit Union | — | $14.9M | 114.84% |
| 3 | Badger-Globe Credit Union Neenah, WI | Credit Union | — | $53.4M | 113.82% |
| 4 | East Wisconsin Savings Bank Kaukauna, WI | Bank | Appleton, WI | $265.8M | 111.18% |
| 5 | Stoppenbach Credit Union Jefferson, WI | Credit Union | — | $1.8M | 104.93% |
| 6 | Great North Bank Florence, WI | Bank | Iron Mountain, MI-WI | $233.4M | 102.00% |
| 7 | The Equitable Bank, S.S.B. Wauwatosa, WI | Bank | Milwaukee-Waukesha, WI | $327.1M | 99.90% |
| 8 | Park Bank, National Association Holmen, WI | Bank |
| La Crosse-Onalaska, WI-MN |
| $76.5M |
| 99.70% |
| 9 | Wisconsin Latvian, Inc. Credit Union Milwaukee, WI | Credit Union | — | $3.1M | 97.49% |
| 10 | Superior Municipal Employees Credit Union Superior, WI | Credit Union | — | $3.0M | 96.49% |
| 11 | Golden Rule Community Credit Union Ripon, WI | Credit Union | — | $41.9M | 95.92% |
| 12 | Prime Financial Credit Union Cudahy, WI | Credit Union | — | $162.0M | 94.12% |
| 13 | Unity Bank Augusta, WI | Bank | Eau Claire, WI | $574.8M | 94.11% |
| 14 | Fox Valley Savings Bank Fond Du Lac, WI | Bank | Fond du Lac, WI | $387.3M | 93.96% |
| 15 | Oshkosh Community Credit Union Oshkosh, WI | Credit Union | — | $20.4M | 92.85% |
| 16 | Air Tech Credit Union Milwaukee, WI | Credit Union | — | $2.2M | 92.49% |
| 17 | Prospera Credit Union Appleton, WI | Credit Union | — | $378.8M | 91.62% |
| 18 | Northwestern Mutual Wealth Management Milwaukee, WI | Bank | Milwaukee-Waukesha, WI | $557.7M | 90.95% |
| 19 | M.E. Employees Credit Union Wausau, WI | Credit Union | — | $18.4M | 90.78% |
| 20 | Superior Choice Credit Union Superior, WI | Credit Union | — | $725.8M | 90.46% |
| 21 | Meadowland Credit Union Sheboygan Falls, WI | Credit Union | — | $35.6M | 90.31% |
| 22 | Forward Financial Credit Union Niagara, WI | Credit Union | — | $85.1M | 89.80% |
| 23 | Southern Lakes Credit Union Kenosha, WI | Credit Union | — | $113.2M | 89.20% |
| 24 | Unitedone Credit Union Manitowoc, WI | Credit Union | — | $336.5M | 89.13% |
| 25 | Ripco Credit Union Rhinelander, WI | Credit Union | — | $188.8M | 88.96% |
| 26 | Shoreline Credit Union Two Rivers, WI | Credit Union | — | $153.1M | 87.22% |
| 27 | Ixonia Bank Ixonia, WI | Bank | Watertown-Fort Atkinson, WI | $1.08B | 86.70% |
| 28 | Guardian Credit Union Oak Creek, WI | Credit Union | — | $291.2M | 86.18% |
| 29 | Lco Federal Credit Union Hayward, WI | Credit Union | — | $2.9M | 85.64% |
| 30 | Coulee Bank La Crosse, WI | Bank | La Crosse-Onalaska, WI-MN | $524.4M | 85.56% |
| 31 | Taylor Credit Union Medford, WI | Credit Union | — | $88.4M | 85.42% |
| 32 | Bay Shore Credit Union Marinette, WI | Credit Union | — | $48.4M | 85.39% |
| 33 | Wisconsin Medical Credit Union Green Bay, WI | Credit Union | — | $15.2M | 85.36% |
| 34 | Marshfield Medical Center Credit Union Marshfield, WI | Credit Union | — | $93.0M | 85.33% |
| 35 | Avestar Credit Union Waterloo, WI | Credit Union | — | $66.5M | 85.26% |
| 36 | Northwoods Community Credit Union Park Falls, WI | Credit Union | — | $93.7M | 84.95% |
| 37 | Community First Bank Rosholt, WI | Bank | Stevens Point, WI | $97.6M | 84.66% |
| 38 | Laona State Bank Laona, WI | Bank | — | $296.6M | 84.46% |
| 39 | Brewery Credit Union Milwaukee, WI | Credit Union | — | $58.1M | 84.03% |
| 40 | Thrivent Trust Company Appleton, WI | Bank | Appleton, WI | $15.5M | 83.68% |
| 41 | Police Credit Union Sheboygan, WI | Credit Union | — | $898K | 82.59% |
| 42 | Heartland Credit Union Madison, WI | Credit Union | — | $656.7M | 82.55% |
| 43 | State Bank of Reeseville Reeseville, WI | Bank | Beaver Dam, WI | $169.5M | 82.39% |
| 44 | Ergo Bank Markesan, WI | Bank | — | $276.7M | 81.45% |
| 45 | Evergreen Credit Union Neenah, WI | Credit Union | — | $63.9M | 81.30% |
| 46 | Marine Credit Union La Crosse, WI | Credit Union | — | $1.10B | 81.06% |
| 47 | PyraMax Bank, FSB Greenfield, WI | Bank | Milwaukee-Waukesha, WI | $588.7M | 80.35% |
| 48 | Premier Community Bank Marion, WI | Bank | — | $552.1M | 80.05% |
| 49 | Prevail Bank Medford, WI | Bank | — | $1.03B | 79.68% |
| 50 | Kohler Credit Union Sheboygan, WI | Credit Union | — | $762.1M | 79.30% |