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Mortgage Repayment & Offset Calculator
See what your home loan costs each month, fortnight or week — then try an offset balance or a little extra each month and watch the years come off. Free, instant, and no sign-up.
- 60 secTo see your numbers
- 3 waysTo finish the loan sooner
- FreeNo sign-up, no catch
Your loan
Use the rate you have been offered, or leave it here for a feel of the numbers.
Year by year
Watch the balance come down
- At 6.20%
- At 5.70%
Try another rate
Rates move both ways over a loan this long. Drag or tap to see the same loan at a different rate — the graph follows.
Lenders check you could still manage if rates rose by about 3%, which is what the last chip shows. It is a safety margin they apply, not a forecast.
Finish sooner
What a little extra does
Extra repayments come straight off the balance. Here is what putting a bit more in each month would do to the loan above — tap one to try it.
- +$100 a month$63,307less interest · 1 yr 8 mo sooner
- +$250 a month$142,021less interest · 3 yr 9 mo sooner
- +$500 a month$243,376less interest · 6 yr 7 mo sooner
Three easy wins
Small changes, surprisingly big difference
Most of a home loan is settled the day you sign. But three things stay in your hands the whole way through, and none of them need a big income or a lot of effort.
- A sharper ratePlenty of people pay a little more than they need to, simply because nobody asked. A quick call — or a broker making it for you — is often all it takes.
- A little extra each monthExtra repayments go straight onto the balance rather than the interest, so they bring the finish line forward. Try one in the calculator above and see.
- Savings sitting in offsetMoney in an offset account is still yours and you can spend it any time. While it sits there, it quietly lowers the interest you are charged.
Would you rather someone else did this bit?
A good mortgage broker compares lenders for you, handles the paperwork and often finds a sharper rate than the one you are on. In most cases the lender pays them, not you.
What moves the number
The three worth getting right
No windfall or spreadsheet required. These are small, ordinary habits that add up nicely over a loan.
The rate you are onA rate is not set in stone. Lenders often give new customers a better deal than existing ones, and closing that gap is usually a conversation rather than a whole refinance.Often just a phone call
How often you payWeekly, fortnightly or monthly comes to the same thing, so pick whatever matches your pay cycle. If you want to go faster, paying half the monthly amount every fortnight slips in roughly an extra month each year.Match it to payday
Money in offsetAn offset account is an everyday account linked to your loan. Its balance reduces the interest you are charged, day by day, and you can still spend it whenever you like.Your money, still yours
Keep going
The rest of the sums
How the maths works
Interest compounds monthly. Fortnightly and weekly figures are exact conversions of the monthly repayment, not the accelerated half-monthly method some lenders offer. See our methodology.
The rate is yours to set
We do not publish or recommend rates. Type in whatever you have actually been offered, or been quoted, and every figure follows it.
What this is
A guide to what a loan would cost, so you can plan with real numbers. Your lender works out the actual figures, fees and insurance included.
One more thing
Happy with the numbers? Now have a look at the place.
Block size, easements, planning overlays and what has been selling nearby — free for any Victorian address, and no sign-up for that either.
A guide, not a quote. This calculator applies standard amortisation to the figures you enter and is not financial or credit advice. It assumes monthly compounding and a steady interest rate for the life of the loan. It does not include establishment or ongoing fees, lenders mortgage insurance, redraw conditions or your lender’s specific offset terms. Your actual repayments depend on your lender’s rates, fees and credit policy — check anything that decides a purchase with them or with a licensed mortgage broker.