What Happens When a CD Matures: Auto-Renewal, Grace Periods, and Your Notice Rights

There's a real federal clock that starts ticking before your CD matures — and most people never see it, because the notice usually comes as a plain letter or email from the bank that's easy to skim past. Regulation DD, the Truth in Savings rule, sets exact advance-notice windows before an automatically renewing CD rolls over, and a separate window for CDs that don't auto-renew. Knowing which window applies to your CD is what actually determines how much time you have to act before your money either re-locks at a new rate or, in some cases, stops earning interest altogether.

The 30-day-or-20-day rule for auto-renewing CDs

If your CD is set to automatically renew and its term runs longer than one month, Regulation DD § 1030.5(b) requires your bank to send a maturity disclosure using one of two timing options:

• At least 30 calendar days before maturity, or
• At least 20 calendar days before the end of a grace period — but only if that grace period runs at least 5 calendar days.

That second option is why some banks' notices arrive closer to the maturity date than 30 days out: they're using the alternate timing rule, which is only allowed if the grace period itself is long enough. The 5-calendar-day figure is the one hard federal minimum in this part of the rule — it's not the length of the grace period itself, just the floor a grace period has to clear for the bank to use the shorter, 20-day notice option.

What has to be in that notice differs slightly by term length. For CDs with an original term longer than one year, the bank must give the same account-opening-style disclosures required under § 1030.4(b) — including the account's maturity date — and if the new rate isn't set yet, it has to say so and give you a date and phone number to find out. For CDs a year or shorter (but still longer than one month), the bank has a lighter option: state the maturity date, the rate or APY if known, and any way the new term differs from the one you're in.

The 10-day rule for CDs that don't auto-renew

A different, shorter window applies if your CD does not automatically renew and its term is longer than one year. Under § 1030.5(c), the bank has to disclose the maturity date and whether it will keep paying interest after maturity if you don't withdraw — delivered at least 10 calendar days before maturity. This is a narrower disclosure than the auto-renewal notice (it doesn't require the full account-opening-style terms), but the core question it answers — does my money keep earning anything if I don't act right away — is exactly the one people search for when a CD is about to come due.

What if your CD's term is a month or less?

Short time deposits get a carve-out. Under § 1030.5(a)(2)(iii), accounts with maturities of one month or less are exempt from this advance-notice framework entirely — the regulation treats them as short enough that ongoing notice isn't required the same way. If you hold very short-term CDs, don't expect the 30/20/10-day structure above to apply; check your specific account's disclosure for how renewal actually works.

So how long is the actual "grace period"?

This is where a lot of coverage gets fuzzy, and it's worth being precise: Regulation DD does not set a fixed grace-period length. The only number the regulation specifies is the 5-calendar-day minimum a grace period must meet for your bank to use the 20-day-notice option instead of the 30-day one. Beyond that floor, the actual length — commonly cited around a week to ten days in general banking commentary — is set by your bank's own CD terms, not by federal law. The OCC's own consumer-guidance page confirms this directly: "You may have a grace period to decide whether to renew or withdraw the funds," with the specific length left to the account agreement. Check your CD's disclosure — the one you got at opening, or its current version on the bank's site — for the exact number that applies to you.

What happens if you do nothing

If your CD auto-renews and you take no action, the bank rolls your funds into a new CD once the grace period ends, at whatever rate is currently being offered — not the rate you originally locked in. The OCC's guidance is direct on this: the new CD's rate "would be at the current rate offered," which could be higher or lower than what you were earning. If your account terms don't include automatic renewal, what happens to an unclaimed matured CD depends on the bank's disclosure — some continue paying some rate of interest until you act, others don't, and the § 1030.5(c) notice is specifically supposed to tell you which applies before you get there.

Before your CD matures

A few things worth knowing ahead of the notice, not after:

• Check whether your CD auto-renews — it's in the disclosure from account opening, and it determines whether the 30/20-day rule or the 10-day rule applies to you.
• Read the maturity notice when it arrives, especially if it's a physical letter — it's the document telling you your actual grace-period length and, for many CDs, whether a new rate is already set.
• Decide before the grace period ends if you want to withdraw, move to a different term, or shop other places to park the cash instead of letting it auto-renew at whatever rate the bank is currently offering. Note that the notice windows above are about the maturity/renewal decision — if you need to break a CD mid-term instead, that's a different rule, covered in our CD early withdrawal penalty guide.
• A CD ladder is one way to reduce how often you're facing this decision on your whole balance at once — see our guide on CD laddering for the mechanics.

ClearValue Banking is a publisher and comparison resource, not a bank — we don't hold deposits, set any institution's renewal terms, or determine a specific CD's grace-period length. The notice timelines above come from Regulation DD itself; your bank's actual disclosure is what governs your specific account.