The Health Insurance Question That Quietly Kills Early Retirement Plans

Ask a room of people planning to retire early what worries them, and the answers cluster: markets, inflation, running out. Ask the ones who have actually done it, and a different answer comes up first.

Health insurance.

Medicare starts at 65. If you leave work at 55, you are buying ten years of your own cover. If you leave at 50, fifteen. And the cost is not a footnote — for a couple it can be the largest line in the early retirement budget, bigger than housing.

Most retirement calculators do not model this at all. They were built for someone retiring at 65, where the problem does not exist.

The arithmetic, roughly

Take a household paying $1,200 a month in premiums and another $4,000 a year in deductibles and copays. That is $18,400 a year. Retire at 55 and you need ten of those years:

$18,400 × 10 = $184,000

Except health costs have historically grown faster than general inflation, so the later years cost more than the earlier ones. Put even 2.5% real growth on it and the ten-year total lands closer to $206,000.

Now the part that actually matters for planning. You do not need $206,000 sitting in cash on day one. You need the present value of it, because the money for year nine has nine years to grow first. At 5% real, that is around $165,000 of portfolio, earmarked.

$165,000 is not a footnote. For a lot of households it is two to three extra years of work.

The counterintuitive bit: your premium depends on income you choose

Marketplace subsidies are calculated from modified adjusted gross income, not from net worth. This is the single most useful thing to understand about the bridge years.

An early retiree with $1.8M invested can report a genuinely low income, because selling shares only creates income to the extent of the gain, and withdrawing your own Roth contributions is not income at all. Two households with identical portfolios and identical spending can face very different premiums, entirely because of which accounts they drew from.

Which sets up the real tension. The years between retiring and 65 are also the best years to do Roth conversions, because your tax bracket is low. But a conversion is income, and income raises your premium or costs you a subsidy outright.

Optimising one of those in isolation almost always costs you more on the other. This is why “just do a Roth ladder” advice is incomplete for anyone retiring before 65, and it is the main reason the bridge deserves modelling rather than a rule of thumb.

Do not take a premium number from a blog

Including this one. Premiums depend on your state, your age, your household size and the income you expect to report, and the rules change between plan years. Any figure written down in September is a guess about a plan year that has not started.

Get a real quote. Healthcare.gov will price plans for your county at an income you specify, without an account. Do it at the income you expect in early retirement, not your current salary — the difference is usually large.

Then bring that number to the health insurance bridge calculator, which will tell you what the whole bridge costs and how much extra portfolio it needs.

Bronze or silver

The instinct is to buy the cheapest premium. Sometimes right, often not.

A bronze plan trades premium for deductible, which suits a healthy household with cash to absorb a bad year. Silver plans can carry cost-sharing reductions at lower incomes that bronze plans cannot, and at some income levels that reverses the answer completely.

Compare the total — premium plus realistic out-of-pocket — rather than the monthly figure. A plan that is $200 cheaper a month and $6,000 worse on the deductible is not cheaper.

The one thing to do

Price your bridge before you set your FIRE number, not after. Bolting $165,000 onto a plan you already committed to is how a retirement date slips by three years in a single afternoon. Building it in from the start costs nothing but honesty.