Monthly loan payment calculator

Monthly loan payments inputs

Loan principal (AUD) Annual nominal interest rate (%) Number of monthly payments

Calculate

Enter the inputs and calculate.

How it works

For fixed monthly interest r and n payments: payment = principal × r / (1 − (1 + r) raised to −n). At zero interest, payment = principal / n. Payments are in arrears, with no fees or balloon. Interest is estimated from unrounded payments; lender rounding and daily accrual can differ.

Loan reconciliation checklist

One of the nine business calculators. Calculations run in this browser. The calculator code does not send your inputs to a server or save them automatically. To check, disconnect from the internet once the page has loaded, then calculate.

Planning estimates in AUD. Confirm tax treatment, liability amounts and dates separately. Amounts round to the nearest cent, with exact half cents rounded up.

Written by Ryan Duguid in his own time and on his own equipment. He is a Provisional CA ANZ Member.