Mortgage repayment calculator
Estimate your repayments, total interest and when you could pay off your loan. Add an offset or extra payments to explore savings. All amounts are in Australian dollars.
Understand your mortgage repayments
This Australian home loan calculator estimates monthly repayments, total interest and time to repay. Enter a new loan amount or your current balance and remaining term, then explore how different rates, offset savings and additional repayments change the estimate.
Plan a buffer around your mortgage repayments
Your mortgage payment is one part of your household budget. Use the savings buffer planner to see how long accessible savings could cover your repayments and living costs if income falls or expenses rise. Calculate above first to carry your starting monthly repayment and offset balance into the planner.
Offset savings and extra loan repayments
An offset lowers the balance used to calculate interest while the money stays in your account. Direct extra repayments reduce the loan principal. This calculator lets you test weekly offset deposits or additional loan repayments, plus lump-sum repayments, against the same loan without an offset or extras.
Offset coverage and loan repayment are different: having enough cash in an offset does not automatically repay the loan. For a general explanation, read ASIC Moneysmart’s guide to mortgage offset accounts.
Explore rate changes and interest-only periods
Try a higher or lower rate, or a fixed period followed by a variable rate. Future rates stay at the values you enter. For interest-only, enter the rate during that period and the rate after it ends. Five interest-only years means principal and interest starts in year 6, over the remaining term; this calculator defers direct extra loan repayments until that switch.
Weekly and fortnightly figures are budgeting equivalents of the monthly repayment. Fees, lender restrictions and offset withdrawals are excluded. Read how our mortgage repayment estimates are calculated for the full assumptions.
What difference would another $100 a week make?
After calculating, open Test a different amount or rate to explore the amounts that matter to you. Enter a new total weekly amount, a different starting offset balance or a higher or lower interest rate. The preview shows the contribution or repayment change, total interest and repayment time. Select Use this scenario for the full updated report, or check it against your budget without saving it.