Medicaid or Marketplace? The Income Line That Decides Which One You Get

There is no single application that decides between Medicaid and a subsidized Marketplace plan. There is one income figure, one question about which state you live in, and a set of thresholds that hand you to one system or the other. Once you know your number, the rest follows.

The complication is that 2026 is the first year in a while when the old rules are back in force — and a great deal of advice still online describes a system that ended on December 31, 2025.

The income figure that matters

Both systems use MAGI — modified adjusted gross income — for most people under 65. It is roughly your adjusted gross income plus any tax-exempt interest, non-taxable Social Security and excluded foreign income.

Two details do most of the work:

• Medicaid looks at monthly income now. Lose a job in March and you may qualify in March, whatever the year’s total will be.
• The Marketplace looks at your estimated income for the whole coverage year. You are guessing, and at tax time the guess is reconciled — underestimate and you repay some credit, overestimate and you get the difference back.

MAGI rules do not apply to Medicaid for people aged 65 and over, or for those qualifying through blindness or disability. Those pathways use different income and asset tests, and are covered separately — start at Medicaid.gov eligibility.

The thresholds

Annual household income	1 person	Family of 4	What it means
Up to 138% FPL	$22,025	$45,540	Medicaid, in an expansion state
100% – 400% FPL	$15,960 – $63,840	$33,000 – $132,000	Marketplace premium tax credit
Up to 250% FPL	$39,900	$82,500	Extra cost-sharing help, silver plans only
Above 400% FPL	Over $63,840	Over $132,000	Full price

48 contiguous states and DC, using the 2026 HHS poverty guidelines. Alaska and Hawaii have higher figures. Marketplace eligibility for a coverage year is assessed against the guidelines published the previous year; Medicaid uses those in force when you apply.

What changed at the end of 2025

The enhanced premium tax credits expired on December 31, 2025. Between 2021 and 2025 they capped premiums as a lower share of income and removed the 400% ceiling entirely. Both of those changes are gone. The 400% cliff is back — a dollar over the line means no credit at all, not a smaller one — and required contributions at every income level are higher than they were.

Two practical consequences:

• Anything you read about Marketplace subsidies written before 2026 may describe a system that no longer exists. Check the date on the page.
• Income near 400% FPL now needs managing. If you are a little over, a deductible retirement contribution or an HSA contribution can lower MAGI below the line and be worth thousands in restored credit. This is a genuine reason to talk to a tax preparer before the year closes.

Congress revisits this regularly. Confirm the position for the coverage year you are enrolling in at HealthCare.gov rather than assuming either way.

Which state you live in

Most states expanded Medicaid to adults under 65 with income up to 138% of poverty. In those states, the boundary is clean: below 138%, Medicaid; above it, the Marketplace.

In states that did not expand, there is no clean boundary. Medicaid for adults is limited to specific groups — usually parents with very low incomes, pregnant women, people with disabilities — and childless adults are often ineligible at any income. Meanwhile the premium tax credit only begins at 100% of poverty, because the law assumed Medicaid would cover everyone below that.

The coverage gap

The result is a group of people who earn too much for their state’s Medicaid and too little for a Marketplace subsidy. It is not an oversight in your paperwork; it is a structural hole, and it affects roughly 1.5 million people.

If you are in it, the options are real but limited: community health centers that charge on a sliding scale, hospital charity care programs — which are legally required of non-profit hospitals and are chronically under-claimed — and prescription assistance direct from manufacturers. A local assister can map these faster than a website: localhelp.healthcare.gov.

It is also worth re-checking each year. States have continued to adopt expansion, several by ballot measure.

Comparing the two, honestly

	Medicaid	Subsidized Marketplace plan
Premium	None, or nominal	Your share after the tax credit
Deductible	None	Often substantial, unless you qualify for cost-sharing reductions
Co-pays	Very small, capped	Per the plan
Provider network	Narrower; not all doctors accept it	Varies by plan, generally broader
Dental and vision for adults	Varies by state — some cover fully, some not at all	Usually separate and extra
Enroll when?	Any time of year	Open enrollment or a qualifying life event
If income changes	Report it; eligibility is reassessed	Report it; the credit adjusts

Medicaid is materially cheaper at the point of use. The trade-off is the network — in some areas finding a specialist who takes Medicaid is genuinely hard. If you have an established relationship with a doctor, check what they accept before you assume one route is better.

The silver plan rule worth knowing

Below 250% of poverty you qualify for cost-sharing reductions — a lower deductible, lower co-pays and a lower out-of-pocket maximum. They are only available on silver plans.

People at that income routinely buy a bronze plan because the monthly premium is lower, and in doing so give up a benefit worth far more than the premium difference. At the bottom of the range, a silver plan with cost-sharing reductions can behave like a platinum plan. If your income is under 250% of poverty, compare on total expected cost, not on the premium.

Children are a separate question

Children’s eligibility limits are much higher than adults’ — frequently 200% to 400% of poverty through Medicaid and CHIP. It is entirely normal for parents to be on a Marketplace plan while the children are on CHIP at no cost, and that combination is usually the right answer rather than a mistake. One application covers both.

How to apply

One application, two possible destinations. Apply at HealthCare.gov — or at your state’s own exchange, if it has one — and the system routes you. Say yes when it asks to check Medicaid eligibility.

• Open enrollment runs from November 1 to January 15 in most states. Enroll by December 15 for cover starting January 1.
• A qualifying life event — losing coverage, marriage, a birth, a move — opens a 60-day special enrollment period.
• Medicaid and CHIP have no enrollment season. Apply the day you need them.

Free, trained help is available and is not a sales channel: localhelp.healthcare.gov finds navigators and certified assisters near you, who are paid to help you enroll and are not paid by an insurer.

If you are denied Medicaid

A denial notice must state a reason and the rule behind it, and you have the right to a fair hearing. Two reasons are worth checking immediately, because both are common and both are fixable:

• Procedural denials — a renewal form that never arrived, a document not matched to your file. This is not a decision that you are ineligible, and it is usually resolved by supplying the paperwork rather than by appealing.
• Annual income used instead of current monthly income — if your circumstances changed mid-year, say so explicitly.

Free legal aid organizations handle Medicaid appeals routinely: find one here.