Yesterday, we talked about fixed annuities—how they’re quietly making a comeback and helping retirees create guaranteed income in uncertain times. But no matter how solid your monthly income is, there’s one threat that can blow up your retirement plan overnight: unexpected healthcare costs.

Most Americans think Medicare has them covered once they hit 65. But here’s the brutal truth: it doesn’t cover everything. In fact, there are massive gaps—and if you’re not planning for them now, you could end up draining your savings just to stay alive.

Let’s start with the basics. Medicare Part A covers hospital stays. Part B handles outpatient services. Part D helps with prescription drugs. Sounds decent, right? Until you realize that dental care, vision, hearing aids, and long-term care aren’t fully covered—or covered at all in many cases. And those aren’t luxuries. They’re essentials, especially as you age.

What’s worse is the fine print. Medicare comes with premiums, deductibles, and copays. If you’re not tracking those carefully, they can eat through thousands of dollars a year—especially if you get sick or need ongoing care. And if your income is even modestly above the threshold, you could end up paying more in premiums than you expected, thanks to something called IRMAA (Income-Related Monthly Adjustment Amount). It’s the government’s way of taxing you for “doing too well.”

Then there’s the elephant in the room—long-term care. Whether it’s assisted living, in-home support, or nursing home care, Medicare won’t foot the bill for extended stays. That’s where people get crushed. A year in a nursing home can easily cost $100,000 or more—and Medicaid won’t step in unless you’ve burned through most of your assets.

So how do smart retirees prepare? The key is planning early—before the health problems start. Some invest in hybrid long-term care insurance policies that combine life insurance with care coverage. Others use Health Savings Accounts (HSAs) while they’re still working to build tax-free savings specifically for medical expenses. And increasingly, retirees are looking at supplemental Medicare plans—Medigap or Medicare Advantage—to plug the holes.

But even those solutions come with tradeoffs. Premiums for Medigap can be high. Medicare Advantage plans can restrict your choice of doctors. And long-term care insurance? It gets more expensive the longer you wait to buy it. That’s why you can’t afford to be passive.

The elites? They pay cash or set up trusts. The rest of us need to outthink the system. And that starts with facing the fact that Medicare is not “free healthcare.” It’s a patchwork safety net with serious limitations—and if you don’t build backup strategies now, you may find yourself at the mercy of a system that wasn’t built to protect your future.

Tomorrow, we’ll look at one of those backup strategies in more detail—how retirees are using HSAs even after 65 to lower their tax burden and build a cushion against rising medical costs.