A simple way to plan repayment

Credit Card Interest Calculator Sri Lanka

Enter your card balance, interest rate, and planned monthly payment to estimate how long repayment may take and how much interest you could pay.

Enter your card statement details

Use the amount carried forward that is subject to interest, not your credit limit.

Use the monthly payment you plan to make. If you’re comparing with the minimum due, find that amount on your statement.

WORKED EXAMPLE · MONTHLY ESTIMATEBalance Rs. 250,000 · 28% p.a. · payment Rs. 20,000/month

Estimated payoff: 15 months · estimated total interest: Rs. 49,023. Assumes no new spending or extra charges.

Simple estimate, using your numbers We estimate monthly interest as balance × annual rate ÷ 12, then subtract your payment. The estimate assumes the same payment and rate each month, with no new spending or fees.

Credit card interest-free periods, payment allocation, and interest calculations depend on your card terms and transaction dates. For example, interest may still apply when you pay only part of a statement balance. Review the CBSL 2026 Guideline on Credit Card Operations and your issuer's latest statement and terms.

This is a planning estimate, not your bank’s statement calculation. Your issuer may calculate interest daily and apply payments differently, so your actual interest and payoff date may vary.

Useful things to know about card interest

  • Paying the full statement balance by the due date may keep eligible purchases interest-free. Check your card’s terms.
  • Cash advances can have different interest rules and may start accruing interest immediately.
  • Minimum payments and payment allocation vary by issuer. Paying more than the minimum usually reduces the balance faster.
  • This calculator uses a monthly estimate. Your issuer’s actual interest may be based on daily balances and transaction dates.

Credit card interest calculator FAQs

How do I find my credit card interest rate in Sri Lanka?

Check the annual interest rate or monthly interest rate printed on your latest card statement or published in your issuer's current tariff. Enter the annual percentage rate in this calculator.

Will paying only the minimum amount clear my card balance?

It can take a long time to repay a balance when payments are close to the monthly interest and charges. Enter the amount you actually plan to pay to see an estimate; the calculator does not assume a universal minimum-payment percentage.

Why is my bank's interest amount different?

Your issuer may calculate interest daily from transaction or statement dates and account for payment timing, new purchases, cash advances, fees, and payment allocation. This calculator uses a simpler monthly estimate to help you compare payoff amounts.

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