The retirement cost most plans leave out.

Health care is the expense retirees underestimate most, partly because Medicare is assumed to handle it and partly because the costs arrive as a stream of premiums and surcharges rather than one bill. The guides below cover what the coverage actually costs, how your income can raise your premiums, and how to bridge the gap if you retire before 65. When you want to see how a rising medical expense reshapes your plan, the calculator models it directly.

Why health care needs its own line in the plan

Most retirement budgets fold health care into general spending, which hides two things that make it different. It rises with age rather than tapering off like travel and dining, and part of it is tied to your income through Medicare's surcharges, so the same medical need can cost two retirees very different amounts. Treating it as its own category, with its own growth rate, is the only way to size it honestly.

Medicare covers a lot, but not all of it

Original Medicare pays for hospital stays (Part A) and doctor visits (Part B), but it carries premiums, deductibles, and coinsurance, and it leaves out dental, vision, hearing, and long-term care entirely. Filling those gaps with a Medigap or Medicare Advantage plan and a Part D drug plan is where much of the real cost lives. Our guide to what health care costs in retirement walks through each piece and the widely cited Fidelity estimate.

Income can quietly raise your premiums

Medicare's income-related surcharge, IRMAA, means a large withdrawal, a Roth conversion, or a required minimum distribution can lift your Part B and Part D premiums two years later. Because the surcharge is a cliff, crossing a threshold by a single dollar can cost hundreds. That interaction ties health care planning directly to your withdrawal strategy, which the calculator models in a tax-aware order.