iSmart Finance Group
Free Tools

Home Loan Calculators

Plan your property purchase with our free, easy-to-use calculators. Get instant estimates for borrowing power, repayments, stamp duty, and more.

Borrowing Power Calculator

Industry-standard methodology — APRA serviceability buffer applied

1
Your Situation
2
Your Income

Before-tax annual salary. Include base salary and guaranteed allowances only.

Gross annual rent. Lenders apply 80% shading.

Regular bonuses, dividends, government payments (80% assessed).

3
Expenses & Debts
HEM benchmark for your household: $2,346/month. Lenders use whichever is higher — entering less than HEM won't help.

Car loans, personal loans, HECS/HELP, other mortgages.

Enter combined limit, not balance. Lenders assess 3.5% of limit p.a.

Buy now pay later, maintenance payments, investment margin loans, etc.

4
Loan Details
Assessment rate: 9.50% (6.50% current variable + 3.00% APRA buffer). All lenders are required by APRA to assess your ability to repay at this higher rate. Repayments shown use the 6.50% display rate.

Enter your income to get started

Your result updates in real time as you fill in each section. The more detail you add, the more accurate your estimate.

Gross income (after tax net assessed)
Household size & dependants (HEM applied)
Credit card limits reduce capacity immediately
APRA 3% buffer tested at 9.50% assessment rate

This calculator uses industry-standard methodology: APRA 3% serviceability buffer, Australian tax rates 2025–26, and Household Expenditure Measure (HEM) benchmarks from the Melbourne Institute. Results are indicative only and not a credit assessment or loan approval. For an accurate borrowing capacity assessment speak with one of our brokers.

Repayment Calculator

Monthly, fortnightly or weekly — see what you actually pay

Monthly Repayment
$3,792

Total repaid

$1,365,267

Total interest

$765,267

Interest vs Principal — Year by Year

The earlier you make extra repayments, the more interest you save.

Refinancing Savings Calculator

See how much you save by switching to a lower rate

Typical costs: discharge (~$350), application (~$300–$600), valuation (~$300), legal fees (~$500–$2,000).

Monthly Saving
$341

$4,093 per year

Total interest saved

$90,036

Break-even point

9m

Current monthly payment$3,412
New monthly payment$3,071

Cumulative Net Savings Over Time

Starts negative (refinancing costs), turns positive at break-even, then every month is pure saving.

Stamp Duty Calculator

Estimate stamp duty and transfer fees by state

Enter property details to calculate costs

Loan Comparison Calculator

Compare different interest rates and see potential savings

Enter rates to compare

LMI Calculator

Estimate your Lenders Mortgage Insurance cost

Enter property details to calculate your LMI

This calculator provides estimates only. Actual LMI premiums vary by insurer and lender. Professional packages may offer LMI waivers for eligible occupations.

Extra Repayment Calculator

See how extra payments can save you money and time

Enter your loan details to see how extra payments can help

This calculator provides estimates only. Check with your lender about any limits on extra repayments, especially for fixed-rate loans which may have restrictions.

Mortgage Stress Calculator

Rate Rise Scenarios

See exactly how a rate change affects your repayments. Choose your loan type below.

Standard repayments that reduce the loan balance each month. Models how a rate rise increases your ongoing P&I payment.

Quick rate rise scenarios

Current repayment

$3,010

per month at 4.35%

At stressed rate

$3,328

per month at 5.35%

Extra per month$318
Extra per year$3,815
Total extra over 25 yrs$95,385

Moderate Impact

Review your budget — savings may be needed

Repayments rise 10.6% on a +1.00% rate move

Repayment Across Rate Scenarios

— coloured by stress level
CurrentLow impact (<8%)Moderate (8–16%)High (16–25%)Severe (>25%)

SMSF Commercial Property Calculator

Model your SMSF commercial LRBA repayments and fund requirements

From mid-August 2026, new SMSF residential property LRBAs are banned. Commercial property LRBAs are fully unaffected and remain a key SMSF investment strategy. Read the full law change guide.

1
Property Details

Offices, medical suites, warehouses, retail, industrial. GST may apply at settlement.

Total fund assets. Must comfortably cover the deposit, costs, and a liquidity buffer.

Expected annual rent from tenants. We calculate the gross yield and self-funding gap.

2
Loan Structure

Most SMSF commercial lenders cap at 70% LVR. Some allow 80% for lower-risk properties.

SMSF commercial lending rates typically range 7.50% to 9.00% (June 2026). Residential rates do not apply.

APRA assessment rate: 11.25% (your rate + 3.00% APRA buffer). Lenders assess serviceability at this higher rate.

Enter a purchase price to get started

Results update in real time as you fill in each field.

Commercial property still borrowable inside SMSF
Rates typically 7.50% to 9.00% for SMSF commercial
Interest deductible at 15% super tax rate
Max 70% LVR standard, 80% via select lenders

This calculator is for SMSF commercial limited recourse borrowing arrangements (LRBAs) only. From mid-August 2026, new residential LRBAs inside SMSFs are no longer permitted under the Treasury Laws Amendment (Tax Reform No. 1) Act 2026. Stamp duty estimates are approximate. Speak with a licensed SMSF adviser and our brokers for a personalised commercial LRBA assessment.

Ready to Take the Next Step?

These calculators provide estimates. For a personalized assessment of your borrowing capacity and loan options, book a free consultation with our expert brokers.

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