The ACA Bridge Income Plan (2026)

An early retiree who buys health coverage on the ACA marketplace before Medicare lives inside a sharp income constraint. Cross 400% of the federal poverty level by a single dollar in 2026 and the premium tax credit does not taper — it stops. That makes the "bridge years" between retirement and age 65 a planning window with a hard ceiling: how much income to realize, and how much of a traditional balance to convert to Roth, without tipping over the edge. This study hands six representative households to QuantCalc's ACA-bridge optimizer and reports the recommended year-by-year plan for each, next to two reference points: never converting, and a cliff-unaware plan that fills the 12% tax bracket every year.

The 2026 rules this rests on

Why this study is different

QuantCalc already publishes a companion on the cost of the cliff and one on the conversion decision. This one adds the year-by-year income and conversion schedule that keeps a real household under the line.

Six households, plan by plan

Each household retires before 65 and buys marketplace coverage until Medicare. "Net bridge cost" is lifetime federal and state tax, plus net healthcare (premiums after subsidy), plus any IRMAA — the total the plan controls. "% FPL" is each year's income as a share of the federal poverty level for the household size; the coverage column reports the regime that year's plan actually assumes.

California · single · 3-year bridge

Just under the 400% FPL cliff · Single (age 62) · California (Medicaid-expansion state) · traditional $700,000, Roth $60,000, taxable $200,000 · $45,000/yr spending · FPL ceiling 395% ($61,818).

The recommended plan keeps every bridge year's income under the 395% FPL ceiling and captures $43,849 in premium credits — matching the never-convert plan, which also stays subsidy-eligible. Converting is not required to hold the subsidy here; the discipline is the ceiling, not a conversion target. A cliff-unaware plan that fills the 12% bracket every year ($125,405 converted) pushes income across 400% FPL, forfeits $43,849 of subsidy the recommended plan keeps, and costs $65,559 more over the bridge.

Recommended plan, year by year:

Texas · couple · 5-year bridge

Mid-corridor (~250% FPL) · Couple (age 60 & 60) · Texas (non-expansion state) · traditional $900,000, Roth $120,000, taxable $350,000 · $48,000/yr spending · FPL ceiling 250% ($52,875).

The recommended plan keeps every bridge year's income under the 250% FPL ceiling and captures $175,410 in premium credits — matching the never-convert plan, which also stays subsidy-eligible. Converting is not required to hold the subsidy here; the discipline is the ceiling, not a conversion target. A cliff-unaware plan that fills the 12% bracket every year ($561,918 converted) pushes income across 400% FPL, forfeits $175,410 of subsidy the recommended plan keeps, and costs $234,441 more over the bridge.

Recommended plan, year by year:

California · couple · 5-year bridge

At the Medicaid threshold (138% FPL) · Couple (age 60 & 60) · California (Medicaid-expansion state) · traditional $500,000, Roth $80,000, taxable $150,000 · $28,000/yr spending · FPL ceiling 138% ($29,187).

This household sits at the Medicaid threshold, and the recommended plan keeps it there every bridge year — total out-of-pocket healthcare $4,500 over the bridge, with no Roth conversion. Lifting income into the subsidized marketplace instead does not pay off here: the ACA premium credit reduces the premium you owe, it is not a cash rebate on top, so once it is counted correctly a marketplace year costs more out of pocket than a Medicaid year. On a net-cost basis the recommendation at this income is to stay in Medicaid, not to convert into the marketplace. (Medicaid's non-premium trade-offs — asset tests, provider access — sit outside this cost model.) A cliff-unaware plan that fills the 12% bracket every year ($533,822 converted) even captures $30,912 in premium credits in the years it stays under 400% FPL, but crosses the cliff in the rest and still costs $205,644 more over the bridge than the recommended Medicaid plan — once taxes and the cliff are counted.

Recommended plan, year by year:

Texas · single · 3-year bridge

Just under the 400% FPL cliff · Single (age 62) · Texas (non-expansion state) · traditional $650,000, Roth $50,000, taxable $180,000 · $42,000/yr spending · FPL ceiling 395% ($61,818).

The recommended plan keeps every bridge year's income under the 395% FPL ceiling and captures $52,028 in premium credits — matching the never-convert plan, which also stays subsidy-eligible. Converting is not required to hold the subsidy here; the discipline is the ceiling, not a conversion target. A cliff-unaware plan that fills the 12% bracket every year ($130,628 converted) pushes income across 400% FPL, forfeits $52,028 of subsidy the recommended plan keeps, and costs $65,243 more over the bridge.

