Healthcare Bridge Cost Estimator

What does it cost to retire before 65? Often far more than people guess, because they forget the years they have to buy their own health insurance before Medicare kicks in. That gap is the healthcare bridge, and for an early retiree it can be the single biggest line in the budget.

Retire at 60 and you’ve got five years to cover before Medicare starts at 65. Retire at 62, three years. Someone has to pay for coverage in that window, and that someone is you. The question this tool answers is simple and the number is usually sobering: what’s the total cost to bridge from your last day of work to your Medicare card?

The decision this settles

Most people fixate on whether their portfolio can fund their lifestyle and skip the bridge entirely. Then they price COBRA or a marketplace plan and the early-retirement date suddenly looks a year or two further away. The bridge is the cost of the freedom to leave early. Knowing it before you give notice is the difference between a confident exit and a panicked re-hire.

You’re choosing among a few paths, each with its own price and its own catch. COBRA continues your employer plan, usually for up to 18 months, at the full unsubsidized premium. The ACA marketplace sells individual coverage and, crucially, prices your subsidy off your income. A spouse’s active employer plan, if one exists, is often the cheapest bridge of all.

How the math works

The estimate is a stack of annual costs across the gap years.

• Years to bridge. Medicare eligibility age (65) minus your retirement age. Run it per person, since spouses rarely turn 65 the same month.
• Annual premium. What the chosen plan charges per year, for everyone not yet on Medicare.
• Out-of-pocket exposure. Deductibles, copays, and the plan’s out-of-pocket maximum. Budget closer to the max than the minimum if anyone has ongoing care.
• The subsidy variable. On a marketplace plan, a premium tax credit can cut the cost sharply, and it’s tied to your modeled income for the year.

Total bridge cost = (annual premium + expected out-of-pocket) × bridge years, adjusted for any subsidy.

A worked example

Take a couple, both 62, retiring now with three years until Medicare. Say a marketplace plan runs them $30,000 a year in premiums before any subsidy, with another $8,000 in expected out-of-pocket costs.

$38,000 × 3 years = $114,000 to bridge both of them to 65.

That’s $114,000 the plan has to fund on top of normal living expenses, and it’s why the bridge can push a retirement date.

Now the catch most people walk straight into. That marketplace subsidy is calculated on your income, so the Roth conversions and capital gains you’d normally harvest in a low-income early-retirement year can shrink or erase the credit. Fill your income up to do tax planning and you may hand back thousands in lost subsidy. The healthcare bridge and your tax plan are the same decision wearing two hats.

The part most people miss

There’s a third-order move hiding here that the obvious framing misses. The same income that governs your ACA subsidy in your early 60s starts governing your Medicare premiums at 65, through IRMAA, the income-based surcharge that looks back two years. So a big income year at 63 doesn’t just cost you a subsidy that year. It can raise your Medicare premiums at 65. The bridge years and the Medicare years are linked by the income you report, and a plan that treats them as separate problems leaves money on the table in both.

The way to win this is to model the whole stretch at once. Map the Medicare enrollment timeline, price the bridge, and decide your income deliberately in every year between your last paycheck and your first Medicare premium. Do that and the bridge stops being the thing that scares you out of an early exit. It becomes a number you’ve already paid for on paper, years before the first premium is due.