Credit Card Interest Formula:
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The credit card interest calculation determines how much interest you'll pay based on your average daily balance, annual percentage rate (APR), and the number of days in your billing cycle. Understanding this helps manage credit card debt effectively.
The calculator uses the standard credit card interest formula:
Where:
Explanation: The formula calculates daily interest by converting APR to a daily rate, then multiplying by the average balance and number of days.
Details: Knowing how interest is calculated helps consumers understand the true cost of carrying a balance and make informed decisions about credit card usage.
Tips: Enter your average daily balance in dollars, APR as a percentage (e.g., 18.99), and the number of days in your billing cycle (typically 30-31). All values must be positive numbers.
Q1: How is average daily balance calculated?
A: Add up each day's ending balance in the billing cycle, then divide by the number of days in the cycle.
Q2: Does this include compound interest?
A: No, this is simple interest calculation. Most credit cards compound interest daily but charge it monthly.
Q3: What's a typical APR range?
A: Generally 15-25% for standard cards, though rates vary based on creditworthiness and card type.
Q4: How can I reduce my interest charges?
A: Pay your balance in full each month, make payments early in the cycle, or negotiate a lower APR.
Q5: Are there other fees not included here?
A: Yes, this doesn't account for late fees, annual fees, or penalty APRs that may apply.