Credit Card Interest Formula:
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Credit card interest is typically calculated monthly based on average daily balance. This method accounts for daily fluctuations in your balance throughout the billing cycle.
The calculator uses the credit card interest formula:
Where:
Explanation: The formula calculates interest by multiplying the average daily balance by the monthly interest rate and number of days, then dividing by 100 (to convert percentage) and 30 (standard monthly days).
Details: Understanding how credit card interest is calculated helps consumers make informed decisions about payments, balance management, and choosing credit cards with favorable terms.
Tips: Enter your average daily balance in dollars, monthly interest rate as a percentage (e.g., enter 1.5 for 1.5%), and number of days in your billing cycle (typically 30). All values must be positive numbers.
Q1: Is credit card interest calculated monthly or yearly?
A: Credit card interest is typically calculated monthly based on your average daily balance, though the rate is often expressed as an annual percentage rate (APR).
Q2: How is average daily balance calculated?
A: Add up your daily balances for the billing cycle and divide by the number of days in the cycle.
Q3: What's the difference between APR and monthly rate?
A: APR is the annual rate, while the monthly rate is approximately APR divided by 12. However, daily periodic rates are often used for actual calculations.
Q4: Do all credit cards use this calculation method?
A: While most use average daily balance method, some may use adjusted balance or previous balance methods. Always check your cardholder agreement.
Q5: How can I avoid paying credit card interest?
A: Pay your full statement balance by the due date each month to avoid interest charges on purchases.