Medicaid Financing Changes Under the OBBBA: Provider Tax Waiver Final Rule and Caps on Medicaid Manager Care SDPs

By Sukrti Thonse & James A. Robertson on March 18, 2026

Implementation of the One Big Beautiful Bill Act (OBBBA) continues to reshape Medicaid financing structures across the country. In early 2026, the Centers for Medicare & Medicaid Services (CMS) issued several regulatory actions that operationalize key OBBBA provisions that affect how states fund Medicaid programs and how hospitals receive supplemental payments.

Two developments that are particularly significant for providers are CMS’s Provider Tax Waiver Final Rule limiting certain state Medicaid financing arrangements and new CMS guidance imposing caps on Medicaid managed care State Directed Payments (SDPs).

Together, these changes may significantly alter Medicaid supplemental payment flows and introduce new fiscal uncertainty for hospitals, particularly those serving large Medicaid populations.

CMS Finalizes Provider Tax Waiver Rule

On January 29, 2026, CMS issued a final rule implementing OBBBA provisions restricting how states may use provider taxes to generate federal Medicaid matching funds. The rule becomes effective April 3, 2026.

Historically, some states relied on non-uniform or non-broad-based provider taxes, approved through federal waivers, to finance Medicaid supplemental payments and maintain program funding levels. The new rule narrows the circumstances under which such arrangements may qualify for federal approval and establishes phased compliance deadlines for existing waiver-based financing structures.

As a result, states relying heavily on waiver-supported provider taxes may need to restructure Medicaid funding models or identify alternative revenue sources.

For hospitals, these changes are significant because provider tax structures are often closely tied to:

Supplemental Medicaid payments
Medicaid Disproportionate Share Hospital (DSH) funding
State Medicaid program sustainability

The practical impact will vary across states depending on how heavily they relied on waiver-based financing arrangements.

CMS Caps Medicaid Managed Care State Directed Payments

On February 2, 2026, CMS released guidance implementing Section 71116 of the OBBBA, which governs Medicaid managed care State Directed Payments (SDPs).

The guidance limits certain SDP payments for hospitals, nursing facilities, and academic medical centers by capping reimbursement levels at a specified percentage of Medicare rates. States must revise payment arrangements exceeding these caps beginning with rating periods on or after July 4, 2025, although limited grandfathering provisions extend through 2028.

Over the past several years, SDPs have become a major source of supplemental Medicaid funding for hospitals, particularly in states with large managed care populations. The new caps could reduce available supplemental funding and force states and providers to revisit existing financing arrangements.

FY2026 Appropriations Bill Adjusts Medicaid DSH Cuts

The recently enacted FY2026 federal appropriations bill further modifies Medicaid hospital financing.

Most notably, the legislation delays and reduces previously scheduled Medicaid DSH cuts, scaling a planned three-year, $24 billion reduction down to an $8 billion cut beginning in fiscal year 2028.

While this postponement provides temporary relief, the law also changes how hospital-specific DSH limits are calculated. Under the revised methodology, Medicare, Medicare Advantage, and other primary payments must be deducted when calculating uncompensated care costs. This adjustment could materially affect hospitals serving large numbers of dual-eligible patients, potentially reducing allowable DSH payments.

What Hospitals Should Monitor

These developments reflect a broader trend emerging under OBBBA implementation: while Congress has softened certain funding reductions, it has simultaneously imposed tighter fiscal guardrails on Medicaid financing structures.

Hospitals should expect continued scrutiny of state financing mechanisms and should monitor how their state Medicaid agencies respond to the new federal requirements. Key areas to watch include: