Australian Mortgage Repayment Calculator

Use the free Australian mortgage repayment calculator to estimate monthly home loan repayments in AUD and compare rate rise, hold and cut scenarios.

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What changes for my mortgage?

CHANGE THE RATE. COMPARE REPAYMENTS.

MY MORTGAGE SIMULATOR

IF THE RATE CHANGES BY+0.25 pp

MORE PER MONTH

/ mo

Current $3,597Scenario $3,694

Principal & interest, monthly repayments, full rate pass-through assumed. Excludes fees. Your lender sets your rate.

THE SAME LOAN. FOUR RATE SCENARIOS.

Select a row to update the simulator above.

Bars show the difference from your current repayment. pp = percentage points; rates are floored at 0%.

WHERE DO YOUR REPAYMENTS GO?

Estimated over 30 years at a constant 6.25% rate

INTEREST SHARE54.9%

Principal: $600,000
Estimated interest: $729,949
Estimated total: $1,329,949

Lifetime interest versus current rate+$34,920

A constant-rate scenario, not a rate forecast. Principal and interest; excludes fees, offsets and extra repayments.

PAYMENT AND PAYOFF PATH

How would you pay after a rate change?

Using the loan above, assume a new rate of 6.25%. Keep the same payment and inspect the pace of principal repayment.

Assumed monthly payment (AUD)Leave blank to use the payment estimated at the original rate.

Monthly payment$3,597

Scenario payoff391 months

At the end of the original remaining term, the scenario balance is still $102,230.

This is below the payment estimated at the new rate over the original remaining term; check the required payment against your contract.

Assumes the new rate stays constant, monthly interest, and no offset or fees. Scenario payoff does not change contractual maturity; entering principal repayment does not mean the lender executed it.

MAKE EACH REPAYMENT GO FURTHER

Adjust two amounts and see how much sooner you could be mortgage-free.

Current rate 6.00% · assumed constant

SEE YOUR PATH TO PAYOFF

Loan balance · AUD

Your planWithout changes

Explore the timeline5 years

Your plan $558,326Without changes $558,326

The curves currently overlap. Adjust your amounts to see the payoff path change.

Estimated interest saved: $0
Estimated time saved: 0 months
Planned monthly repayment: $3,597

Base payment $3,597 + extra $0 · Total planned interest $695,029

View annual repayment schedule

Starts with your next repayment; amounts in AUD. CSV includes monthly detail and assumptions.

Estimate at the current rate with offset and extra repayments
Loan year	Paid	Principal	Interest	Closing balance
1	$43,168	$7,368	$35,800	$592,632
2	$43,168	$7,823	$35,345	$584,809
3	$43,168	$8,305	$34,863	$576,504
4	$43,168	$8,817	$34,350	$567,687
5	$43,168	$9,361	$33,807	$558,326
6	$43,168	$9,938	$33,229	$548,388
7	$43,168	$10,551	$32,616	$537,836
8	$43,168	$11,202	$31,965	$526,634
9	$43,168	$11,893	$31,275	$514,741
10	$43,168	$12,627	$30,541	$502,114
11	$43,168	$13,405	$29,762	$488,709
12	$43,168	$14,232	$28,935	$474,477
13	$43,168	$15,110	$28,058	$459,367
14	$43,168	$16,042	$27,126	$443,325
15	$43,168	$17,031	$26,136	$426,293
16	$43,168	$18,082	$25,086	$408,211
17	$43,168	$19,197	$23,970	$389,014
18	$43,168	$20,381	$22,786	$368,633
19	$43,168	$21,638	$21,529	$346,994
20	$43,168	$22,973	$20,195	$324,022
21	$43,168	$24,390	$18,778	$299,632
22	$43,168	$25,894	$17,274	$273,738
23	$43,168	$27,491	$15,676	$246,246
24	$43,168	$29,187	$13,981	$217,060
25	$43,168	$30,987	$12,181	$186,073
26	$43,168	$32,898	$10,269	$153,174
27	$43,168	$34,927	$8,240	$118,247
28	$43,168	$37,082	$6,086	$81,165
29	$43,168	$39,369	$3,799	$41,797
30	$43,168	$41,797	$1,371	$0
Total	$1,295,029	$600,000	$695,029	$0

Assumptions & source

Monthly principal-and-interest estimate, with the term rounded to whole months. Assumes a constant rate and offset balance, with repayments funded separately. Offsets reduce interest, not the base repayment; the final payment clears the balance. Excludes account fees, repayment restrictions and fixed-rate break costs. Lenders usually calculate interest daily; actual results may differ. How offsets work ↗

HOW WOULD HIGHER RATES AFFECT YOU?

The same balance and term. See how higher rates change your monthly repayment.

Current paymentAdded by a higher rate

Current6.00%

$3,597 / moBaseline

+1 pp7.00%

$3,992 / mo$395 more per month

+2 pp8.00%

$4,403 / mo$805 more per month

+3 pp9.00%

$4,828 / mo$1,230 more per month

Independent rate stress scenarios, not a rate forecast or a lender serviceability assessment. Excludes offsets, extra repayments and fees.

How the mortgage repayment calculator works

Enter the outstanding principal, your lender's annual interest rate and the years remaining. The calculator divides the annual percentage rate by 1,200 to obtain a monthly decimal rate and uses the standard principal-and-interest repayment formula over the remaining monthly payments. At a zero interest rate, the principal is divided evenly across those payments. The repayment estimate and total interest assume the selected rate stays constant for the remaining term.

No. Twenty-five basis points is 0.25 percentage points: a hypothetical 6.00% loan rate becomes 6.25% after a full 25 basis point increase. The calculator applies that change to your loan rate and recalculates repayments. Your lender determines the actual adjustment and timing. Rate scenarios exclude fees, offsets and interest-only periods. The separate repayment planner models a constant 100% offset balance and monthly extra repayments at your current rate, with the term rounded to whole months. Offset reduces interest without lowering the base repayment; offset funds are not used to repay principal. Estimates use monthly interest rather than a bank's daily calculation or your individual loan contract.

A hypothetical home loan example

For an AUD 600,000 balance over 25 years, monthly principal-and-interest repayments are approximately $3,866 at 6.00%, or $3,958 at 6.25%: an increase of about $92 per month. This assumes a constant rate for the remaining term and excludes fees; contractual repayments may differ.

INSTALLABLE / BILINGUAL / RESPONSIVE