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Credit Card Payoff Calculator

Calculate how long it takes to pay off a credit card and see total interest costs.

Last reviewed 15 August 2026

Your details

Calculator inputs

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When to use this calculator

  • Before comparing personal loan or credit offers on the same amount and term.
  • When you want to see total interest, not only the monthly payment.
  • When you are choosing between a shorter term and a lower monthly debit.
  • When you need a planning estimate before making a credit application.

A realistic Canada planning example

Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.

A realistic Canada planning example
InputValue
Balance (CA$)5000
APR (%)5%
Monthly Payment (CA$)6

After entering these figures, review paid off in, total paid and interest together rather than in isolation. Then rerun the tool with one input adjusted.

How to read your results

Paid Off In

The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.

Total Paid

The headline outcome of this calculation. It is most useful when read alongside the supporting metrics rather than in isolation.

Interest

The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.

Method & assumptionsAuthoritative sources

This calculator estimates how long it will take to pay off a credit card balance and the total interest you will pay, based on your current balance, your card's annual percentage rate (APR), and a chosen monthly payment amount. It uses a standard amortisation model, applying interest monthly at one-twelfth of the annual rate, then deducting your payment from the remaining balance.

The calculation assumes a fixed monthly payment and a fixed APR throughout the repayment period. In practice, UK credit card rates can change and providers may adjust minimum payments. This tool is intended for planning purposes only and does not constitute financial advice. Always check your most recent statement for your actual APR and outstanding balance before making decisions.

Common mistakes

  • !Using an assumption that is not supported by a current local quote, bill, statement or official source.
  • !Treating a generic estimate as a lender, provider, payroll or tax authority decision.
  • !Mixing monthly and annual inputs without converting them consistently.
  • !Testing only one scenario instead of checking how a cautious assumption changes the result.

What to do next

  • Run a second scenario with a cautious assumption so you can see the downside clearly.
  • Compare the result with the related calculators below before making a decision.
  • Check current local rules, eligibility and provider terms before applying or committing money.
  • Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.

Frequently asked

Check your credit card statement for your current APR (Annual Percentage Rate).

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