Credit Card Grace Period Rules: Where It Is Disclosed and What Partial Payments Protect

Published by the Modern Lending Solutions editorial team. Last reviewed: October 30, 2026.

Short answer: a grace period is the time in which you can pay a credit card balance without interest. No federal law requires a card to have one, but if your card has one, the issuer must tell you about it before you open the account, in your account opening papers and on every statement. If you lose it, the issuer cannot charge interest for days in earlier billing cycles, or on the part of the balance you paid in time. This is general information, not legal or financial advice.

What a grace period is, and why no law requires one

Regulation Z defines a grace period as “a period within which any credit extended may be repaid without incurring a finance charge due to a periodic interest rate” (12 CFR 1026.5(b)(2)(ii)(B)(3), eCFR, text up to date as of October 28, 2026, read October 30, 2026). The CFPB says: “Credit card companies are not required to give a grace period. However, most credit cards provide a grace period on purchases” (CFPB, page last modified September 25, 2024, read October 30, 2026). The official interpretation of Regulation Z says 1026.54 “does not require the card issuer to provide a grace period” (Official Interpretation, comment 54(a)(1)-1). So whether you have one, and on which balances, is set by your card agreement. The CFPB adds that grace periods “typically apply only to purchase transactions”, and that for a cash advance “generally you must start paying interest as of the date of the transaction”.

Where the grace period must be disclosed

If a card has a grace period, three Regulation Z rules make the issuer show it to you. If it has none, the first two say that fact must be disclosed.

When	What must be shown	Rule
Application or solicitation	The period in which purchases may be repaid without interest and any conditions, under the heading “How to Avoid Paying Interest on Purchases”; if there is no grace period, that fact	12 CFR 1026.60(b)(5), eCFR
Account opening	The period in which any credit extended may be repaid without interest and “any conditions on the availability of the grace period”; if there is no grace period, “that fact must be disclosed”	12 CFR 1026.6(b)(2)(v), eCFR
Every periodic statement	“The date by which or the time period within which the new balance or any portion of the new balance must be paid to avoid additional finance charges”	12 CFR 1026.7(b)(8), eCFR

If the length varies, the issuer may give a range, a minimum or an average, labeled as such (1026.6(b)(2)(v) and 1026.60(b)(5)). All three rules read in eCFR text up to date as of October 28, 2026, read October 30, 2026. To find these terms in your own papers, see find your credit card agreement and credit card statement explained.

The 21-day statement rule

If a grace period applies, the issuer must have reasonable procedures so that statements are “mailed or delivered at least 21 days prior to the date on which the grace period expires”, and so that it does not impose finance charges for losing the grace period “if a payment that satisfies the terms of the grace period is received by the creditor within 21 days after mailing or delivery of the periodic statement” (12 CFR 1026.5(b)(2)(ii)(B)(1), eCFR).

How you lose it

The CFPB says: “If you lose your grace period by not paying your balance in full by the due date, you will be charged interest on the unpaid portion of the balance. You will also be charged interest on purchases in the new billing cycle starting on the date each purchase is made” (CFPB). Its tip: “If you pay in full some months, and not in other months, you may lose your grace period for the month that you don’t pay in full and for the month after.”

What 1026.54 protects when you lose it

A card issuer “must not impose finance charges as a result of the loss of a grace period” based on “Balances for days in billing cycles that precede the most recent billing cycle” or on “Any portion of a balance subject to a grace period that was repaid prior to the expiration of the grace period” (12 CFR 1026.54(a)(1)(i) and (ii), eCFR). The first bans reaching back into earlier billing cycles. The second protects a partial payment: the official interpretation says that when you pay “some but not all” of a balance eligible for a grace period before it ends, the rule “prohibits the card issuer from imposing finance charges on the portion of the balance paid” (comment 54(a)(1)-5). The exceptions are adjustments after a billing dispute is resolved and after a payment is returned (1026.54(b)). For why interest can still show up on the next statement after you pay, see credit card trailing interest.

A partial payment, only for the math

This example follows the official interpretation’s example (comment 54(a)(1)-6.i), which uses a 15% APR; here the rate is the Federal Reserve’s August 2026 average of 22.36% for credit card accounts assessed interest (G.19), and the figures are only for the math, with simple daily interest. You paid last month in full, so your March purchases of $600.00 have a grace period until the April 25 due date. On April 25 the issuer receives $500.00 above the minimum payment, leaving $100.00 unpaid.

Part of the March purchase balance	Interest for the 30-day April cycle
$100.00 left unpaid	$1.84 may be charged
$500.00 paid by the due date	$9.19 may not be charged (1026.54(a)(1)(ii))
Whole $600.00	$11.03 if the paid part were not protected

$100.00 x 22.36% / 365 x 30 = $1.84, and $500.00 x 22.36% / 365 x 30 = $9.19; $1.84 + $9.19 = $11.03. Under 1026.54(a)(1)(i), no interest may be charged on the March purchases for days in March. In the official example, interest may also be charged on a new April purchase from the date of that purchase. Your agreement and statement show how your issuer figures interest. For how a payment above the minimum is split across balances, see credit card payment allocation.

Getting it back

The rules cited here do not say when a lost grace period must come back; your card agreement sets the conditions, and 1026.6(b)(2)(v) requires those conditions to be disclosed. Treat these as questions to ask the issuer:

Do I have a grace period on purchases right now?
If not, what do I need to pay, and by when, to get it back?
Do cash advances, balance transfers or convenience checks on my account have a grace period?
Does a promotional balance affect my grace period on new purchases?

For promotional balances, see deferred interest vs 0% APR; for cash advances, see credit card cash advance vs personal loan.

Checklist

Read the “How to Avoid Paying Interest” row in your account terms.
Find the grace period date or time period on each statement.
Pay the full statement balance by the due date to keep the grace period.
If you can pay only part of a balance that has a grace period, pay as much as you can by the due date; 1026.54 protects the part you pay.
After a lost grace period, check the next statement for interest on days in earlier billing cycles, which 1026.54 does not allow.
Ask the issuer how to get a lost grace period back.

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Disclosure: Modern Lending Solutions is not a lender, loan broker or agent for any lender or loan broker, and does not make credit decisions. Any compensation we receive is paid by participating lenders, only for advertising services. This guide is general information, not financial or legal advice.

Credit Card Grace Period: What the Rules Say