The Five-Year Problem Nobody Plans For
Medicare begins at 65. Most people who can afford to retire early want to leave well before that — at 62 when Social Security opens, at 60 when a pension vests, sometimes in their mid-fifties after a long career. Every one of those decisions creates the same gap: a stretch of years with no employer plan, no Medicare, and a health-insurance bill that has to come from somewhere.
It is one of the most underestimated costs in early retirement. A couple retiring at 60 is looking at five years of coverage to fund before Medicare arrives, and the unsubsidized cost of two marketplace policies can easily run $20,000–$30,000 a year. For many households, the health-insurance bridge — not the mortgage, not the travel budget — is the single largest controllable expense of early retirement.
The good news is that this is a plannable problem, and the same retirement income you've spent decades building turns out to be the lever that controls the cost. The decisions you make about which accounts to draw from, when to convert, and how much taxable income to show in these specific years can swing your premiums by tens of thousands of dollars. This guide walks through the real options and the income strategy that ties them together.
Why the Bridge Years Are Different
Before 65, your health-insurance cost is driven by your taxable income — not your wealth. A retiree with $2 million in assets who shows $50,000 of income can qualify for large premium subsidies, while a retiree with far less wealth but a big pension may get none. That inversion is the entire game of the bridge years, and it's why early retirement healthcare is an income-planning problem, not just an insurance-shopping problem.
The Four Ways to Cover the Gap
When an employer plan ends, a pre-Medicare retiree generally has four realistic paths to coverage. Most plans end up using one as the backbone and keeping another in reserve.
1. The ACA Marketplace (usually the backbone)
The Affordable Care Act marketplace — your state exchange or HealthCare.gov — sells individual policies that cannot be denied or surcharged for pre-existing conditions, and it's the only option whose price you can actively manage through your income. For most early retirees it becomes the primary solution, because the premium tax credit can turn an eye-watering sticker price into something very reasonable when income is kept in the right range. We'll spend most of this article here, because it's where the planning leverage lives.
2. COBRA (the bridge's bridge)
Federal COBRA lets you keep your former employer's exact plan for up to 18 months after leaving. The coverage is identical and your providers don't change — but you now pay the full premium plus a 2% administrative fee, with no employer subsidy. That's often $700–$2,000+ per month for family coverage. COBRA shines in two situations: when you're mid-treatment and can't afford to switch networks, or when you're retiring within 18 months of 65 and just need a clean span of coverage to the finish line. As a multi-year solution it's usually the most expensive option on the board.
3. A spouse's employer plan
If one spouse keeps working — even part-time at an employer that offers benefits — getting added to their plan is frequently the cheapest, simplest answer. Leaving a job is a qualifying life event that opens a special enrollment window on a spouse's plan. For couples, "one spouse works two more years for the health insurance" is one of the most common and rational early-retirement compromises there is.
4. Part-time work, retiree medical, or a professional association
Some employers offer retiree medical coverage (increasingly rare, but valuable where it exists). Some retirees take a part-time role specifically for benefits. Others access group coverage through a professional association or by starting a small consulting business. These are situational, but worth checking before assuming the marketplace is the only road.
COBRA Has a One-Way Door at Open Enrollment
You can drop COBRA for a marketplace plan during open enrollment, but voluntarily dropping COBRA mid-year is not a qualifying event for a special enrollment period — only exhausting your 18 months is. Elect COBRA carelessly and you can trap yourself in expensive coverage until the next open enrollment. If you're choosing between COBRA and the marketplace, run the marketplace numbers before the 60-day COBRA election window closes.
How ACA Subsidies Actually Work
The premium tax credit is the heart of pre-Medicare planning, and it rewards a counterintuitive behavior: showing less taxable income. Understanding the mechanics is what separates a $25,000 premium year from a $6,000 one.
The subsidy is built around a benchmark — the second-lowest-cost Silver plan in your area. The government calculates the most you should have to pay for that benchmark plan as a percentage of your income, and the premium tax credit covers the rest. The lower your income (down to a floor), the smaller your expected contribution and the larger your credit. That credit can be applied in advance to lower your monthly premium directly.
Eligibility and size are driven by your income measured against the Federal Poverty Level (FPL):
| Income (% of FPL) | What it generally means for coverage |
|---|---|
| Below ~138% | Medicaid in states that expanded it; little or no marketplace subsidy needed |
| ~138%–250% | Largest premium subsidies plus cost-sharing reductions (lower deductibles) on Silver plans |
| ~250%–400% | Meaningful premium subsidies; no cost-sharing reductions |
| Above 400% | Historically the "subsidy cliff" — but see the caveat below |
The middle band — roughly 150% to 250% of FPL — is the genuine sweet spot for early retirees, because it combines strong premium credits with cost-sharing reductions that quietly slash deductibles and out-of-pocket maximums on Silver plans. Hitting that band on purpose is one of the highest-return planning moves available in the bridge years.
