Healthcare Bridge Calculator — Early Retirement to Medicare

The healthcare gap: why it stops people from retiring early

On r/financialindependence, the most common reply to "I think I have enough to retire" is: "What's your healthcare plan?" It stops more early retirements than insufficient savings. And it's not irrational — it's a legitimate five- or six-figure unknown that most retirement calculators simply ignore.

Medicare eligibility begins at 65. Social Security retirement benefits begin as early as 62 but come with no healthcare coverage. If you retire at 57, you face 8 years of marketplace healthcare — a period where a healthy individual might pay $600–$800 per month on the open market, and a couple in their early 60s might face $1,800–$2,000 per month at full market rates. Over an 8-year bridge, that's $57,600–$192,000 before a single dollar of Medicare.

The good news: the gap is manageable, and the variability is almost entirely driven by how you manage your taxable income in retirement. Most early retirees dramatically overpay because they don't plan their income around ACA subsidy thresholds. This calculator shows you both scenarios side by side.

How ACA marketplace healthcare works for early retirees

The Affordable Care Act marketplace offers coverage to anyone who is not eligible for employer-sponsored insurance, Medicaid, or Medicare. Early retirees are a natural fit. Premiums in the marketplace are based on four factors: your age, your geographic rating area (county or region), the plan metal tier you choose (Bronze/Silver/Gold/Platinum), and your Modified Adjusted Gross Income (MAGI).

The critical factor is the Premium Tax Credit (PTC). If your household MAGI falls between 100% and 400% of the Federal Poverty Level (approximately $15,650–$62,600 for a single person in 2026), you receive tax credits that reduce your monthly premium — sometimes to as little as zero. The credit applies to Silver plans, which offer the best value for most early retirees due to Cost-Sharing Reduction (CSR) eligibility at income levels below 250% FPL.

What many people don't realize: your subsidy eligibility in early retirement is determined entirely by how much taxable income you recognize in a given year — not your total net worth. A retiree with $2 million in savings can qualify for significant ACA subsidies by drawing primarily from a Roth account, which generates zero MAGI.

Estimated 2026 ACA premiums by income level

The table below shows estimated monthly Silver plan premiums for a 58-year-old individual at different income levels. "Cap" refers to the maximum percentage of income the ACA requires you to pay for the benchmark Silver plan.

Estimates for a single 58-year-old in 2026. Actual premiums vary by state and county. Verify at healthcare.gov.

Income management: the single biggest lever for early retirees

Early retirees have a superpower that workers don't: they can choose exactly how much taxable income to recognize each year. Workers have a salary — income is fixed. Early retirees have a portfolio — income is a choice.

If you have $800,000 in a traditional 401k and $300,000 in a Roth IRA, you can fund your living expenses primarily from the Roth — generating zero MAGI — while keeping ACA subsidies intact. The 401k can be left to grow (or converted via a Roth conversion ladder) without disrupting your subsidy eligibility.

Concretely: a couple retiring at 58 with $40,000 MAGI faces a benchmark Silver plan premium of roughly $133/month per person versus $700/month at full market rate. Over a 7-year bridge that's $47,040 vs $141,120 — a difference of $94,080. For many early retirees, managing income for ACA subsidies is the highest-return action they can take.

The key constraints: Roth IRA conversions count as MAGI. Capital gains from selling taxable brokerage holdings count as MAGI. Qualified dividends count as MAGI. Only after-tax Roth withdrawals (from principal or qualified distributions) are MAGI-neutral. Build your withdrawal sequencing around these rules.

COBRA — and why it usually isn't the answer

COBRA (Consolidated Omnibus Budget Reconciliation Act) allows you to keep your employer's health plan for up to 18 months after leaving a job. The catch: you pay both the employee AND the employer share of the premium, plus a 2% administrative fee. The average employer-sponsored plan costs about $8,000/year for an individual and $22,000/year for a family. COBRA transfers all of that cost to you.

In 2026, average COBRA premiums for individual coverage are approximately $550–$700/month. For a family, $1,500–$1,900/month. This is typically more expensive than an ACA silver plan with subsidies, and COBRA coverage ends at 18 months — meaning you'll need marketplace insurance eventually regardless.

COBRA makes sense in narrow cases: you're mid-treatment and need to maintain continuity with existing providers and medications, or you expect to get new employer coverage within 6 months. For a multi-year early retirement bridge, ACA marketplace with income management almost always wins.

Using your HSA as a healthcare bridge tool

Health Savings Accounts are triple-tax-advantaged: contributions are pre-tax, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. Many FIRE practitioners deliberately maximize HSA contributions for years before retirement, then deploy the balance during the bridge period.

The 2026 HSA contribution limits are $4,300 for individuals and $8,550 for families. If you've been contributing for 10 years, you may have $50,000–$80,000 available — enough to cover several years of ACA premiums entirely. After age 65, HSA funds can be withdrawn penalty-free for any purpose (with ordinary income tax), but medical expenses — including Medicare Part B and D premiums — remain tax-free.

One important caveat: you cannot contribute to an HSA while enrolled in a marketplace ACA plan. HSA contributions require eligibility under a High Deductible Health Plan (HDHP). Once you retire and switch to a marketplace silver plan (which may not be an HDHP), contributions stop — but you can still spend the accumulated balance tax-free on qualified expenses.

What happens at 65 — the Medicare transition

Medicare eligibility starts at 65, and for most people who have worked 40+ quarters, Part A (hospital inpatient) is premium-free. Part B (outpatient care, doctor visits) costs $185/month in 2026. Part D (prescription drug coverage) averages $40–$60/month. A Medigap supplement plan (to cover Part B coinsurance, deductibles, and gaps) adds another $100–$250/month depending on the plan and state.

Total Medicare cost for a typical healthy 65-year-old: approximately $350–$500/month for comprehensive coverage. This is usually meaningfully lower than marketplace coverage in the final bridge years before Medicare, and the cost is far more predictable.

One Medicare tax planning note: IRMAA (Income-Related Monthly Adjustment Amount) surcharges apply to Part B and Part D if your income exceeds thresholds two years prior. For Medicare enrollment starting in 2026, the relevant income year is 2024. The threshold is $103,000 for individuals (single) and $206,000 for couples. If you've been doing large Roth conversions or had a high-income year, you may face IRMAA surcharges in your first year of Medicare.

State differences: Medicaid expansion and ACA marketplaces

As of 2026, 40 states and Washington D.C. have expanded Medicaid under the ACA. In expansion states, Medicaid is available to individuals earning up to 138% of FPL (approximately $21,600/year for a single person). If your MAGI falls below this threshold in an expansion state — perhaps in a year where you draw only from Roth accounts — you may qualify for near-zero-cost Medicaid coverage.

Ten states have not expanded Medicaid. In these states, people earning below 100% FPL fall into a "coverage gap" — they earn too little for ACA marketplace subsidies (which start at 100% FPL) but don't qualify for Medicaid. Early retirees planning geographic flexibility should factor state Medicaid expansion status into their retirement location decision, particularly for bridge years where they plan to keep income very low.

Related planners and calculators

Official resources

Frequently asked questions