| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2023 |
Administration, Department Of |
Department Of Justice |
$6,095,783.37 |
Wisconsin State Checkbook |
| 2025 |
Workforce Development, Department Of |
Wisconsin Retirement System |
$6,095,680.82 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Knowledge Services |
$6,087,644.18 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Xcel Energy |
$6,085,268.73 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
We Energies |
$6,079,832.87 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Life Technologies/Lsg |
$6,076,480.80 |
Wisconsin State Checkbook |
| 2017 |
Agriculture, Trade And Consumer Protection, Department Of |
Department Of Administration |
$6,075,814.29 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Super Western Inc |
$6,073,363.47 |
Wisconsin State Checkbook |
| 2023 |
Corrections, Department Of |
Attenti Us Inc |
$6,067,427.90 |
Wisconsin State Checkbook |
| 2024 |
Corrections, Department Of |
Department Of Health Services |
$6,063,832.44 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Speedway Sand & Gravel Inc |
$6,055,328.79 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Columbia County |
$6,047,214.23 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Xcel Energy |
$6,043,642.61 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Sun Microsystem Inc |
$6,034,518.83 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Radtke Contractors Inc |
$6,032,537.01 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Graef |
$6,031,742.08 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Ayres Associates |
$6,028,055.22 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Forward 45 Llc |
$6,016,590.70 |
Wisconsin State Checkbook |
| 2017 |
Agriculture, Trade And Consumer Protection, Department Of |
Department Of Administration |
$6,016,030.89 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Department Of Administration |
$6,015,745.40 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Department Of Administration |
$6,015,745.40 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Treas Sheboygan County |
$6,015,560.93 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Pitney Bowes |
$6,004,589.09 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Martin Brothers Distributing Co Inc |
$5,999,539.54 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Drc/Ctb |
$5,995,861.87 |
Wisconsin State Checkbook |
| 2021 |
Capital Improvement |
Absolute Construction |
$5,990,461.10 |
Wisconsin State Checkbook |
| 2025 |
Revenue, Department Of |
Wisconsin Retirement System |
$5,984,093.25 |
Wisconsin State Checkbook |
| 2022 |
Wisconsin Technical College System, Board Of |
Department Of Public Instruction |
$5,976,079.28 |
Wisconsin State Checkbook |
| 2023 |
Health Services, Department Of |
Novir Llc |
$5,975,499.30 |
Wisconsin State Checkbook |
| 2021 |
Lottery |
Hy Connect |
$5,967,800.91 |
Wisconsin State Checkbook |
| 2021 |
Conservation |
Us Bank Supplier For P-Card Payments |
$5,964,504.22 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Board Of Regents Uw System |
$5,953,175.19 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Board Of Regents Uw System |
$5,953,175.19 |
Wisconsin State Checkbook |
| 2019 |
Health Services, Department Of |
Cardinal Health 110 Inc |
$5,942,246.89 |
Wisconsin State Checkbook |
| 2019 |
Health Services, Department Of |
Cardinal Health 110 Inc |
$5,942,246.89 |
Wisconsin State Checkbook |
| 2024 |
Building Commission |
Berglund Construction Company |
$5,928,197.93 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Aladdin Food Management Services Llc |
$5,908,011.04 |
Wisconsin State Checkbook |
| 2018 |
Public Instruction, Department Of |
Tapfin Process Solutions |
$5,907,980.92 |
Wisconsin State Checkbook |
| 2016 |
Natural Resources, Department Of |
Us Bank Of Milwaukee |
$5,906,418.21 |
Wisconsin State Checkbook |
| 2025 |
Public Instruction, Department Of |
Cesa #1 |
$5,905,868.68 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Joe Daniels Construction Co Inc |
$5,899,709.27 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Kl Engineering Inc |
$5,891,575.49 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Oracle America Inc |
$5,889,967.82 |
Wisconsin State Checkbook |
| 2022 |
Health Services, Department Of |
Us Bank Supplier For P-Card Payments |
$5,880,461.95 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Wisconsin Interactive Network |
$5,876,935.32 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Jefferson County |
$5,874,674.85 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Insight |
$5,871,732.51 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Us Bank Corporate Payment Systems |
$5,869,443.76 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Tapco |
$5,866,543.34 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
County Of Brown |
$5,864,642.30 |
Wisconsin State Checkbook |
| 2016 |