Recommended plan, year by year:

New York · single · 5-year bridge

Mid-corridor (~250% FPL) · Single (age 60) · New York (Medicaid-expansion state) · traditional $600,000, Roth $60,000, taxable $200,000 · $35,000/yr spending · FPL ceiling 250% ($39,125).

This household sits at the Medicaid threshold, and the recommended plan keeps it there every bridge year — total out-of-pocket healthcare $4,500 over the bridge, with no Roth conversion. Lifting income into the subsidized marketplace instead does not pay off here: the ACA premium credit reduces the premium you owe, it is not a cash rebate on top, so once it is counted correctly a marketplace year costs more out of pocket than a Medicaid year. On a net-cost basis the recommendation at this income is to stay in Medicaid, not to convert into the marketplace. (Medicaid's non-premium trade-offs — asset tests, provider access — sit outside this cost model.) A cliff-unaware plan that fills the 12% bracket every year ($276,601 converted) pushes income across 400% FPL and forfeits the premium subsidy entirely, costing $160,817 more over the bridge than the recommended Medicaid plan.

Recommended plan, year by year:

New York · couple · 3-year bridge

At the Medicaid threshold (138% FPL) · Couple (age 62 & 62) · New York (Medicaid-expansion state) · traditional $450,000, Roth $70,000, taxable $130,000 · $27,000/yr spending · FPL ceiling 138% ($29,187).

Every bridge year resolves to medicaid. The recommended plan runs $41,051 of Roth conversions at essentially zero added bridge cost (net cost within $0 of never converting) — room the never-convert plan leaves unused, because at this income the conversions fit under the standard deduction and do not erode any subsidy. A cliff-unaware plan that fills the 12% bracket every year ($371,100 converted) pushes income across 400% FPL and forfeits the premium subsidy entirely, costing $193,027 more over the bridge than the recommended Medicaid plan.

Recommended plan, year by year:

What it means

• The ceiling is the lever, not the conversion. Holding the subsidy is about keeping realized income under 400% FPL (or under the household's chosen ceiling). For most of these households that is achievable while converting little or nothing; a plan that converts aggressively to "fill a bracket" is what crosses the line and forfeits the credit.
• The Medicaid threshold is a genuine fork. Below roughly 138% FPL in an expansion state, a household is in Medicaid rather than a subsidized marketplace plan. Nudging income just above that line trades Medicaid for a credited marketplace plan; the model values the captured subsidy, but Medicaid's non-premium features — provider networks, cost-sharing, asset rules — sit outside it. We surface the per-year regime so that fork is visible rather than buried in a single number.
• This is a bridge-window plan, not a lifetime-conversion verdict. The plan minimizes cost during the pre-Medicare bridge — tax, net premiums, IRMAA — and treats a conversion as an in-window cost. It does not price the post-65 payoff of converting (lower future required distributions or Medicare surcharges), so the recommended conversion amounts are deliberately conservative: convert where it is free or captures subsidy, not to chase a lifetime Roth target. Sizing the full lifetime conversion is a separate calculation.
• The figures are dated to current 2026 law. Every number assumes the restored 400% FPL cliff and the 2.10%–9.96% schedule. A retroactive extension of the enhanced credits would change the picture, and the engine can switch schedules if that happens.

CC-BY-4.0 — free for any use including republication and journalism, with attribution to QuantCalc Research.

Methodology

Changelog

• v2026.1 — initial release (2026-07-22). 6 households × 3 plans, deterministic ACA-bridge engine, generated from backend/tools/aca_study_dump.c via scripts/gen_aca_bridge_study.mjs. Current-law 2026 regime (400% FPL cliff, 2.10%–9.96% schedule).

Dataset license: CC-BY-4.0. QuantCalc is an independent retirement-planning research project. Model-dependent results under current 2026 tax and ACA rules; not financial, tax, or legal advice.

@misc{quantcalc2026theacabridgeincomeplan2026,
  title  = {The ACA Bridge Income Plan (2026)},
  author = {{QuantCalc Research}},
  year   = {2026},
  url    = {https://quantcalc.app/research/aca-bridge-income-plan-2026/},
  note   = {Accessed <date>}
}