Free Loan Repayment Calculator

Estimate repayments, total interest and the full cost of a loan.

← All business calculators

Loan Repayment Calculator

Calculate monthly payments and total interest on a loan

Results

Monthly Payment $0.00
Total Interest $0.00
Total Repayment $0.00

First Payment

$0.00
Principal

First Payment

$0.00
Interest

Last Payment

$0.00
Principal

Last Payment

$0.00
Interest

About the Loan Repayment Calculator

A loan repayment is made up of principal and interest. Early repayments are mostly interest, which is why the total cost of a loan is often far higher than the amount borrowed. Seeing total interest before you sign is the point of this calculator.

Frequently Asked Questions

How are loan repayments calculated?

Using the amortisation formula, which spreads principal and interest evenly across the term. Each repayment covers the interest accrued for that period, and the remainder reduces the principal.

Why is so much of my early repayment interest?

Interest is charged on the outstanding balance, which is highest at the start. As the principal falls, the interest portion shrinks and more of each repayment reduces the balance.

Does this include fees?

No. It calculates principal and interest only. Establishment fees, ongoing account fees and insurance are not included, so the true cost of a loan may be higher.

Is this loan calculator free?

Yes, free with no signup. Figures are estimates only and are not financial advice.

Related Tools & Guides

Accounting & Finance Tools

Forecast cash flow with repayments

 P&L Statement Builder

See interest in your P&L

 All Business Calculators

GST, margin and break-even

 Cash Flow Management

Plan for loan repayments
  • Switch Calculators: Click the tabs at the top to switch between GST/Tax, Markup vs Margin, Break-Even, and Loan Repayment calculators.
  • GST Calculator: Enter an amount, choose "Add GST" or "Remove GST", and select a tax rate preset or enter a custom rate. Results update instantly.
  • Markup vs Margin: Enter your cost and selling price to see both markup percentage and margin percentage side by side. Understand the difference for better pricing.
  • Break-Even Analysis: Enter your fixed costs, price per unit, and variable cost per unit to find how many units you need to sell to break even.
  • Loan Calculator: Enter the loan amount, interest rate, and term to see your monthly payment, total interest, and amortisation breakdown.
  • Real-Time Results: All calculators update as you type — no need to click a "Calculate" button.
  • Copy Results: Use the Copy button (where available) to quickly copy calculated values to your clipboard.
  • No Data Stored: These calculators don't save any data. They run entirely in your browser for privacy.