| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2025 |
Corrections, Department Of |
Department Of Administration |
$54,363,913.06 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Zignego Co Inc |
$54,357,777.24 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Treasurer, Building Trust Fund |
$54,345,954.00 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Northeast Asphalt Inc |
$53,194,953.84 |
Wisconsin State Checkbook |
| 2021 |
Core Retirement Investment Trust |
Delta Dental Plan Of Wis Inc |
$52,815,659.96 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Department Of Workforce Development |
$52,543,349.65 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Zignego Co Inc |
$51,508,294.99 |
Wisconsin State Checkbook |
| 2019 |
Health Services, Department Of |
Dxc Technology Services Llc |
$51,481,155.65 |
Wisconsin State Checkbook |
| 2019 |
Health Services, Department Of |
Dxc Technology Services Llc |
$51,481,155.65 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Rock Road Companies Inc |
$51,354,921.02 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Integrity Grading & Excavating |
$51,179,239.95 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Deloitte Consulting |
$51,140,420.69 |
Wisconsin State Checkbook |
| 2025 |
Building Commission |
Market & Johnson Inc |
$51,015,630.85 |
Wisconsin State Checkbook |
| 2023 |
Building Commission |
J H Findorff & Sons Inc |
$50,891,806.56 |
Wisconsin State Checkbook |
| 2025 |
Administration, Department Of |
Department Of Workforce Development |
$50,823,134.49 |
Wisconsin State Checkbook |
| 2025 |
Corrections, Department Of |
Upper Peninsula Health Group |
$50,164,555.08 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Northeast Asphalt Inc |
$50,150,474.76 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Name Withdrawn |
$50,121,308.78 |
Wisconsin State Checkbook |
| 2018 |
Building Commission |
J P Cullen & Sons Inc |
$49,049,408.54 |
Wisconsin State Checkbook |
| 2020 |
Core Retirement Investment Trust |
Delta Dental Plan Of Wis Inc |
$48,551,391.88 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Zenith Tech Inc |
$48,337,667.05 |
Wisconsin State Checkbook |
| 2019 |
Health Services, Department Of |
Employee Trust Funds |
$48,302,721.98 |
Wisconsin State Checkbook |
| 2019 |
Health Services, Department Of |
Employee Trust Funds |
$48,302,721.98 |
Wisconsin State Checkbook |
| 2022 |
Corrections, Department Of |
Wisconsin Retirement System |
$48,267,328.09 |
Wisconsin State Checkbook |
| 2023 |
Building Commission |
Vjs Construction Services, Inc. |
$48,201,914.80 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Vinton Construction Co |
$47,857,857.12 |
Wisconsin State Checkbook |
| 2023 |
Corrections, Department Of |
Department Of Administration |
$47,843,036.82 |
Wisconsin State Checkbook |
| 2025 |
Health Services, Department Of |
Wisconsin Retirement System |
$47,645,870.43 |
Wisconsin State Checkbook |
| 2018 |
Employee Trust Funds, Department Of |
Strategic Resource Company Src |
$47,582,141.15 |
Wisconsin State Checkbook |
| 2024 |
Building Commission |
C D Smith Construction Inc |
$47,265,919.25 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Zenith Tech Inc |
$46,968,018.14 |
Wisconsin State Checkbook |
| 2025 |
Corrections, Department Of |
Fed-Oasdi Specialized Disb. Supplier |
$46,824,701.75 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
I-39 Constructors Llc |
$46,339,308.31 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Employee Trust Funds |
$46,221,252.33 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Department Of Administration |
$46,193,698.71 |
Wisconsin State Checkbook |
| 2020 |
Building Trust |
Miron Construction Co Inc |
$46,067,875.92 |
Wisconsin State Checkbook |
| 2025 |
Natural Resources, Department Of |
Employee Trust Funds |
$45,831,744.74 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Mashuda Contractors Inc |
$45,594,464.99 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Cardinal Health 110 Inc |
$45,323,059.71 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Accelerated Analytical Inc |
$45,223,483.50 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Us Bank Supplier For P-Card Payments |
$45,059,114.26 |
Wisconsin State Checkbook |
| 2024 |
Building Commission |
J H Findorff & Sons Inc |
$44,736,677.13 |
Wisconsin State Checkbook |
| 2018 |
Building Commission |
Fowler & Hammer Inc |
$44,556,515.25 |
Wisconsin State Checkbook |
| 2023 |
Administration, Department Of |
Constellation Newenergy Gas Dv |
$44,434,289.56 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Employee Trust Funds |
$44,159,990.60 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Mashuda Contractors Inc |
$44,116,886.93 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Madison Gas & Electric Co |
$44,114,447.27 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Constellation Newenergy Gas Dv |
$43,924,773.82 |
Wisconsin State Checkbook |
| 2025 |
Administration, Department Of |
Public Service Commission |
$43,890,982.68 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
