Credit Card Interest Formula:
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Credit card interest calculation determines the finance charges applied to outstanding balances. In the Philippines, this is typically calculated using the average daily balance method with the formula: I = (ADB × R × D) / (100 × 30).
The calculator uses the credit card interest formula:
Where:
Explanation: This formula calculates the interest charges based on your average daily balance, the applicable interest rate, and the number of days in the billing cycle.
Details: Understanding how credit card interest is calculated helps consumers manage their finances better, avoid unnecessary charges, and make informed decisions about credit card usage.
Tips: Enter your average daily balance in PHP, the monthly interest rate as a percentage, and the number of days in your billing cycle (typically 30). All values must be positive numbers.
Q1: What is Average Daily Balance (ADB)?
A: ADB is the sum of your daily balances divided by the number of days in the billing cycle. It's the most common method used by Philippine banks.
Q2: How is the monthly interest rate determined?
A: The interest rate is set by your credit card issuer and is typically expressed as a monthly percentage rate. Check your cardholder agreement for specific rates.
Q3: Why divide by 100 and 30 in the formula?
A: Dividing by 100 converts the percentage rate to a decimal, and dividing by 30 adjusts the monthly rate to a daily rate for the actual days in the billing cycle.
Q4: Are there other fees besides interest?
A: Yes, credit cards may also charge late payment fees, annual fees, and other service charges in addition to interest.
Q5: How can I reduce my credit card interest?
A: Pay your balance in full each month, make payments on time, and consider balance transfer options with lower interest rates.