Monthly Interest Formula:
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This calculator estimates the monthly interest you'll pay on credit card debt with a 20% Annual Percentage Rate (APR). It helps you understand how much interest accrues each month on your balance.
The calculator uses the formula:
Where:
Explanation: The APR is divided by 12 to get the monthly rate, then multiplied by the principal balance to calculate the monthly interest.
Details: Understanding your monthly interest helps with budgeting and demonstrates how quickly credit card debt can grow if only minimum payments are made.
Tips: Enter your current credit card balance to see how much interest you'll be charged each month at 20% APR. This assumes no additional purchases or payments.
Q1: Is 20% APR typical for credit cards?
A: 20% is within the common range for credit card APRs, which typically range from 15% to 25% depending on creditworthiness.
Q2: Does this include compound interest?
A: This calculates simple monthly interest. Actual credit cards compound interest daily, which would result in slightly higher charges.
Q3: How can I reduce my interest payments?
A: Paying more than the minimum payment or transferring to a lower-interest card can reduce interest costs.
Q4: What if my APR changes?
A: Simply adjust the rate in the calculation (divide new APR by 12 instead of 0.20).
Q5: Why is APR divided by 12?
A: APR is annual, so dividing by 12 gives the monthly interest rate used for calculations.