FIRE Healthcare Checklist: Everything to Arrange Before You Retire

Healthcare is the most complex part of early retirement planning — and the most dangerous to leave until the last minute. Lose employer coverage without a plan in place, and you could face a coverage gap, a missed subsidy, or a permanent Medicare penalty.

This is your complete, phase-by-phase healthcare checklist. Work through it in order, and you'll hit your retirement date fully covered, fully informed, and with no surprises.

Healthcare is unlike every other line item in a FIRE budget in one specific way: it's the one expense category where the coverage decision, the income decision, and the tax decision are all the same decision. How much you withdraw and from which account in a given year doesn't just affect your tax bill — it directly determines your ACA subsidy, which can swing your effective healthcare cost by thousands of dollars in either direction. Keep that connection in mind as you work through each phase below.

• Learn what your ACA income target should be Visit healthcare.gov's plan preview tool. Enter your expected retirement income at various levels to see how subsidies change. Identify the MAGI range that gives you the best premium-to-coverage ratio.
• Audit your income sources for MAGI impact List every source of retirement income — Roth withdrawals (don't count), traditional IRA/401k draws (do count), capital gains (do count), Social Security (partially counts). Map out your expected MAGI before you retire.
• Maximize HSA contributions while employed If you're on an HDHP, contribute the family or individual max every year until you leave your employer. These contributions reduce current taxable income and build your healthcare reserve tax-free.
• Start saving medical receipts now If you pay any medical, dental, or vision expenses out of pocket, save every receipt. HSA reimbursements have no deadline — expenses from today can be withdrawn tax-free in 20 years.
• Get major medical procedures done while employed Employer insurance typically offers lower out-of-pocket costs and broader networks. Schedule any elective procedures, dental work, vision correction, or specialist visits before your coverage ends.
• Research ACA plans in your target zip code If you're planning to move, check ACA plan options in your destination state. Premiums and plan availability vary dramatically by location — some areas have excellent, affordable options; others don't.
• Build a full pre-Medicare healthcare line item into your FIRE budget Add up the realistic annual total: premiums after subsidy, deductible exposure, copays, dental, vision, and any recurring prescriptions. For a couple in their 50s on a mid-tier ACA plan, $9,000–$14,000/year is a common realistic range — model this explicitly rather than folding it into a generic "miscellaneous" line.
• Weigh a final year on an HDHP against switching plan types If you're close to maxing your HSA lifetime contribution window, a last working year on a high-deductible plan can be worth thousands in extra tax-advantaged healthcare savings — but only if your actual medical needs that year don't push you into paying much more out of pocket than a richer PPO plan would have cost.

• Decide between COBRA and ACA for transition coverage If you retire in the first half of the year, COBRA may be worth it to get through a high-income partial year (from your salary). If you retire in November or December, ACA Open Enrollment may time perfectly.
• Understand your Special Enrollment Period Losing employer coverage triggers a 60-day SEP to enroll in an ACA plan. Know when your coverage ends and count 60 days forward — that's your enrollment deadline if you're not using COBRA.
• Check if your spouse's employer plan covers you If your spouse is still working, get specific: what does it cost to add you? Is it an HDHP (HSA-eligible)? Does their employer cover family premiums generously? This may be your best option.
• Budget healthcare costs in your FIRE model Enter realistic healthcare costs in your retirement calculator — not just premiums, but deductibles, copays, dental, and vision. $6,000–$15,000/year per household is a reasonable starting range.
• Research long-term care insurance The earlier you apply for LTC insurance, the cheaper and easier it is to qualify. Ages 55–65 are the sweet spot. Understand what you'd need it for and whether self-insuring (with portfolio assets) is a better alternative.
• Get your COBRA cost quote in writing before deciding COBRA continues your exact employer plan, but you pay the full premium plus up to a 2% administration fee — often $700–$2,000/month for a family, depending on your former employer's plan. Get the specific number from HR rather than estimating; the gap between COBRA and a subsidized ACA plan can be large enough to change your whole transition strategy.
• Check for state-based marketplace subsidies beyond the federal ones A handful of states run their own ACA marketplaces with additional state-funded subsidies stacked on top of federal ones, meaningfully lowering premiums for some income bands. If you're planning a retirement-driven move, this is worth checking for your destination state specifically — it can shift the math on where retiring is most affordable.

