Federal Incentives, State Strategy: The Spending Effects of Medicaid Provider Taxes

• In Event: Medicaid Policy and Access to Care: Evidence on Utilization, Outcomes, and System Design

Abstract

Medicaid provider taxes—levied on hospitals and nursing homes to finance the state share of Medicaid—have become a central yet understudied component of state fiscal strategy. By 2025, all but one state used at least one provider tax, with many relying on them for over 20% of their non‑federal Medicaid share. These taxes are designed to draw down additional federal matching funds and potentially expand program spending, but little causal evidence exists on whether they actually increase Medicaid expenditures or simply recycle dollars within the system. This study examines the long‑run causal impact of adopting Medicaid provider taxes on state Medicaid spending. The core question is whether provider taxes lead to higher total and per‑enrollee Medicaid expenditures or whether they function primarily as a fiscal mechanism that shifts funds without expanding overall program resources. The analysis uses newly compiled, state‑level data on the adoption of hospital and nursing home provider taxes from 2005 to 2024, merged with annual measures of total and per‑enrollee Medicaid spending for all states over the same period. The study estimates the causal effect of provider tax adoption using an event‑study difference‑in‑differences design that exploits staggered implementation of hospital and nursing home provider taxes across states from 2005 to 2024. The approach compares within‑state changes in Medicaid spending before and after adoption to contemporaneous trends in non‑adopting states. Dynamic leads and lags are included to test pre‐trends and to capture the evolution of spending effects over time. Preliminary results indicate that adopting a provider tax lead to statistically and economically significant increases in Medicaid spending. The largest effects appear in the taxed provider categories—hospital and nursing home spending—though spillovers to total program expenditures are also evident. These increases persist for multiple years following adoption. The pattern of results suggests that states primarily use provider taxes to leverage additional federal matching funds rather than substituting away general fund contributions. The findings provide the first long‑run causal evidence that Medicaid provider taxes expand program spending rather than simply recycling funds. This has direct implications for ongoing federal debates about tightening provider tax regulations and for broader discussions of fiscal federalism and intergovernmental incentives. Understanding how states use provider taxes to shape Medicaid financing is essential for evaluating the equity, sustainability, and strategic behavior embedded in the Medicaid program.

Author

• Lady Loveday Ikeya, Indiana University
  Presenting Author