Mortgage repayment calculator

Calculate repayments, total interest and payoff date using Australian-style repayment frequencies.

Repayment

Mortgage repayment calculator

Model your repayments and timeline before committing to a property budget.

Inputs

Snapshot

Loan amount

$720,000

LVR

80.00%

Monthly repayment

$4,363

Total interest

$850,738

Estimated payoff

30.00 yrs

Years saved

0.00 yrs

Interest saved vs baseline

$0

Payoff years saved vs baseline

0.00 yrs

Amortization preview

First 18 periods

PeriodPaymentInterestPrincipalBalance
1$4,363$3,660$703$719,297
2$4,363$3,656$707$718,590
3$4,363$3,653$710$717,880
4$4,363$3,649$714$717,166
5$4,363$3,646$718$716,448
6$4,363$3,642$721$715,727
7$4,363$3,638$725$715,002
8$4,363$3,635$729$714,274
9$4,363$3,631$732$713,541
10$4,363$3,627$736$712,805
11$4,363$3,623$740$712,066
12$4,363$3,620$743$711,322
13$4,363$3,616$747$710,575
14$4,363$3,612$751$709,824
15$4,363$3,608$755$709,069
16$4,363$3,604$759$708,310
17$4,363$3,601$763$707,548
18$4,363$3,597$766$706,781

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FAQs

How do I calculate mortgage repayments in Australia?

Use loan amount, interest rate, loan term and repayment frequency in a principal-and-interest repayment formula.

Is monthly or fortnightly repayment better?

Fortnightly can reduce interest over time because payments are applied more frequently, but impact depends on lender setup and calendar handling.

Does this calculator include fees and stamp duty?

No. This repayment calculator focuses on loan principal and interest. Add purchase and ongoing property costs separately.