How does the credit card calculator factor in annual fees and other charges?

Credit card calculators in India take into account annual fees, late payment fees and other applicable charges to give you a complete picture of how long it will take to pay off your credit card debt.

The calculators work by having you input your current outstanding balance, interest rate (APR), and proposed monthly payment amount. You can add any annual fee to the outstanding balance.

The calculator uses this data to estimate the number of months needed to pay off the balance based on how much of your payment goes towards interest vs principal each month. It spreads out the impact of one-time fees over the payoff period.

You can also input estimated recurring fees like late fees, so they are factored into the total interest cost. The calculator formula divides the APR by 12 to get the monthly interest rate and applies this to the declining balance each month.

Overall, accounting for all fees provides an approximate duration to become debt-free and your total interest cost. This helps make better decisions about credit card repayment.