Grace Period Calculator — Calculate Interest-Free Days & Credit Card Grace Periods

Grace Period Calculator

Calculate how grace periods work on credit cards, loans, and bills. Determine interest-free days, payment deadlines, and potential savings.

Step 1: Loan & Credit Details

18%
21

Understanding Grace Periods

A grace period is the time between the end of a billing cycle and when payment is due without incurring interest. Credit cards typically offer 21-30 day grace periods.

Step 2: Payment Details

About Grace Periods

Making payments within the grace period avoids interest charges. If you pay only the minimum, interest accrues on the remaining balance. Always check your card’s specific terms.

Grace Period Calculation Results

Summary
Account Comparison
Breakdown

Interest Saved with Grace Period

$38.90
By paying within 15 days of a 21-day grace period
Daily Interest Rate
0.049%
Interest If Paid Late
$52.50
Effective Due Date
21 days
Monthly Interest Saved
$38.90

Account Type Comparison

Account Type Grace Period (Days) Interest Saved Annual Savings

Interest Savings Breakdown

Grace Period Formula

Interest Saved = Balance × (APR ÷ 365) × Days Paid Early

To calculate interest saved: Multiply your balance by daily interest rate (APR/365) and multiply by the number of days you pay before the grace period ends.

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