CD Q&A Author: Hans Goldstein, NPN 20602398 Last updated: 2026-06-27

CD Early Withdrawal Penalty Calculator — EWP Math Explained

TL;DR

The CD early withdrawal penalty (EWP) is calculated as: APY / 365 × principal × penalty days. The three common penalty windows are 90 days (terms under 1 year), 180 days (1-4 year terms), and 365 days (5+ year terms). The breakeven for breaking a CD: the new available rate must exceed the existing rate by enough to recoup the EWP within the remaining term. On a $100,000 5-year CD at 4.00% with 3 years remaining and a 365-day EWP, you need a new 3-year rate of approximately 5.20% to break even.

The EWP formula, plainly

Every bank's CD disclosure spells out the EWP as a number of days of interest. The math is identical across institutions:

EWP dollars = (APY ÷ 365) × principal × penalty days

Some examples on common 5-year CDs:

Principal	APY	EWP (90 days)	EWP (180 days)	EWP (365 days)
$25,000	4.55%	$281	$561	$1,138
$50,000	4.55%	$561	$1,122	$2,275
$100,000	4.55%	$1,122	$2,244	$4,550
$250,000	4.55%	$2,805	$5,610	$11,375
$500,000	4.55%	$5,610	$11,220	$22,750

Three EWP regimes by term

Short terms (3 to 11 months): 90 days

Most banks charge 90 days of interest on terms under 12 months. The penalty is small in absolute dollars because the term is short.

Mid terms (12 to 48 months): 180 days

The industry standard for 1- to 4-year CDs is 180 days of interest. This is the most common EWP you will encounter.

Long terms (5+ years): 365 days

Most institutions charge a full year of interest on 5-year and longer CDs. A few aggressive issuers charge 540 days (18 months) on 7- or 10-year CDs.

The principal-loss trap

Federal regulations allow banks to charge the EWP against principal if the accrued interest at the time of withdrawal is insufficient to cover the penalty. This is the single most-misunderstood CD risk.

Example. You open a 5-year CD at 4.55 percent for $100,000 with a 365-day EWP. After 6 months, you need to break it. Accrued interest to date: roughly $2,250. EWP: $4,550. The bank takes $2,250 of accrued interest plus $2,300 of principal. You walk away with $97,700.

The principal-loss trap is largest when:

You break the CD early in its term (less accrued interest to absorb the penalty).
The CD has a long EWP (365 days vs 90).
The CD pays a high rate (the EWP scales with APY).

The break-even decision: when breaking pays

Breaking a CD to capture a higher rate elsewhere only makes sense if the new yield exceeds the existing yield by enough to recoup the EWP within the remaining term.

The break-even formula:

New rate − existing rate > EWP ÷ (remaining principal × remaining years)

Worked example 1. You hold a 5-year CD at 4.00 percent with 3 years remaining and a 365-day EWP. Principal: $100,000.

EWP if broken: $4,000 (365 days of interest at 4.00%).
Break-even uplift: $4,000 ÷ ($100,000 × 3) = 1.33 percent.
You need a new 3-year rate of at least 4.00 + 1.33 = 5.33 percent to break even.

If a new 3-year CD or MYGA is available at 5.50 percent, breaking is a $510 net win over 3 years. At 5.10 percent, breaking costs $690 versus holding.

Worked example 2. You hold a 5-year CD at 2.50 percent (locked in 2021) with 6 months remaining and a 365-day EWP. Principal: $100,000.

EWP if broken: $2,500.
Remaining interest if held: $100,000 × 0.025 × 0.5 = $1,250.
Cost of breaking: $2,500 EWP − $1,250 forfeit = $1,250 net cost.
To break even on a new 5-year MYGA at 5.55%, you need $1,250 of additional yield. That is $250/year, which the MYGA produces ($5,550 vs $2,500 = $3,050 annual differential). Breaking pays in 5 months.

The tax-deductibility offset

The EWP is reported on Form 1099-INT (box 2) and deducted above the line on Schedule 1, line 18. This is an adjustment to gross income, not an itemized deduction, so you get the benefit regardless of whether you itemize.

For a $4,550 EWP in a 24 percent bracket, the after-tax cost is $4,550 × (1 − 0.24) = $3,458. This is real and meaningful, particularly for larger CDs where the EWP runs into five figures.