• Elect COBRA or enroll in ACA — do not have a gap There should be zero days between your employer coverage ending and your new coverage beginning. Even one uninsured day creates legal and financial risk.
• Get a full physical and prescription stock-up Use your employer insurance for a comprehensive physical, blood work, and to fill prescriptions with 90-day supplies before your coverage changes. Continuity matters.
• Roll your HSA if your employer's is mediocre Once you leave your employer, you're free to roll the HSA to a better provider (like Fidelity). You can do one trustee-to-trustee transfer per year without tax implications.
• Verify your ACA plan's network includes your doctors Before finalizing an ACA plan, confirm that your primary care physician, specialists, and any hospitals you use are in-network. This takes 15 minutes and can save thousands.
• Confirm your prescriptions are on the new plan's formulary Every ACA plan has its own drug formulary and tier pricing. A maintenance medication that cost $10/month on your employer plan could be $150/month — or simply not covered — on a different insurer's formulary. Check this before you enroll, not after your first pharmacy visit.
• Set a calendar reminder for your first premium payment deadline ACA coverage isn't active until the first premium is paid, and missing that first payment deadline can delay your effective coverage date. This is an easy detail to lose track of during a busy transition month — put it on the calendar the day you enroll.

• Update your ACA income estimate each November Open Enrollment runs November 1 – January 15. Review your expected next-year income and update your application. Under- or over-estimating income affects your monthly subsidy and year-end reconciliation.
• Compare plans annually — don't auto-renew blindly Insurers change premiums, networks, and formularies every year. The plan that was best this year may not be best next year. Spend 30 minutes in October comparing your options.
• Track medical expenses for HSA reimbursement Keep a running log (a simple spreadsheet works) of every medical expense paid out of pocket, with the date, amount, and receipt. This is your future tax-free withdrawal inventory.
• Reassess your plan tier based on actual usage, not habit A low-usage year is a signal to consider a higher-deductible, lower-premium plan next Open Enrollment; a year with significant medical needs is a signal to consider a richer plan. Don't auto-renew the same tier every year without checking whether your actual usage still matches it.
• Let HSA funds grow instead of spending them if cash flow allows If you can cover current medical costs from other income or savings, pay out of pocket and save the receipts rather than draining the HSA immediately. The HSA grows tax-free and the reimbursement can be claimed decades later — turning it into one of the most tax-efficient accounts available for a long retirement.

• Mark your Medicare enrollment window (3 months before birthday) Your Initial Enrollment Period starts 3 months before your 65th birthday. Begin the process at ssa.gov or medicare.gov at least 2–3 months before your birthday to avoid coverage gaps.
• Choose: Original Medicare + Medigap vs Medicare Advantage This is a major decision. Original Medicare + Medigap Plan G gives you predictable costs and no network restrictions. Medicare Advantage can be cheaper but has trade-offs. Choose during your Medigap open enrollment window — switching later is harder.
• Stop HSA contributions when you enroll in Medicare Once you enroll in Medicare Part A or B, you cannot make new HSA contributions. Stop contributing the month before your coverage begins. Existing HSA funds can still be used tax-free forever.
• Review prior 2 years' income for IRMAA impact Your Part B premium at 65 is based on your income from 2 years prior. If you had a high-income year (large Roth conversion, asset sale), you may owe IRMAA surcharges. Know this before your first Medicare bill arrives.
• Sign up for Part B on time even if you're still working If you're still employed past 65 but your employer plan isn't considered "creditable coverage" under Medicare rules (common at very small employers), delaying Part B enrollment can trigger a permanent late-enrollment penalty added to your premium for life. Confirm your employer plan's creditable status with HR before assuming you can safely delay.
• Use your Medigap open enrollment window carefully — it's a one-time right Your 6-month Medigap open enrollment period (starting the month you're both 65+ and enrolled in Part B) is the only guaranteed-issue window most people get — insurers can't deny coverage or charge more for pre-existing conditions during it. Miss it, and future Medigap applications can involve medical underwriting in most states.

Real Example: Healthcare Costs for an Early Retiree Couple

To make the numbers concrete, consider a couple retiring at 55 with 10 years to bridge before Medicare eligibility at 65. They're both in good health, earn no W-2 income after retirement, and manage their Modified Adjusted Gross Income (MAGI) carefully through a mix of Roth withdrawals (which don't count toward MAGI) and limited traditional 401(k)/IRA withdrawals.

Because their MAGI is deliberately kept low in the years before Medicare — mostly through Roth withdrawals, which don't count as income for ACA subsidy purposes — this couple qualifies for a substantial premium subsidy that a similarly situated couple drawing entirely from a traditional 401(k) would not. The same coverage without any subsidy, at full price, commonly runs $1,400–$1,800/month for a couple in their late 50s — a difference of well over $10,000/year, purely from how the withdrawal strategy is structured. This is why the "audit income sources for MAGI impact" step in Phase 1 above matters as much as the coverage decision itself: the withdrawal strategy and the healthcare cost are not separate problems, they're the same problem viewed from two angles.

