Grace period.
In plain English
The grace period is the mechanism that makes "pay in full, never pay interest" work. Buy something, it appears on a statement, and you have until the due date (at least 21 days later by law) to pay that statement balance with no interest charged. Lose the grace period by carrying a balance, and new purchases typically start accruing interest immediately until you've paid in full for a cycle or two.
01Why it matters
The grace period is the entire difference between a credit card as a free payment tool and a credit card as a 25% loan. Knowing how it's lost (and regained) explains interest charges that confuse almost everyone the first time.
02The math, step by step
Statement closes June 5 at $800, due June 30. Pay $800 by June 30: zero interest. Pay $700: interest accrues on the remainder AND new purchases lose their grace period, so July's coffee starts charging interest from the day it's bought.
03What this is NOT
The grace period is not the minimum payment deadline and not a late cushion. It only exists while you're paying statement balances in full; carry a balance and it's gone until you reset.
04Receipts
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Plain-English answers from our glossary. Receipts included. Never advice.
Educational tool. Answers come only from ClearMoneySchool's published glossary and are not advice. Why we never give advice