James Peterson Sons Inc |
$43,560,525.59 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Walsh Construction Co Ii Llc |
$43,467,837.44 |
Wisconsin State Checkbook |
| 2022 |
Public Instruction, Department Of |
Cesa #6 |
$43,466,710.92 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Department Of Administration |
$43,376,044.70 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Madison Gas & Electric Co |
$43,216,786.30 |
Wisconsin State Checkbook |
| 2024 |
Health Services, Department Of |
Wisconsin Retirement System |
$43,204,941.16 |
Wisconsin State Checkbook |
| 2023 |
Building Commission |
Miron Construction Co Inc |
$43,192,861.67 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Rock Road Companies Inc |
$43,107,454.83 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Northeast Asphalt Inc |
$42,898,828.05 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Department Of Administration |
$42,339,672.19 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Rock Road Companies Inc |
$42,245,735.18 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Madison Gas & Electric Co |
$42,165,830.42 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Department Of Administration |
$41,986,785.10 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Name Withdrawn |
$41,897,283.35 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Department Of Administration |
$41,537,789.81 |
Wisconsin State Checkbook |
| 2022 |
Corrections, Department Of |
Department Of Administration |
$41,101,213.72 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Zenith Tech Inc |
$41,098,148.24 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Department Of Administration |
$41,029,176.80 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Integrity Grading & Excavating |
$40,910,747.04 |
Wisconsin State Checkbook |
| 2025 |
Building Commission |
J P Cullen & Sons Inc |
$40,880,218.40 |
Wisconsin State Checkbook |
| 2024 |
Corrections, Department Of |
Fed-Oasdi Specialized Disb. Supplier |
$40,250,944.11 |
Wisconsin State Checkbook |
| 2024 |
Governor, Office Of The |
Department Of Public Instruction |
$40,239,875.20 |
Wisconsin State Checkbook |
| 2025 |
Corrections, Department Of |
Cardinal Health 110 Inc |
$40,223,447.87 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Deloitte Consulting |
$40,106,123.03 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Deloitte Consulting |
$40,106,123.03 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Noah Associates Inc |
$39,688,000.00 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Wi Physicians Serv Ins Corp |
$39,554,933.77 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Wi Physicians Serv Ins Corp |
$39,554,933.77 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Payne & Dolan Inc |
$39,428,073.90 |
Wisconsin State Checkbook |
| 2019 |
Building Commission |
J P Cullen & Sons Inc |
$39,219,417.65 |
Wisconsin State Checkbook |
| 2019 |
Building Commission |
J P Cullen & Sons Inc |
$39,219,417.65 |
Wisconsin State Checkbook |
| 2023 |
Corrections, Department Of |
Vestica Healthcare Llc |
$39,081,860.80 |
Wisconsin State Checkbook |
| 2023 |
Corrections, Department Of |
Fed-Oasdi Specialized Disb. Supplier |
$39,041,265.76 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Department Of Health Services |
$38,903,133.08 |
Wisconsin State Checkbook |
| 2025 |
Employee Trust Funds, Department Of |
Connectyourcare, Llc |
$38,864,175.91 |
Wisconsin State Checkbook |
| 2016 |
University Of Wisconsin System |
Madison Gas & Electric Company |
$38,739,935.42 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Madison Gas & Electric Co |
$38,678,157.49 |
Wisconsin State Checkbook |
| 2017 |
Workforce Development, Department Of |
Department Of Administration |
$38,662,830.69 |
Wisconsin State Checkbook |
| 2017 |
Workforce Development, Department Of |
Department Of Administration |
$38,662,830.69 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Treasurer, Building Trust Fund |
$38,650,096.00 |
Wisconsin State Checkbook |
| 2025 |
Administration, Department Of |
Department Of Health Services |
$38,513,282.78 |
Wisconsin State Checkbook |
| 2023 |
Natural Resources, Department Of |
Employee Trust Funds |
$38,492,658.08 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Data Recognition |
$38,491,341.00 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
State Of Minnesota |
$38,341,641.97 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Corporate Payment Systems |
$38,270,784.07 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Chippewa Concrete Services Inc |
$38,219,086.46 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Us Bank Madison Pro Card |
$38,180,933.04 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Rock Road Companies Inc |
$37,934,503.85 |
Wisconsin State Checkbook |
| 2024 |
Employee Trust Funds, Department Of |
Connectyourcare, Llc |
$37,875,388.86 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Alorica Inc |
$37,856,611.26 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Employee Trust Funds |
$37,584,412.68 |
Wisconsin State Checkbook |