Nobody throws you a party for this one.
But on your 65th birthday, your HSA quietly levels up. Same account. Same balance. Same login page you have definitely forgotten the password to. The rules just changed, and they changed in your favor.
Here is what it looked like before.
Your HSA was a strict little vault. Medical expenses only. Step one inch outside that line and the IRS charged you a 20% penalty plus regular income tax on whatever you pulled out. Rough.
Now here is what it looks like at 65.
That 20% penalty disappears. Completely. Gone.
Your HSA can still pay medical bills tax free, forever. It can pay your Medicare premiums tax free. And if you want to use it for a new water heater or a week in Lisbon, you can do that too. You will owe ordinary income tax on the Lisbon money, but no penalty, no lecture, no problem.
In other words, at 65 your HSA stops being a medical account with a leash and starts being the most flexible account you own.
Let's break down exactly what you can spend it on, what it costs you, and the three mistakes that quietly drain thousands from people who never read the fine print.