The Subsidy Cliff — and Why You Must Check the Current Year's Rule
Historically, earning even one dollar over 400% of FPL eliminated the entire premium tax credit — a true cliff where a tiny income increase could cost a household thousands in lost subsidy. Legislation in recent years temporarily replaced that cliff with a smoother cap (limiting the benchmark premium to 8.5% of income above 400% FPL). Whether that enhanced structure remains in effect for the current plan year depends on whether Congress extended it — these provisions have had hard expiration dates. Never plan a bridge-year income strategy without confirming whether the cliff applies this year. The difference between "smooth slope" and "hard cliff" completely changes how aggressive you can be near the 400% line.
Your Income Is the Dial: Managing MAGI
Here's the part that turns insurance shopping into financial planning. ACA subsidies are based on your Modified Adjusted Gross Income (MAGI) — and in early retirement, you have far more control over MAGI than most people realize.
For ACA purposes, MAGI is your adjusted gross income plus a few add-backs: tax-exempt interest, untaxed foreign income, and the non-taxable portion of Social Security benefits. What matters most is what doesn't inflate it. Specifically, the accounts you draw from determine your MAGI:
- Roth withdrawals (qualified) — do not count toward MAGI. A dollar of spending funded from a Roth account is invisible to the subsidy formula.
- Traditional IRA/401(k) withdrawals — count fully. Every dollar pulled from a tax-deferred account raises MAGI dollar-for-dollar.
- Long-term capital gains and dividends — count, but you control when to realize gains, and the basis portion of a brokerage withdrawal isn't income at all.
- Cash and money-market principal — spending down cash savings doesn't create MAGI.
This is why the sequence in which you fund early-retirement spending matters so much. A retiree who spends from a blend of cash, brokerage basis, and Roth dollars can hold MAGI down in the subsidy sweet spot while still living comfortably — funding a $70,000 lifestyle on $35,000 of reportable income. The same lifestyle funded entirely from a traditional IRA would show $70,000+ of MAGI and forfeit much of the subsidy. (This is the same machinery covered in Withdrawal Sequencing: Which Accounts to Tap First, applied specifically to the ACA window.)
Build a Roth and Cash Runway *Before* You Retire Early
The retirees with the most ACA flexibility are the ones who arrived at early retirement with meaningful Roth and taxable balances to draw from. If early retirement is a few years out, every dollar you can route into Roth accounts and a cash/brokerage buffer now becomes a dollar you can spend without raising MAGI later. Pre-retirement Roth contributions and conversions are, in effect, a down payment on cheaper health insurance.
The Roth Conversion Tug-of-War
There's a genuine tension in the bridge years that catches even sophisticated planners, and it deserves its own discussion.
The years between retirement and the start of Social Security and RMDs are often described as the golden window for Roth conversions — your taxable income is low, you may be in the 10% or 12% bracket, and converting traditional dollars to Roth at those rates is one of the best long-term tax moves available. (See Understanding Roth Conversions.)
But a Roth conversion raises MAGI — the very number that governs your ACA subsidy. So in the pre-65 window, the conversion strategy and the subsidy strategy pull in opposite directions: every dollar you convert can shrink your premium tax credit, sometimes at an effective marginal cost far higher than the income-tax bracket alone suggests. A conversion taxed at 12% might also cost you 15 cents of lost subsidy per dollar, turning the real marginal rate into something closer to 27%.
There's no universal answer — only a calculation. For some households, preserving a large ACA subsidy is worth more than the conversion. For others — especially those facing a severe future RMD problem — converting through the subsidy is still the right call. The point is that the two decisions must be modeled together, in the same plan, year by year. Optimizing either one in isolation reliably produces the wrong answer.
The Cliff Makes Conversions Especially Dangerous Near 400% FPL
If the hard subsidy cliff is in effect, a Roth conversion that nudges you from 399% to 401% of FPL can vaporize your entire premium tax credit — turning a few thousand dollars of conversion into a five-figure mistake. When the cliff applies, conversions in the bridge years must be sized with surgical precision against your FPL line. This is exactly the kind of interaction the IRMAA cliff article describes for Medicare years — the ACA version arrives a decade earlier.
Watch the Floor, Too: Don't Fall Into Medicaid Unintentionally
Most bridge-year planning focuses on keeping income down for subsidies, but there's a floor as well. In states that expanded Medicaid, income below roughly 138% of FPL routes you into Medicaid rather than a subsidized marketplace plan. That may be fine — or it may not be, if your preferred doctors don't accept it or you want a specific plan network.