Adjusted break-even formula (after-tax):

New rate − existing rate > (EWP × (1 − tax rate)) ÷ (principal × remaining years)

What banks vary on (read the disclosure)

Days of interest: 90, 180, 365, 540, or rarely 720. Quoted in the deposit agreement.
Simple vs compound interest in the calculation: almost always simple, but verify.
APY at issue vs current APY: usually issue APY for the penalty calc.
Interest-only withdrawal: some banks allow penalty-free interest withdrawal; some do not.
Death waiver: most banks waive on depositor death; a few do not.
Disability waiver: rare but exists at some credit unions.
Required minimum distribution waiver: for IRA CDs, the EWP is often waived on RMD-amount withdrawals after age 73.

Where a MYGA differs structurally

MYGA surrender charges work differently from CD EWPs:

Sliding schedule: typically 7-6-5-4-3-2-1 percent over 7 years, declining each year.
Percentage of account value: applied to the accumulated value, not days of interest.
Plus MVA: market value adjustment can add or subtract based on rate movement since issue.
Penalty-free withdrawals: most A-rated MYGAs allow 10 percent annual penalty-free withdrawal starting year 2, which CDs do not offer.

On a 5-year MYGA broken in year 2 at $100,000: surrender charge 6 percent = $6,000, possibly offset or magnified by MVA. The 10 percent annual penalty-free allowance ($10,000) is available without surrender charge. Operationally, the MYGA is more flexible for partial withdrawals; the CD is more punitive on early total surrender at high rates.

For the strategic comparison, see our CD vs MYGA ladder analysis.

EWP checklist before opening any CD

Confirm the number of days of interest charged.
Confirm the penalty is calculated on accrued or principal (it should be accrued first, principal as fallback).
Confirm the death and disability waivers in writing.
Confirm whether interest can be withdrawn penalty-free during the term.
Confirm the RMD waiver if this is an IRA CD and you are near or over 73.
Model the break-even on your own spreadsheet before signing.

Related guides

Frequently asked follow-up questions

How is the early withdrawal penalty calculated?

The standard formula is APY divided by 365 multiplied by the principal multiplied by the number of penalty days. For a 5-year CD with 365-day EWP at 4.55 percent on $100,000, the penalty is $100,000 multiplied by 0.0455 equals $4,550.

Can the bank take my principal as a penalty?

Federal regulation Reg D and bank-specific contracts generally allow the bank to take principal if the accrued interest is less than the penalty. If you break a CD before enough interest has accrued to cover the EWP, you can lose principal.

What is the most common EWP for a 5-year CD?

180 days of simple interest is the most common 5-year EWP. Some banks charge 365 days for terms 4 years and longer; a few aggressive issuers charge 540 days on 7-year CDs.

Does the EWP apply if I die?

Most banks waive the EWP on death of the depositor. The CD passes to the named POD beneficiary or to the estate with full accrued interest, no penalty. Some institutions require death within X days of the request; read the deposit agreement.

Can I withdraw just the interest without penalty?

On many CDs, yes — most banks allow penalty-free interest withdrawal at any time, with the EWP only applying to principal withdrawals. Confirm in the deposit agreement; this is not universal.

Does breaking a CD ever make financial sense?

Yes, when the new available rate exceeds the existing rate by enough to overcome the EWP within the remaining term. The breakeven calculation is below.

How does the EWP compare to a MYGA surrender charge?

CD EWPs are interest-based (X days of interest). MYGA surrender charges are principal-based (a percentage of the accumulated value) that declines each year. On a year-2 surrender, the MYGA charge is typically 6 to 7 percent of value, larger than a typical 180-day CD EWP.

Is the EWP tax-deductible?

Yes. The early withdrawal penalty paid on a CD is deductible above the line on Schedule 1 of Form 1040, line 18. This reduces the after-tax cost of breaking the CD by your marginal rate.

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Disclosure

This article reflects publicly available CD, savings, and annuity rate information approximate to the date above. Rates change frequently — often weekly. Always confirm current rates directly with the institution before opening, renewing, or transferring. This is general educational content, not a personalized recommendation, solicitation, or offer of any specific product. Hans Goldstein is an independent licensed insurance producer (NPN 20602398) appointed with multiple A-rated carriers in the fixed-annuity market; Goldstein & Co. LLC is not a bank, broker-dealer, or registered investment adviser. CDs are deposit products of FDIC-insured banks or NCUA-insured credit unions; annuities are insurance contracts backed by the issuing carrier and state guaranty associations. FDIC and NCUA insurance limits are typically $250,000 per depositor per institution per ownership category. Tax discussion reflects federal law as of 2026 and is subject to change; consult a tax professional for your situation.