The best 12-month certificate of deposit rates are still sitting near 5% at a handful of online banks, and that headline number is doing a lot of heavy lifting in ads right now.
It looks like free money next to a regular savings account paying 0.4%.
But that 5% comes with fine print that most depositors never read until it costs them.
If you lock $10,000 into a 12-month CD at 5%, you'll earn roughly $500 before taxes.
Interest is taxed as ordinary income, so a household in the 22% bracket hands back about $110 of that.
Your real gain lands closer to $390, and only if you leave every dollar untouched for the full term.
Break the term early and the penalty can wipe out most of your earnings.
A typical early withdrawal penalty is three to six months of interest.
On that same $10,000 CD, pulling out after four months could cost you $125 to $250, which means you might walk away with less than a plain savings account would have paid.
The bigger problem is what happens after the term ends.
Most banks automatically renew your CD into whatever rate they're offering that day, and renewal rates are consistently lower than the promotional rate you signed up for.
If you don't set a calendar reminder for the maturity date, your money can quietly roll into a 2% CD for another year while you assume it's still earning 5%.
The Federal Reserve has been signaling rate cuts, and CD rates track those moves with a lag.
The 5% offers you see today may be gone in a few months, but locking in for 24 or 36 months at a lower rate just to chase certainty can leave you stuck below what short-term Treasuries or a high-yield savings account pays later.
Keep emergency money in a high-yield savings account where you can reach it without a penalty.
Use a CD only for cash you genuinely won't touch for the full term, and shop beyond your current bank, since loyalty almost never earns you the top rate.
Compare at least three institutions, check the early withdrawal penalty language, and note the automatic renewal clause before you sign.
One more thing worth checking: deposit insurance limits.
The standard coverage is $250,000 per depositor, per bank, per ownership category.
If you're spreading a large sum across CDs, verify each institution's coverage rather than assuming every account is fully protected.
They're a legitimate tool for a specific job, and today's rates are genuinely better than anything savers saw for most of the last decade.
It's signing up for a promotional rate and then forgetting about it, which is exactly what the banks are counting on.
Treat the maturity date like a bill you have to pay attention to, and set a reminder for a week before.
The savers who get burned are rarely the ones who did the research.
Final Thoughts
They're the ones who did the research once, then let autopilot take over.