Splitting your money across CDs of staggered maturities — say 1, 2, 3, 4, and 5 years — so a portion matures every year. You capture longer-term rates while keeping regular access, and reinvest each rung at current rates as it matures.

How much interest do I actually lose withdrawing a CD early?

Often nearly all of it on a short hold. A $20,000, 5-year CD at 4.5% earns about $454 of interest in its first 6 months. A typical 6-month-interest early-withdrawal penalty of about $450 would leave only about $4 of net gain — barely better than not opening the CD at all.

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Q: How much does a CD earn?

Principal × APY, compounded to maturity. A $10,000 CD at 4.5% APY earns about $450 in one year, $921 over two years, and $1,412 over three, if interest stays in the CD.

Q: What happens if I withdraw a CD early?

You pay an early-withdrawal penalty, commonly 3-12 months of interest depending on the term. On short holding periods the penalty can exceed earned interest and eat into principal, so match the CD term to money you truly won't need.

Q: Does compounding frequency matter much for a CD?

Less than it might seem. $10,000 at 4.5% for 12 months yields $10,450 compounded annually, $10,458 quarterly, $10,460 monthly, and $10,460 daily — a spread of only about $10 across all frequencies, since CD terms are usually too short for frequency to compound into a large gap.

See exactly what a certificate of deposit will be worth at maturity — with interest compounded at your bank's schedule and the APY conversion handled for you.

Written by the Calculator Index team · Last reviewed September 2026

Value at maturity

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Interest earned

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Effective APY

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Equivalent monthly income

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How CD interest compounds

Value = Deposit × (1 + r/n)^n·t · APY = (1 + r/n)ⁿ − 1

Worked example

$10,000 in a 12-month CD at 4.5%, compounded monthly:

Value = 10,000 × (1 + 0.045/12)¹² = $10,459 → APY ≈ 4.59%

Worked example — the real cost of withdrawing early

A $20,000, 5-year CD at 4.5% (monthly compounding) is withdrawn after just 6 months. Balance at 6 months = 20,000 × (1.00375)⁶ = $20,454, so $454 of interest was earned.

The bank charges a typical 6-month-interest penalty: 20,000 × 0.045 × 0.5 = $450. Net result: $454 − $450 = only $4 of gain after 6 months of having the money locked up — illustrating why a CD term should genuinely match money you won't need.

How much compounding frequency matters

Compounding	$10,000 at 4.5% for 12 months
Annual	$10,450
Quarterly	$10,458
Monthly	$10,460
Daily	$10,460

Unlike a multi-decade investment, a CD's short term means compounding frequency barely moves the outcome — the entire spread here is about $10. When comparing CD offers, the stated rate and the APY matter far more than whether the bank compounds daily or monthly.

Common CD mistakes

Underestimating how much an early-withdrawal penalty erases. As shown above, a penalty calculated on 6 months of interest can consume nearly all the interest actually earned on a short hold.
Comparing CDs by stated rate instead of APY. Two CDs with the same stated rate but different compounding frequencies produce slightly different actual returns — APY is the number that already accounts for this.
Locking all your savings into one CD term. A single 5-year CD leaves no flexibility if rates rise or you need cash sooner; a CD ladder spreads that risk across staggered maturities.

CDs vs. high-yield savings vs. laddering

A CD pays a premium for a promise: your rate is locked, but so is your money — early withdrawals typically cost 3–12 months of interest. That makes CDs best for money with a known future date (a car purchase, tuition, a house down payment). If you might need the cash unpredictably, a high-yield savings account is safer even at a slightly lower rate. The classic middle path is a CD ladder — equal amounts in 1- through 5-year CDs, reinvesting each as it matures — which earns long-term rates while freeing up a rung every year. Compare all three against your timeline before locking in, and mind FDIC limits ($250,000 per depositor, per bank).

Frequently asked questions

How much does a CD earn?

$10,000 at 4.5% APY: about $450 in 1 year, $921 in 2, $1,412 in 3 (interest left to compound).

What happens if I withdraw a CD early?

A penalty of typically 3–12 months' interest — early exits can eat principal on short holds.

What is a CD ladder?

Staggered maturities (1–5 years) so a rung matures annually — long-term rates with yearly access.

How much interest do I lose withdrawing early?

Often nearly all of it. $20,000 at 4.5% earns ~$454 in 6 months; a 6-month-interest penalty (~$450) leaves only ~$4 net gain.

Does compounding frequency matter much for a CD?

Not much on a short term — $10,000 at 4.5% for 12 months differs by only about $10 between annual and daily compounding.

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Note: Assumes interest remains in the CD to maturity. Rates and penalty terms vary by institution. Not financial advice. Last reviewed: September 2026.