The benefit cliff: when a raise can leave you worse off

Most advice about money starts from the assumption that more income is better. Usually it is. But some assistance programs do not taper as income rises — they stop. Cross the line by a dollar and the benefit ends completely. That is a benefit cliff, and where one exists a household can end up with more income and less money in hand.

It blindsides people because nothing announces it. The thresholds are published and the arithmetic is public, and almost nothing explains plainly what happens on the far side of the line.

A taper and a cliff are different shapes

A taper reduces a benefit gradually. SNAP is the usual example: benefits fall by roughly 30 cents for each extra dollar of income, so a raise still leaves a household ahead, just by less than the raise. The earned income tax credit phases out across a range rather than at a point. Tapers are unpleasant arithmetic, but they are not traps.

A cliff has no slope. The two that come up most often in 2026 are Medicaid for adults in expansion states, written at 138% of the federal poverty guideline, and the Affordable Care Act premium tax credit, which under current 2026 law ends entirely above 400% of the guideline. The enhanced subsidies that removed that 400% edge expired at the end of 2025 and, as of mid-2026, had not been extended. If Congress restores them the cliff goes away — which is exactly why that one has to be re-checked rather than remembered.

The lines, and the year they belong to

Most federal programs are written as a percentage of the HHS poverty guideline for a household size, published each January. For 2026 the guideline for the 48 contiguous states and DC is $15,960 for one person plus $5,680 for each additional person, so a household of three sits at $27,320 (91 FR 1797). The 2025 table was $15,650 plus $5,500 per additional person (90 FR 5917). These change every January — check the current table at aspe.hhs.gov before you use any of it.

Applying the 2026 table, 138% of that household-of-three figure is 1.38 × $27,320 = $37,701.60. That is where the adult Medicaid line falls for a three-person household in an expansion state under the 2026 guideline. It is not a statement about any particular household; the agency makes that call.

A worked example, entirely hypothetical

The 400% cliff is the clearest one to show, because it is a single number with a single consequence. Marketplace subsidies are set from the prior year's guideline, so 2026 coverage uses the 2025 table: $26,650 for a household of three, and 4 × $26,650 = $106,600.

Give a hypothetical household of three a benchmark silver premium of $1,200 a month — $14,400 for the year — and say they buy that benchmark plan. Under the 2026 applicable-percentage schedule, a household between 300% and 400% of the guideline is expected to contribute 9.96% of income toward it.

At a hypothetical income of $106,000, just under the line, the expected contribution is $106,000 × 9.96% = $10,557.60. The credit covers the rest of the benchmark: $14,400 − $10,557.60 = $3,842.40. Income left after paying the premium is $106,000 − $10,557.60 = $95,442.40.

At a hypothetical $107,000, which is $400 over the line, there is no credit at all under current 2026 law. The household pays the whole $14,400 itself. Income left after the premium is $107,000 − $14,400 = $92,600.00.

So $1,000 more income leaves $2,842.40 less in hand: $95,442.40 − $92,600.00 = $2,842.40. It foots as the lost credit less the extra income, $3,842.40 − $1,000 = $2,842.40. Income tax on the extra $1,000 is ignored throughout this hypothetical, and including it would only widen the gap.

What the arithmetic settles, and what it does not

It settles the shape. It settles nothing about a real household, because benchmark premiums are area-specific, the income counted for the marketplace is modified adjusted gross income rather than gross pay, several programs allow deductions before the test, and the administering agency makes every determination. Nothing here is legal, tax or financial advice.

It is also not a suggestion about what to do at a cliff. Seeing one coming is arithmetic. Deciding anything about it belongs to the household, with the agency, and with whoever they choose to ask.

The tool

CliffEdge takes a current income and an income after a raise or a new job, plus household size and region, and lists the published thresholds between the two: SNAP at 130%, adult Medicaid at 138%, Medicare Extra Help and LIHEAP at 150%, WIC at 185%, the CHIP federal floor at 200%, and the ACA premium tax credit at 400%. For each it prints the income where that line falls on the 2026 guideline, and whether crossing it is a hard cliff or a taper.

It maps boundaries and nothing else. It does not compute the dollar value of any benefit — SNAP allotments, Medicaid's actuarial value and the EITC each need their own agency formula — and it makes no determination about anybody. It runs on your device.