| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2021 |
Transportation |
Wisconsin Retirement System |
$13,121,283.21 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Mashuda Contractors Inc |
$13,119,870.85 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Arthur J Gallagher Risk Management |
$13,116,524.46 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Integrity Grading & Excavating |
$13,101,360.39 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Stark Pavement Corp |
$13,089,078.79 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Cdw Government |
$13,041,560.12 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Ebsco Information Services |
$13,004,286.42 |
Wisconsin State Checkbook |
| 2023 |
Administration, Department Of |
Pitney Bowes Bank Inc |
$13,002,000.00 |
Wisconsin State Checkbook |
| 2022 |
Children And Families, Department Of |
Department Of Administration |
$12,997,215.01 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Larson Construction Co Inc |
$12,977,545.48 |
Wisconsin State Checkbook |
| 2025 |
Health Services, Department Of |
Board Of Regents Uw System |
$12,967,124.90 |
Wisconsin State Checkbook |
| 2025 |
Tourism, Department Of |
Hiebing Group Inc, The |
$12,925,412.71 |
Wisconsin State Checkbook |
| 2017 |
Children And Families, Department Of |
Department Of Health Services |
$12,883,234.26 |
Wisconsin State Checkbook |
| 2017 |
Children And Families, Department Of |
Department Of Health Services |
$12,883,234.26 |
Wisconsin State Checkbook |
| 2025 |
Building Commission |
Greenfire Management Services Llc |
$12,868,348.43 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
City Of Madison |
$12,866,937.90 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Gerke Excavating, Inc |
$12,844,070.83 |
Wisconsin State Checkbook |
| 2024 |
Corrections, Department Of |
Corrections, Dept Of |
$12,837,078.36 |
Wisconsin State Checkbook |
| 2022 |
Corrections, Department Of |
Us Bank Supplier For P-Card Payments |
$12,836,815.78 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Single Payment Supplier |
$12,817,120.42 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Single Payment Supplier |
$12,817,120.42 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Corre Inc |
$12,768,823.64 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Encumbrance Supplier |
$12,768,323.72 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Madison Gas & Electric |
$12,756,344.54 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Madison Gas & Electric |
$12,756,344.54 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Michigan State University |
$12,747,041.26 |
Wisconsin State Checkbook |
| 2025 |
Building Commission |
Milbach Construction Serv Co |
$12,739,066.51 |
Wisconsin State Checkbook |
| 2024 |
Children And Families, Department Of |
Employee Trust Funds |
$12,738,334.75 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Aecom Technical Services Inc |
$12,712,096.08 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
H James & Sons Inc |
$12,708,646.46 |
Wisconsin State Checkbook |
| 2023 |
Children And Families, Department Of |
Department Of Health Services |
$12,707,390.45 |
Wisconsin State Checkbook |
| 2025 |
Military Affairs, Department Of |
Department Of Health Services |
$12,689,618.48 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Aladdin Food Management Services Llc |
$12,683,909.75 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Dane County |
$12,663,755.67 |
Wisconsin State Checkbook |
| 2024 |
Natural Resources, Department Of |
Wisconsin Retirement System |
$12,647,124.26 |
Wisconsin State Checkbook |
| 2025 |
Children And Families, Department Of |
Department Of Administration |
$12,571,401.49 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
We Energies |
$12,504,738.90 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Pheifer Brothers Construction Co Inc |
$12,486,623.92 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Ayres Associates |
$12,482,978.58 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Dane County |
$12,481,332.31 |
Wisconsin State Checkbook |
| 2023 |
Administration, Department Of |
Corvel Corporation |
$12,445,188.10 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Musson Bros Inc |
$12,442,970.81 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Michigan State University |
$12,412,818.70 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Corvel Corporation |
$12,408,971.11 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Corvel Corporation |
$12,408,971.11 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Miron Construction Co Inc |
$12,386,985.73 |
Wisconsin State Checkbook |
| 2024 |
Building Commission |
Continuum Architects & |
$12,368,109.09 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Morton Salt Inc |
$12,365,672.11 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Wi Construction Partners-Zoo |
$12,364,647.28 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Tapfin Process Solutions |