Corrections, Department Of |
Cardinal Health 411 Inc |
$5,862,616.35 |
Wisconsin State Checkbook |
| 2023 |
Health Services, Department Of |
Careevolution Llc |
$5,848,368.39 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Concrete Structures Inc |
$5,839,251.29 |
Wisconsin State Checkbook |
| 2024 |
Workforce Development, Department Of |
Wisconsin Retirement System |
$5,835,665.18 |
Wisconsin State Checkbook |
| 2016 |
Health Services, Department Of |
Hp Enterprise Services, Llc |
$5,826,516.27 |
Wisconsin State Checkbook |
| 2025 |
Justice, Department Of |
Knowledge Services |
$5,806,482.55 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Waukesha County |
$5,802,826.44 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Bi Inc |
$5,801,394.36 |
Wisconsin State Checkbook |
| 2016 |
University Of Wisconsin System |
Center For Applied Linguistics |
$5,799,896.24 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Apple Computer |
$5,795,451.25 |
Wisconsin State Checkbook |
| 2023 |
Health Services, Department Of |
Austin Major Group Llc |
$5,788,003.76 |
Wisconsin State Checkbook |
| 2024 |
Public Instruction, Department Of |
Act Inc |
$5,788,001.75 |
Wisconsin State Checkbook |
| 2017 |
Educational Communications Board |
University Of Wisconsin System |
$5,778,581.07 |
Wisconsin State Checkbook |
| 2017 |
Educational Communications Board |
University Of Wisconsin System |
$5,778,581.07 |
Wisconsin State Checkbook |
| 2025 |
Natural Resources, Department Of |
Ewald's Hartford Ford Linc Merc |
$5,771,474.00 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Sma Construction Services Llc |
$5,768,529.40 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Shi Intl Corp |
$5,760,427.60 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Vwr International Inc |
$5,752,669.64 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
University Of Wisconsin System |
$5,751,458.85 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
University Of Wisconsin System |
$5,751,458.85 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Madison Metro Transit |
$5,747,871.86 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Wi Electric Power Co |
$5,747,513.41 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Medasource |
$5,741,449.72 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Austin Major Group Llc |
$5,739,226.76 |
Wisconsin State Checkbook |
| 2023 |
Building Commission |
Berglund Construction Company |
$5,738,206.11 |
Wisconsin State Checkbook |
| 2025 |
Corrections, Department Of |
Medefis Inc |
$5,736,595.70 |
Wisconsin State Checkbook |
| 2019 |
Corrections, Department Of |
Tapfin Process Solutions |
$5,736,497.04 |
Wisconsin State Checkbook |
| 2019 |
Corrections, Department Of |
Tapfin Process Solutions |
$5,736,497.04 |
Wisconsin State Checkbook |
| 2023 |
Natural Resources, Department Of |
Knowledge Services |
$5,729,831.66 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Musson Bros Inc |
$5,726,918.41 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Relyco Plus Llc |
$5,724,717.33 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Antczak Construction Inc |
$5,704,091.76 |
Wisconsin State Checkbook |
| 2024 |
Administration, Department Of |
Department Of Natural Resources |
$5,700,282.49 |
Wisconsin State Checkbook |
| 2022 |
Public Instruction, Department Of |
Act Inc |
$5,699,274.00 |
Wisconsin State Checkbook |
| 2024 |
Health Services, Department Of |
Us Bank Supplier For P-Card Payments |
$5,697,619.21 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Risepoint Llc |
$5,695,135.40 |
Wisconsin State Checkbook |
| 2024 |
Health Services, Department Of |
Metastar, Inc. |
$5,690,591.83 |
Wisconsin State Checkbook |
| 2016 |
Employee Trust Funds, Department Of |
Eflexgroup |
$5,683,784.00 |
Wisconsin State Checkbook |
| 2022 |
Military Affairs, Department Of |
Employee Trust Funds |
$5,678,166.07 |
Wisconsin State Checkbook |
| 2025 |
Wisconsin Economic Development Corporation |
Hoffman York, Inc. |
$5,672,836.84 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
J P Cullen & Sons Inc |
$5,661,230.17 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Anthony Travel Inc |
$5,651,426.95 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Carahsoft Technology Corp |
$5,650,728.83 |
Wisconsin State Checkbook |
| 2024 |
Investment Board |
Wisconsin Retirement System |
$5,650,437.45 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
City Of Madison |
$5,646,403.81 |
Wisconsin State Checkbook |
| 2023 |
Revenue, Department Of |
Fast Enterprises, Llc |
$5,644,318.47 |
Wisconsin State Checkbook |
| 2022 |
Children And Families, Department Of |
Cgi |
$5,638,804.70 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Emcs Inc |
$5,623,297.83 |
Wisconsin State Checkbook |
| 2024 |
Revenue, Department Of |
Wisconsin Retirement System |
$5,618,390.17 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Sofie Co |
$5,617,537.80 |
Wisconsin State Checkbook |