Credit Card Interest Calculator
Estimate the interest cost of carrying a credit card balance.
Assumptions used in this calculation
- Daily simple interest: Interest is computed as simple daily interest (Balance × APR ÷ 365 × Days), not compounded, some issuers compound daily on the running balance, which produces a slightly higher real-world cost.
- No grace period: Assumes the balance is carried for the full period without being paid down, most cards charge no interest if you pay the statement balance in full by the due date.
About this calculator
The credit card interest calculator projects the interest cost of carrying an outstanding credit card balance for a period without paying it down, based on daily compounding.
Worked example
₹50,000 at 36% APR for 30 days
Result: ₹1,479 interest
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