Common Healthcare Mistakes FIRE Retirees Make

Most healthcare mistakes in early retirement aren't medical — they're structural, and they're avoidable with enough lead time. These are the ones that show up most often:

• Underestimating the deductible, not just the premium A low headline premium often comes with a high deductible. Budgeting only for the monthly premium and ignoring realistic annual out-of-pocket exposure is one of the most common ways early retirees underbudget healthcare by thousands of dollars a year.
• Letting a large one-time withdrawal spike MAGI and wipe out a subsidy A Roth conversion, a large capital gain, or a big traditional IRA withdrawal in the same year can push MAGI past a subsidy cliff, sometimes costing thousands more in premiums than the extra income was worth. Model the ACA impact before executing a large one-time transaction, not after.
• Assuming COBRA and ACA cost roughly the same They frequently don't. COBRA has no subsidy and includes an administrative fee; ACA plans can be heavily subsidized at the right MAGI level. Comparing the actual quoted numbers, not assumptions, is the only reliable way to choose.
• Missing the 60-day Special Enrollment Period deadline Losing employer coverage triggers a hard 60-day window to enroll in an ACA plan outside of Open Enrollment. Miss it, and you may be left without coverage until the next Open Enrollment period — a gap that can span months.
• Forgetting healthcare costs rise faster than general inflation Medical cost inflation has historically outpaced broader consumer inflation. A healthcare budget that isn't adjusted upward over a multi-decade retirement will understate real future costs, particularly in the years approaching Medicare eligibility.

How Healthcare Costs Change as You Age

Healthcare spending in retirement isn't flat — it follows a rough U-shape for many early retirees: moderate in the first few years of good health, dipping further if a spouse's employer plan becomes available, then rising steadily from the mid-50s onward as both ACA premiums (which increase with age, independent of health status) and actual utilization both climb.

The practical takeaway is that the 60–64 age band is usually the single most expensive period for healthcare in an entire FIRE plan — ACA premiums are age-rated up to their maximum multiplier just before Medicare eligibility kicks in and resets the entire cost structure. Retirees who model a flat healthcare number across their whole plan, rather than a number that rises through this specific window, tend to underbudget the years right before 65 by the widest margin.

Original Medicare + Medigap vs. Medicare Advantage

The Phase 5 decision between Original Medicare with a Medigap supplement and a Medicare Advantage plan is one of the most consequential choices in this entire checklist, and it deserves more than a passing mention. Both start with Medicare Part A (hospital) and Part B (medical) — the difference is what wraps around them.

Neither option is universally better — the right choice depends heavily on how much you value provider flexibility versus lower predictable monthly costs, and whether you plan to travel or relocate in retirement. What matters most procedurally is the timing: Medigap's guaranteed-issue window (Phase 5, above) is the point of maximum leverage. Choosing Medicare Advantage first and trying to switch to Medigap later, after that window has closed, can mean facing medical underwriting and potential denial in most states.

Frequently Overlooked Costs After 65

A detail that surprises many new Medicare enrollees: Original Medicare does not cover routine dental, vision, or hearing care. No cleanings, no glasses, no hearing aids, unless you add separate supplemental coverage or choose a Medicare Advantage plan that bundles these benefits in. For a household that has budgeted only for medical premiums, this gap can add $1,000–$3,000/year in costs that weren't in the original plan.

Long-term care is the other major gap. Neither Original Medicare nor most Medicare Advantage plans cover extended long-term custodial care (as opposed to short-term skilled nursing after a hospital stay, which Medicare does cover under specific conditions). This is precisely why the Phase 2 step of researching long-term care insurance in your mid-50s to mid-60s matters — by the time the need is close enough to be obvious, the affordable window to insure against it, or the health required to qualify, may already have passed.

The Bottom Line

Healthcare in early retirement is manageable — but it doesn't manage itself. The retirees who get it right spend a few hours planning before they leave, not scrambling after. This checklist covers every phase from pre-retirement prep to Medicare enrollment. Work through it in order and you'll arrive at each milestone ready.

The most expensive healthcare mistakes in early retirement are not medical bills — they're the structural ones: missed subsidy optimization, COBRA lapses, wrong plan selection, and delayed Medicare enrollment. This checklist protects you from all of them.

If there's one habit worth taking from this entire checklist, it's this: treat healthcare planning as an ongoing part of your retirement finances, not a one-time decision made in the months before you leave your job. Income sources, MAGI, plan pricing, and your own medical needs will all shift over a multi-decade retirement — the retirees who revisit this checklist every Open Enrollment season, not just once, are the ones who stay optimized instead of drifting onto whatever plan happens to auto-renew.