Wisconsin Billed CHIP for Vaccines While Sitting on $3.6M
Summary
Wisconsin's Department of Health Services kept drawing new federal reimbursement to buy children's vaccines under the Children's Health Insurance Program while a $3.6 million balance from prior years sat unreconciled in the state's own vaccine-purchase accounts, according to the state's March 2026 single audit. The nonpartisan Legislative Audit Bureau questioned $2,626,695 -- the federal share of that stale balance -- and found DHS never ran the annual check federal rules require to catch the gap. DHS agreed with the finding and says it has since cut its next estimate by $3 million.
A reconciliation that never happened
Wisconsin runs a separate program, SCHIP, that provides health coverage -- including vaccines -- to uninsured children in low-income families whose vaccines aren't covered under the federal Vaccines for Children program. estimates the annual cost of those SCHIP vaccines, charges that estimate to , and draws federal reimbursement at 's enhanced matching rate -- the higher federal cost-share Congress set for children's coverage. Federal grant regulations (2 CFR 200.403 and 200.406⧉) set the baseline was supposed to follow: costs charged to a federal award must be necessary and reasonable, and any credit or leftover balance has to reduce the next request, not sit alongside it. That is the check skipped for federal fiscal year 2024-2025.
The gap it missed was not small. charged $5.7 million for the year's estimated SCHIP vaccine costs, drawing $4.1 million in federal reimbursement -- but 's own vaccine-purchase accounts already held a $3.6 million balance carried in from prior years before that new money arrived, and 's separate vaccine accounts spent $5.2 million on vaccines that year. Auditors found never subtracted the leftover balance from its new estimate, so the federal government kept paying for vaccines Wisconsin already had the money to buy.
View data as table
| Charged to CHIP (estimate) | $5.7 million |
|---|---|
| Federal reimbursement received | $4.1 million |
| Actually spent on vaccines | $5.2 million |
| Unreconciled balance carried in | $3.6 million |
| Questioned by auditors | $2,626,695 |
One finding in a bigger stack
The vaccine-reconciliation finding is one of 20 the Legislative Audit Bureau reported for 2024-25, spanning $18.2 billion in federal financial assistance⧉ that Wisconsin state agencies administer -- three of the 20 rated "material weakness," auditor language for a control failure serious enough that a misstatement or violation could go undetected. alone runs $10.6 billion of that federal money, more than any other state agency, and covered 193,633 children with an open case at some point during the year on $317.4 million in federal spending. Auditors separately flagged a second, unrelated problem the same year -- letting some participants who'd aged out stay enrolled -- a reminder that the vaccine-fund lapse was not an isolated slip in an otherwise clean program.
The response
agreed with the finding and the recommendation⧉, and told auditors it began the required reconciliation in August 2025, cutting its FFY 2025-2026 vaccine-cost estimate by $3.0 million as a result. Whether the $2,626,695 in questioned federal costs gets clawed back is a separate question the audit doesn't resolve -- questioned costs are a finding for the federal awarding agency, the Centers for Medicare & Medicaid Services, to act on, not an automatic repayment.
The takeaway
- Wisconsin's charged the federal program $5.7 million for 2024-25 vaccine costs without checking that against a $3.6 million balance already sitting in its own vaccine accounts. The state's Legislative Audit Bureau found the required annual reconciliation simply didn't happen.
- Auditors questioned $2,626,695 -- the federal share of the unreconciled balance. That figure roughly tracks 's enhanced federal matching rate, since only the federal portion of the stale balance was questioned.
- actually spent $5.2 million on SCHIP vaccines that year -- meaning the leftover balance equaled nearly 70% of a full year's vaccine spending, money that had already accumulated before the new federal reimbursement was even requested.
- This is one of 20 findings, including 3 material weaknesses, in a single Wisconsin audit covering $18.2 billion in federal funds -- administers the largest share, $10.6 billion, of any state agency.
- agreed with the finding and cut its next vaccine-cost estimate by $3.0 million, but whether the questioned $2.6 million is actually repaid is up to , not automatic.
All figures in this piece come from Finding 2025-306 and the surrounding introduction/schedule sections of the Wisconsin Legislative Audit Bureau's State of Wisconsin 2024-25 Single Audit (Report 26-03, March 2026) -- a nonpartisan legislative audit, not a partisan or advocacy source. The comparison of the unreconciled balance to actual annual vaccine spending (roughly 70%), the federal-share ratio of questioned costs to the balance, and the questioned costs' share of total spending are this outlet's own arithmetic on the audit's reported figures; see analysis.json for method and caveats. The audit does not state whether has sought or will seek recovery of the questioned $2,626,695; that determination was not resolved as of the report's publication and this piece does not assume an outcome. A blind adversarial verifier, working from the same public document with no access to this draft, independently checked every itemized fact; see verification.json.
Sources(1) ▾
- Wisconsin Legislative Audit Bureau, State of Wisconsin FY 2024-25 Single Audit (Report 26-03) (2026-03-01) — The nonpartisan Legislative Audit Bureau's annual single audit of Wisconsin's use of federal funds. Finding 2025-306 (pp. 45-46) documents 's failure to reconcile SCHIP vaccine cost estimates charged to against actual spending, questioning $2,626,695 in federal funds. Table 2 (p. 7) and the audit overview (p. 9) supply agency-wide federal award totals and the audit's overall findings count. The Finding 2025-300 background (p. 30) supplies total 2024-25 participant and expenditure figures for context. legis.wisconsin.gov · original document
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Wisconsin's Department of Health Services () kept billing the federal Children's Health Insurance Program for children's vaccines while sitting on a $3.6 million balance left over from prior years that it never checked against its new estimate, according to the State of Wisconsin FY 2024-25 Single Audit⧉ published in March 2026 by the nonpartisan Legislative Audit Bureau -- the state's own watchdog for how Wisconsin agencies spend federal money, whose findings state agencies are expected to answer. Auditors questioned $2,626,695⧉ -- flagged the federal share of the stale balance as a cost the state should not have drawn -- after finding had gone a full year without running the reconciliation federal rules require. The mechanism is simple: federal reimbursement is supposed to track what a state still needs, not stack on top of money it already has; skip the check, and the same children's health program ends up drawing new federal dollars while cash for the same purpose sits unspent.