| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2025 |
Administration, Department Of |
Public Defender Board |
$6,510,039.44 |
Wisconsin State Checkbook |
| 2019 |
Public Instruction, Department Of |
Employee Trust Funds |
$6,504,913.14 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Madison, City Of |
$6,502,792.51 |
Wisconsin State Checkbook |
| 2017 |
Public Instruction, Department Of |
Employee Trust Funds |
$6,484,150.44 |
Wisconsin State Checkbook |
| 2024 |
Administration, Department Of |
Sun Microsystem Inc |
$6,480,865.56 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Strand Assoc Inc |
$6,451,527.34 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Health Services, Dept. Of |
$6,446,698.28 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Msa Professional Services Inc |
$6,442,256.22 |
Wisconsin State Checkbook |
| 2018 |
Educational Communications Board |
University Of Wisconsin System |
$6,418,002.01 |
Wisconsin State Checkbook |
| 2018 |
District Attorneys |
Employee Trust Funds |
$6,414,005.11 |
Wisconsin State Checkbook |
| 2024 |
Veterans Affairs, Department Of |
Maxim Healthcare Services Inc |
$6,413,820.85 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Ge Healthcare |
$6,413,385.53 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Oracle America Inc |
$6,410,045.28 |
Wisconsin State Checkbook |
| 2024 |
Administration, Department Of |
Wisconsin Retirement System |
$6,408,584.61 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Milwaukee County |
$6,398,869.00 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Wi Public Service Corp |
$6,388,172.12 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Stark Asphalt |
$6,375,624.27 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Heartland Business Systems Llc |
$6,361,171.65 |
Wisconsin State Checkbook |
| 2020 |
Public Employee Trust |
Department Of Administration |
$6,355,006.56 |
Wisconsin State Checkbook |
| 2018 |
Agriculture, Trade And Consumer Protection, Department Of |
Department Of Administration |
$6,344,261.15 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Levy Restaurants |
$6,343,076.61 |
Wisconsin State Checkbook |
| 2025 |
Public Instruction, Department Of |
Act Inc |
$6,328,283.66 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Short Elliott Hendrickson Inc |
$6,316,151.46 |
Wisconsin State Checkbook |
| 2021 |
Public Employee Trust |
Department Of Administration |
$6,299,739.21 |
Wisconsin State Checkbook |
| 2024 |
Public Instruction, Department Of |
Knowledge Services |
$6,296,257.56 |
Wisconsin State Checkbook |
| 2018 |
Veterans Affairs, Department Of |
Department Of Administration |
$6,293,976.57 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Tapfin Process Solutions |
$6,292,509.57 |
Wisconsin State Checkbook |
| 2021 |
Conservation |
Fed-Oasdi Specialized Disb. Supplier |
$6,291,392.23 |
Wisconsin State Checkbook |
| 2017 |
Children And Families, Department Of |
Department Of Workforce Development |
$6,290,837.81 |
Wisconsin State Checkbook |
| 2019 |
Building Commission |
Sma Construction Services Llc |
$6,289,066.36 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Daar Engineering Inc |
$6,279,305.59 |
Wisconsin State Checkbook |
| 2021 |
Variable Retirement Investment Trust |
Wire Payment - Us Bank |
$6,278,000.00 |
Wisconsin State Checkbook |
| 2019 |
Revenue, Department Of |
Department Of Administration |
$6,272,950.44 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Payne & Dolan Inc |
$6,268,138.51 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Wisconsin Cheesemakers Association |
$6,267,628.00 |
Wisconsin State Checkbook |
| 2025 |
Health Services, Department Of |
Nuwest Group Holdings Llc |
$6,267,052.31 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Act Inc |
$6,266,464.00 |
Wisconsin State Checkbook |
| 2020 |
General Fund-Uw |
Madison Metro Transit |
$6,265,785.50 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Kapur & Associates Inc |
$6,264,946.43 |
Wisconsin State Checkbook |
| 2024 |
Administration, Department Of |
Wisconsin Interactive Network |
$6,255,890.03 |
Wisconsin State Checkbook |
| 2020 |
Capital Improvement |
Ellis Stone Construction Co |
$6,252,704.37 |
Wisconsin State Checkbook |
| 2019 |
Employee Trust Funds, Department Of |
Staywell Company Llc, The |
$6,236,957.97 |
Wisconsin State Checkbook |
| 2019 |
Building Commission |
Fowler & Hammer Inc |
$6,235,910.29 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Nuwest Group Holdings Llc |
$6,221,772.85 |
Wisconsin State Checkbook |
| 2017 |
Health Services, Department Of |
Metastar, Inc. |
$6,197,727.12 |
Wisconsin State Checkbook |
| 2025 |
Public Instruction, Department Of |
Cesa #6 |
$6,195,114.30 |
Wisconsin State Checkbook |
| 2024 |
Natural Resources, Department Of |
White Lake Dock & Dredge Inc |
$6,173,545.75 |
Wisconsin State Checkbook |
| 2025 |
Veterans Affairs, Department Of |
Amergis Healthcare Staffing Inc |
$6,173,324.85 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Era-Valdivia Contractors Inc |
$6,170,621.18 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Advanced Hro Solutions Inc |
$6,168,041.76 |
Wisconsin State Checkbook |
| 2025 |
Public Instruction, Department Of |
Knowledge Services |
$6,153,485.80 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Fast Enterprises, Llc |
$6,152,043.75 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Grainger |
$6,141,855.95 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Pitlik & Wick Inc |
$6,138,945.55 |
Wisconsin State Checkbook |
| 2019 |
Workforce Development, Department Of |
Tapfin Process Solutions |
$6,127,349.52 |
Wisconsin State Checkbook |
| 2025 |
Administration, Department Of |
Department Of Natural Resources |
$6,111,474.14 |
Wisconsin State Checkbook |
| 2019 |
Circuit Courts |
Employee Trust Funds |
$6,108,481.03 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Metastar, Inc. |
$6,108,285.68 |
Wisconsin State Checkbook |
| 2017 |
Administration, Department Of |
Wisconsin Interactive Network |
$6,100,529.34 |
Wisconsin State Checkbook |
| 2018 |
Employee Trust Funds, Department Of |
Department Of Administration |
$6,097,899.29 |
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 |
| 2023 |
Wisconsin State Checkbook |
Wisconsin Power & Light Co |
$6,084,250.77 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
We Energies |
$6,079,832.87 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
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 |
| 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 |
Wisconsin State Checkbook |
Radtke Contractors Inc |
$6,032,537.01 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Ayres Associates |
$6,028,055.22 |
Wisconsin State Checkbook |
| 2022 |
Capital Improvement |
Vjs Construction Services, Inc. |
$6,016,357.09 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Department Of Administration |
$6,015,745.40 |
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 |
| 2023 |
Wisconsin State Checkbook |
Mccabe Construction Inc |
$5,992,248.77 |
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 |
| 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 |
| 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 |
| 2025 |
Public Instruction, Department Of |
Cesa #1 |
$5,905,868.68 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Joe Daniels Construction Co Inc |
$5,899,709.27 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Us Bank Corporate Payment Systems |
$5,869,443.76 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Fowler & Hammer Inc |
$5,843,966.62 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
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 |
| 2025 |
Justice, Department Of |
Knowledge Services |
$5,806,482.55 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
Taser International Inc |
$5,804,925.06 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Bi Inc |
$5,801,394.36 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Apple Computer |
$5,795,451.25 |
Wisconsin State Checkbook |
| 2023 |
Wisconsin State Checkbook |
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 |