Missouri Cliff Calculator — 2026 ACA Subsidy
By Severance Calculator Editorial · Updated
Missouri Marketplace: HealthCare.gov
Missouri uses a federally-facilitated marketplace (FFM) called HealthCare.gov. Missouri residents enroll at HealthCare.gov.
Medicaid in Missouri: MO HealthNet
Missouri expanded Medicaid under the ACA. MO HealthNet covers adults to 138% FPL.
2026 SLCSP Benchmark Premiums (Missouri)
Statewide average monthly second-lowest-cost Silver plan (SLCSP) premiums by age. Actual premiums vary by rating area.
| Age | 21 | 30 | 40 | 50 | 60 |
|---|---|---|---|---|---|
| Monthly SLCSP | $400 | $453 | $511 | $714 | $1,085 |
2026 ACA Cliff Thresholds by Household Size (Missouri)
MAGI above these amounts zeros out the federal Premium Tax Credit. FPL region: contiguous48.
| Household size | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| 400% FPL cliff | $62,600 | $84,600 | $106,600 | $128,600 | $150,600 |
Key Facts: Missouri ACA
Missouri's Medicaid expansion has a distinctive political history. After the Missouri General Assembly repeatedly declined to expand Medicaid through legislation, voters took direct action: in August 2020, Missouri voters approved Amendment 2, a constitutional ballot initiative that embedded the ACA's Medicaid expansion directly into the Missouri Constitution. This made Missouri's expansion unusually durable — the legislature cannot simply repeal it without another constitutional amendment.
Despite voter approval, the Missouri legislature initially attempted to block implementation by refusing to appropriate funds. A state court ordered implementation to proceed, and Missouri began covering newly eligible adults under MO HealthNet (Missouri's Medicaid program) on October 1, 2021. The expansion covers adults younger than 65 with household income up to 138% FPL.
Missouri uses HealthCare.gov (FFM) for marketplace enrollment. During the 2026 open enrollment period, 365,734 Missouri residents selected marketplace plans, with 87% receiving premium subsidies averaging savings sufficient to bring the average after-subsidy premium to approximately $90/month. Missouri has no state-funded premium subsidy backfill for 2026.
Calculate your Missouri ACA cliff
Inputs default to Missouri; adjust to your household specifics. Cliff = $62,600 (HH=1) / $128,600 (HH=4).
Your situation
Coverage
Income
You're under the cliff
You are at 319% of the federal poverty level.
- Annual PTC
- $1,608
- $134 / month
- MAGI headroom before cliff
- $12,600
- until you hit 400% FPL
PTC dollar values use a state-level SLCSP estimate; verify your exact second-lowest-cost Silver plan on healthcare.gov for your zip.
Primary Sources
- healthinsurance.org — Missouri Marketplace
“Missouri expanded Medicaid eligibility guidelines in 2021, under the terms of a voter-approved ballot measure that implemented the ACA's Medicaid expansion.”
- healthinsurance.org — Missouri Medicaid Adults
“This allows adults younger than 65 to enroll in Medicaid with a household income up to 138% of the poverty level.”
FAQ — Missouri ACA Cliff
- What is the 2026 ACA subsidy cliff in Missouri?
- For a household of 1, MAGI above $62,600 (400% of the 2025 FPL contiguous-48 base) zeros out the federal Premium Tax Credit under IRS Rev. Proc. 2025-25. Household of 4: $128,600. Missouri has no state subsidy backfill, so crossing this threshold eliminates all premium assistance.
- What was Missouri Amendment 2 (2020)?
- Amendment 2 was a constitutional ballot initiative approved by Missouri voters in August 2020 that embedded the ACA's Medicaid expansion directly into the Missouri Constitution. Because it is a constitutional provision, the Missouri legislature cannot repeal it without another statewide vote. Missouri began implementing expansion on October 1, 2021, after a court ordered the state to proceed despite initial legislative resistance to appropriating funds.
- What is MO HealthNet?
- MO HealthNet is Missouri's Medicaid program, administered by the Missouri Department of Social Services. Since October 2021, MO HealthNet covers adults under 65 with income up to 138% FPL under the ACA expansion. The program also covers children, pregnant women, seniors, and disabled adults under traditional Medicaid rules.
- How do I enroll in 2026 marketplace coverage in Missouri?
- Missouri uses HealthCare.gov (the federal FFM marketplace). Open enrollment runs November 1 through January 15. You can also apply for MO HealthNet Medicaid year-round through the Missouri Department of Social Services at mydss.mo.gov.
- Does Missouri have a state subsidy on top of the federal PTC?
- No. Missouri has no state-funded premium subsidy backfill for 2026. Residents rely entirely on federal APTC, which ends above 400% FPL ($62,600 for HH=1). The American Rescue Plan enhanced PTCs expired December 31, 2025.
- How is SLCSP calculated for Missouri?
- The 2026 statewide SLCSP age-band averages for Missouri are: Age 21: $400/mo, Age 30: $453/mo, Age 40: $511/mo, Age 50: $714/mo, Age 60: $1,085/mo. These are statewide averages; Kansas City and St. Louis metro counties may differ from rural Missouri. The federal cliff distance (income vs. 400% FPL) is exact regardless of SLCSP precision.
- Can I reduce my MAGI to stay below the 2026 cliff in Missouri?
- Yes — common strategies include maximizing HSA contributions, deductible IRA or SEP-IRA/Solo 401(k) contributions if self-employed, harvesting capital losses, and deferring Roth conversions. Because Missouri has no state subsidy above 400% FPL, staying below the federal cliff has full dollar impact.