In states that did not expand Medicaid, there's a notorious coverage gap below 100% FPL where you may be ineligible for both Medicaid and marketplace subsidies. The practical upshot: early retirees managing MAGI downward should know exactly where their state's floor sits and deliberately keep income above the marketplace-subsidy threshold (often by realizing a bit of intentional income, like a small Roth conversion or capital gain) if a marketplace plan is the goal.
A Note on HSAs and Premiums
Health Savings Accounts are a powerful early-retirement asset, but the rules on paying premiums are specific and easy to get wrong:
- HSA funds can pay COBRA premiums and, once you're 65+, most Medicare premiums (Parts B, D, and Advantage — but not Medigap).
- HSA funds generally cannot pay ACA marketplace premiums tax-free.
- HSA funds can always pay deductibles, copays, and other qualified out-of-pocket costs — which is exactly where a high-deductible bridge plan tends to hurt.
A well-funded HSA is therefore best aimed at the out-of-pocket side of a bridge plan and at COBRA premiums, while the marketplace premium itself is managed through subsidies rather than HSA dollars.
Don't Forget the Hand-Off to Medicare at 65
The bridge ends at 65, and the transition has its own trap: your Initial Enrollment Period for Medicare is a seven-month window around your 65th birthday, and missing it can trigger lifelong late-enrollment penalties on Parts B and D. Marketplace coverage does not roll over into Medicare automatically, and ACA subsidies end once you're Medicare-eligible. Plan the enrollment months deliberately so you don't end up either double-covered or briefly uncovered. And remember that the income game doesn't end — it simply changes uniforms, because two years before each Medicare year, your MAGI starts determining your IRMAA surcharges instead of your ACA subsidy.
Common Mistakes in the Bridge Years
- Defaulting to COBRA without pricing the marketplace. COBRA is easy and familiar, which is exactly why people overpay for it for years when a managed-MAGI marketplace plan would have cost a fraction.
- Funding spending entirely from a traditional IRA. This inflates MAGI and forfeits subsidies in the one stretch of life where they're easiest to capture. Blend in Roth and brokerage-basis dollars.
- Converting Roth dollars on autopilot. "Convert aggressively in the gap years" is good advice — until it collides with the subsidy formula. Model the two together.
- Estimating income too low and owing it back. Advance premium tax credits are reconciled on your tax return. Underestimate your MAGI and you'll repay the excess subsidy at filing. Update the marketplace when income changes.
- Ignoring the cliff's on/off status. Planning near 400% FPL without confirming whether the hard cliff applies this year is how a careful retiree backs into a five-figure surprise.
- Forgetting state-specific floors and rules. Expansion status, Medicaid thresholds, and even subsidy structures vary by state. National rules of thumb get the details wrong.
The Bottom Line
The pre-Medicare years are not a problem you shop your way out of — they're a problem you plan your way through. The marketplace gives you a policy that can't be denied for health reasons and whose price you can actively manage; COBRA and a spouse's plan are valuable tools for specific situations; and your retirement income is the dial that sets the whole cost. Retirees who arrive at early retirement with Roth and taxable balances to draw from, who sequence their withdrawals deliberately, and who model Roth conversions against ACA subsidies in the same plan routinely cut their bridge-year healthcare costs by tens of thousands of dollars over the full stretch to 65.
The households that struggle are the ones who treat health insurance as a fixed bill to be paid rather than a variable cost to be engineered. In the bridge years, it is firmly the latter.
How RetirementForge Helps
The ACA Subsidy Analyzer lets you model premium tax credits across a range of MAGI targets, so a client can see exactly where the subsidy sweet spot and the cliff sit for their household and plan year. Pair it with the Roth Conversion Analyzer to run the bridge-year tug-of-war directly — converting through the subsidy versus preserving it — and quantify the real combined marginal rate on every conversion dollar. Use the Withdrawal Planner to build a MAGI-aware funding sequence from cash, brokerage, and Roth balances, and the IRMAA Calculator to extend the same income-management discipline into the Medicare years that follow. Every scenario is reproducible, every assumption is documented, and every client session is captured in an immutable audit trail for compliance. Get started free and turn the five-year coverage gap from a budget shock into a planned, optimized stretch of your client's retirement.
This article is for educational purposes only and does not constitute financial, tax, insurance, or legal advice. ACA premium tax credits, the subsidy cliff, Federal Poverty Level thresholds, Medicaid expansion, COBRA, HSA, and Medicare rules change frequently and vary by state and plan year — several provisions discussed here have statutory expiration dates. Confirm the rules in effect for your situation and year before acting, and consult a qualified financial advisor, tax professional, or licensed insurance agent for guidance specific to your circumstances.