$12,308,148.37 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
A-1 Excavating Inc |
$12,297,995.56 |
Wisconsin State Checkbook |
| 2019 |
Revenue, Department Of |
Gtech Corporation |
$12,297,468.52 |
Wisconsin State Checkbook |
| 2019 |
Revenue, Department Of |
Gtech Corporation |
$12,297,468.52 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Shield T3 |
$12,272,626.25 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Single Payment Supplier |
$12,264,194.12 |
Wisconsin State Checkbook |
| 2022 |
Natural Resources, Department Of |
Wire Payment - Us Bank |
$12,251,176.99 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
University Of Wisconsin System |
$12,221,193.51 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Gtech Corporation |
$12,212,392.16 |
Wisconsin State Checkbook |
| 2024 |
Employee Trust Funds, Department Of |
Knowledge Services |
$12,209,005.78 |
Wisconsin State Checkbook |
| 2024 |
Children And Families, Department Of |
Department Of Administration |
$12,173,519.45 |
Wisconsin State Checkbook |
| 2022 |
Health Services, Department Of |
Department Of Children And Families |
$12,147,578.69 |
Wisconsin State Checkbook |
| 2019 |
Children And Families, Department Of |
Tapfin Process Solutions |
$12,143,390.14 |
Wisconsin State Checkbook |
| 2019 |
Children And Families, Department Of |
Tapfin Process Solutions |
$12,143,390.14 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Kenosha County |
$12,137,553.80 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Fed-Oasdi Specialized Disb. Supplier |
$12,103,770.44 |
Wisconsin State Checkbook |
| 2025 |
Health Services, Department Of |
Spherion Staffing |
$12,096,193.12 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Walsh Construction Co Ii Llc |
$12,095,712.74 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
We Energies |
$12,070,951.64 |
Wisconsin State Checkbook |
| 2024 |
Health Services, Department Of |
Knowledge Services |
$12,012,624.67 |
Wisconsin State Checkbook |
| 2023 |
Health Services, Department Of |
Knowledge Services |
$12,010,950.96 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Corvel Corporation |
$11,999,984.82 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Department Of Tourism |
$11,989,422.53 |
Wisconsin State Checkbook |
| 2018 |
Revenue, Department Of |
Department Of Administration |
$11,979,763.15 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Wisconsin Retirement System |
$11,976,464.13 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Gerke Excavating, Inc |
$11,968,612.27 |
Wisconsin State Checkbook |
| 2024 |
Natural Resources, Department Of |
Wire Payment - Us Bank |
$11,944,870.60 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Hntb Corp |
$11,933,102.30 |
Wisconsin State Checkbook |
| 2021 |
Conservation |
Department Of Administration |
$11,927,425.14 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Corvel Corporation |
$11,908,625.79 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Krm Partners |
$11,897,870.31 |
Wisconsin State Checkbook |
| 2025 |
Natural Resources, Department Of |
Fed-Oasdi Specialized Disb. Supplier |
$11,875,432.15 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Cdw Government |
$11,865,581.97 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Capital Data Inc |
$11,815,101.31 |
Wisconsin State Checkbook |
| 2025 |
Justice, Department Of |
Employee Trust Funds |
$11,788,930.09 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Pheifer Brothers Construction Co Inc |
$11,768,914.39 |
Wisconsin State Checkbook |
| 2025 |
Veterans Affairs, Department Of |
Employee Trust Funds |
$11,751,449.73 |
Wisconsin State Checkbook |
| 2022 |
Corrections, Department Of |
Corrections, Dept Of |
$11,719,025.17 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Jh Findorff & Son Inc |
$11,716,610.59 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Mashuda Contractors Inc |
$11,709,998.89 |
Wisconsin State Checkbook |
| 2018 |
Children And Families, Department Of |
Department Of Administration |
$11,701,115.14 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Dane County |
$11,650,425.70 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Pheifer Brothers Construction Co Inc |
$11,604,151.69 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Corre Inc |
$11,599,901.44 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Lalonde Contractors Inc |
$11,547,806.09 |
Wisconsin State Checkbook |
| 2023 |
Children And Families, Department Of |
Employee Trust Funds |
$11,546,762.78 |
Wisconsin State Checkbook |
| 2025 |
Circuit Courts |
Employee Trust Funds |
$11,532,424.31 |
Wisconsin State Checkbook |
| 2025 |
Building Commission |
Continuum Architects & |
$11,504,276.41 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
We Energies |
$11,497,757.78 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Michigan State University |
$11,493,950.33 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Strand Assoc Inc |
$11,489,199.60 |
Wisconsin State Checkbook |