Short answer: your payment is due on the due date. A grace period, if your contract has one, is a set number of days after that before a late fee is charged; it does not move the due date. On a simple interest loan, interest keeps building every day you have not paid, grace period or not (Reg Z comment 18(l)-1). The late fee itself is set by your contract and must be shown on your loan disclosure (12 CFR 1026.18(l)).
How a late fee is set and shown
- On the disclosure. The lender must disclose any dollar or percentage charge that may be imposed before maturity for a late payment, other than a deferral or extension charge (12 CFR 1026.18(l)).
- Its form. It can be a percentage of the late amount, a dollar amount, or the lesser or greater of the two, as state law allows; a grace period may be disclosed with it (Reg Z comment 18(l)-2). This guide does not list state limits; your contract and the law where you live decide.
- Not in the APR. A charge for an actual, unanticipated late payment is not a finance charge (12 CFR 1026.4(c)(2)), so two loans with the same APR can have very different late fees. Compare the late payment lines too; see how to read a loan disclosure.
- What is not a late fee. The lender's right to demand the whole balance, actual collection costs such as repossession charges or attorney's fees, and interest that keeps building at the contract rate are not late payment charges. A rate increase because you paid late is one, to the extent of the increase (Reg Z comment 18(l)-1).
A dated example
Example only; all terms are made up to show how the dates and numbers work. A simple interest loan with a $6,000.00 balance at 15% APR and a $250.00 monthly installment. The contract says: a 10 day grace period, and a late fee of 5% of the late installment or $25.00, whichever is greater.
| Date | What it means |
|---|---|
| November 5, 2026 | Payment due |
| Through November 15, 2026 | Grace period: no late fee yet, but interest builds each day, about $6,000.00 x 15% / 365 = $2.47 |
| November 14, 2026 | Paid within the grace period: no late fee. 9 extra days of interest, about $22.23, so less of this payment goes to principal |
| If not paid by November 15, 2026 | Late fee: 5% of $250.00 is $12.50, so the greater amount, $25.00, applies |
| December 5, 2026 | Now 30 days past due; also the date the next payment is due |
Credit reports count late payments as 30, 60 and 90 days late (CFPB). Ask your lender when it reports a payment as late. A lender that reports negative information about you must tell you in writing, before or within 30 days after it first does so (15 U.S.C. 1681s-2(a)(7)).
What to do
- Treat the due date as the deadline; use the grace period only for a delay you could not avoid.
- If your pay arrives after the due date every month, ask to move the due date; see changing your loan payment due date.
- Already late? What can follow, step by step, and what to do now is in what happens if you miss a payment.
- If a late payment shows up that you made on time, dispute it with the credit bureau and the lender; see check your credit report.
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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.
Sources
- Regulation Z, 12 CFR 1026.18: content of closed-end disclosures
- Regulation Z, Supplement I (official interpretations), comments 18(l)-1 and 18(l)-2: late payment
- Regulation Z, 12 CFR 1026.4(c)(2): charges for actual unanticipated late payment are not finance charges
- CFPB: Understand your credit report (handout, PDF)
- 15 U.S.C. 1681s-2(a)(7): notice of negative information furnished to a credit bureau