Extra repayment savings calculator
See how much interest you could save, and how many years you could cut off your home loan, by paying a little extra each month.
New repayment: $0 per month.
Estimate only, for general information and not financial advice. It assumes a constant rate and principal-and-interest repayments, and excludes fees and offset. Last checked June 2026.
Why extra repayments work so hard
Early in a loan, most of each repayment is interest. An extra payment goes straight to the principal, so it stops you paying interest on that amount for the rest of the loan, which is why even a modest extra each month can save tens of thousands and cut years off the term. The full playbook is in how to pay off your mortgage faster.
Extra repayments or an offset?
An offset account gives a similar saving while keeping the money accessible, which suits many people better than locking it into the loan. Both beat leaving cash in a low-interest savings account. See the wider picture in our home loans guide.
The bottom line
Extra repayments are powerful, but the biggest single lever is still the rate. If yours is uncompetitive, compare lenders with a tool like Your Finance Guide first, then pile the extra on top.