The Credit Ledger You locked a CD when rates were lower, and now new CDs are paying noticeably more. The question of breaking a CD early for a higher rate sounds like a judgment call, but it is not. It is one inequality with three numbers you already have: your old rate, the new rate, and the penalty. This guide gives you the formula, two worked examples with real dollars (one marginal yes, one clear no), the tax footnote that quietly shrinks the penalty, and the alternatives worth checking before you break anything.
One distinction first. If your CD matured and quietly rolled into a new term at a worse rate, you are in a different and often better position, because auto-renewals usually come with a short grace window. That case has its own playbook: what to do when a CD auto-renews at a lower rate. This article is for the harder case, a CD that is still mid-term with real months left on the clock.
Want the answer without the algebra? Plug your CD into our interactive CD early withdrawal calculator.
The break-even formula
Breaking a CD early costs you a penalty. Moving to a higher rate earns you extra interest for the months that remain. Break the CD only if the second number beats the first.
Break the CD if: (New rate - Old rate) x Remaining term > Penalty
In dollars, on a balance B:
Extra earnings = B x (new rate - old rate) x (months left ÷ 12)
Penalty cost = B x old rate x (penalty months ÷ 12)
Two details people miss:
- The penalty is charged at your old CD’s rate, not the new one. A low-rate CD is cheaper to break than a high-rate one, which is convenient, because the low-rate CD is exactly the one you want out of.
- The gain only runs for the months you had left. A big rate jump with two months to maturity is worth almost nothing. A modest jump with two years left can be worth a lot.
This is the same logic as our annual fee break-even math: ignore the headline number, price the edge over your real alternative, and compare it to the fixed cost of switching.
What the penalty typically looks like
Federal rules only set a floor, at least seven days of simple interest for very early withdrawals. What banks actually charge is far more, and it scales with the CD’s term. Across major online banks, schedules commonly land near these tiers (verify against the issuer’s current terms, since every bank sets its own and some run materially higher or lower):
| CD term | Typical penalty |
|---|---|
| Under 12 months | Around 3 months of interest |
| 1 to 3 years | Around 6 months of interest |
| 4 to 5 years | Around 9 to 12 months of interest |
Some large banks charge as little as 60 days on short terms; others charge a full year of interest on long ones. The penalty is almost always simple interest on the amount withdrawn, at the CD’s rate. And if you break the CD before you have earned enough interest to cover it, the difference usually comes out of your principal, which is the one way a CD can hand you back less than you put in.
Worked example 1: a marginal yes
You hold $25,000 in a CD paying 3.00%, opened when rates were soft. It has 14 months left. New CDs of a similar term are paying 4.40%, and your bank charges 6 months of interest to break a CD of this length.
| Input | Value |
|---|---|
| Balance | $25,000 |
| Current CD rate | 3.00% |
| Months to maturity | 14 |
| Penalty | 6 months of interest |
| New CD rate | 4.40% |
Run the two sides:
- Penalty cost: $25,000 x 3.00% x 6/12 = $375
- Extra earnings: $25,000 x 1.40% x 14/12 = $408
Net result: about $33 ahead over 14 months. That is a yes, but a marginal one. A few days of lost interest while the money moves between banks, or a new rate that is really 4.30% by the time you fund it, and the gain evaporates. A marginal yes is a real yes only if the switch is quick and the new rate is locked. (These figures use simple interest to keep the comparison clean; compounding nudges both sides up slightly and rarely changes the verdict.)
Now change one number: make it 24 months left instead of 14. Extra earnings become $25,000 x 1.40% x 24/12 = $700 against the same $375 penalty, and the marginal yes turns into a comfortable one. Remaining term is the lever that matters most.
Worked example 2: a clear no
You hold $10,000 in a CD paying 3.50% with 8 months left. New CDs are at 4.00%, and the penalty is 6 months of interest.
| Input | Value |
|---|---|
| Balance | $10,000 |
| Current CD rate | 3.50% |
| Months to maturity | 8 |
| Penalty | 6 months of interest |
| New CD rate | 4.00% |
- Penalty cost: $10,000 x 3.50% x 6/12 = $175
- Extra earnings: $10,000 x 0.50% x 8/12 = $33
Net result: about $142 behind. The rate gap is too small and the runway is too short. Here the right move is to do nothing until maturity, then redeploy deliberately, whether that is a better CD, or rebuilding the structure described in our CD ladder vs HYSA breakdown so future rate moves are decisions instead of emergencies.
The tax footnote that softens the penalty
An early withdrawal penalty is one of the few bank fees the tax code helps you with. The bank reports it in Box 2 of your Form 1099-INT, and you deduct it as an adjustment to income on Schedule 1 of Form 1040, line 18, the “penalty on early withdrawal of savings” line. It is an above-the-line deduction, so you get it even with the standard deduction, and you can deduct the full penalty even if it exceeds the interest the CD paid you that year (verify the line number against the current year’s form).
In practice this means the $375 penalty in the first example costs a 22% bracket saver closer to $293 after tax. It does not change the formula’s verdict often, but in marginal cases it adds a small cushion on the side of switching. You still report the full Box 1 interest as income either way.
Check these alternatives before you break
The formula answers “is it worth it.” These three checks answer “is there a cheaper path.”
- A partial withdrawal, if your bank allows it. Many CDs are all-or-nothing: taking anything out early means closing the whole certificate. Some banks do permit partial withdrawals with the penalty charged only on the amount removed. Read your account agreement, because if partials are allowed, you can move just enough to capture the better rate where the math clears.
- A no-penalty CD for the replacement. If you break a CD to chase today’s rate, you may face this same decision again next quarter. Rolling the proceeds into a no-penalty CD, usually at a slightly lower rate than a standard CD, buys you the option to move again for free.
- Simply waiting. With only a few months left, the penalty almost always wins, as example two shows. Set a calendar reminder for the maturity date and the grace period, because the silent enemy is not the penalty, it is letting the CD auto-renew into a below-market rate and restarting the clock.
Do not chase 0.2% differences
The formula is honest, but it does not capture friction: the transfer takes days during which the money earns nothing, the new bank’s advertised rate can change before funding, and you spend an evening opening an account and moving cash. Those costs are small, but so is the prize on a thin rate gap. On $25,000, a 0.20% edge for a year is $50 before any penalty. As a working rule, do not run the numbers at all unless the new rate beats your old one by at least 1 percentage point or your remaining term is long. Below that, the spread rarely survives the penalty plus the friction.
Bottom line
Breaking a CD early for a higher rate is worth it when the extra yield, applied over the months you have left, is clearly larger than the penalty, which is charged in months of interest at your old, lower rate. Big rate gaps with long runways clear the bar easily. Small gaps and short runways never do. Run the two-line math, take the Schedule 1 deduction if you break, check whether a partial withdrawal or a no-penalty replacement gives you a cheaper path, and when the answer is “wait for maturity,” guard the maturity date so the decision stays yours.