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Mortgage calculators

Know your numbers
before you commit.

Run the numbers before you commit. These calculators give you a clear starting point - Lendology gives you the precise figures across 60+ lenders.

Book a chatCall 08 8270 5138
Home Calculators
Home loans

Repayment calculator

Estimate your monthly, fortnightly and weekly repayments. Compare P&I versus interest only with offset account modelling and amortisation schedule.

Calculate repayments →
Buying costs

Stamp duty calculator

Calculate stamp duty for any Australian state or territory. Includes first home buyer concessions for all states in 2026.

Calculate stamp duty →
Refinancing

Refinancing calculator

See exactly how much you could save by switching lenders - after all switching costs are factored in.

Calculate savings →
Save faster

Extra repayments calculator

See how much time and interest you save by paying extra each month - or with a one-off lump sum.

Calculate savings →
Deposit planning

LMI calculator

Estimate your Lenders Mortgage Insurance premium and find every pathway to avoid it - including the First Home Guarantee.

Calculate LMI →

These are estimates

Lendology gives you the precise figures

Book a chat and Jason or Steve will calculate your exact repayments, stamp duty and savings across 60+ lenders - at no cost to you.

Book a chat 08 8270 5138

Why calculators are just the starting point

Online calculators give you a ballpark figure based on simplified assumptions. Your actual repayment, stamp duty, or refinancing saving depends on the specific lender, their assessment criteria, the fees they charge, and features like offset accounts or redraw facilities that affect the true cost of your loan.

At Lendology, we compare the real numbers across 60+ lenders - not just the headline rate, but the total cost including fees, features, and flexibility. The difference between the calculator estimate and the best deal available to you can be thousands of dollars over the life of your loan.

Use these tools to get a sense of the numbers, then book a chat for the precise figures based on your actual situation.

Frequently asked questions

How accurate are these calculators?

They give you a reliable estimate for planning purposes. Actual figures depend on the specific lender, your income and expenses, and the loan features you choose. Lendology provides precise figures after a full assessment - at no cost.

Do I need to know my exact interest rate?

No. Use the current average variable rate as a starting point (shown as the default in each calculator). We will find your actual best available rate when you book a chat.

Can I save my calculation results?

Take a screenshot or note the key figures. When you book a chat with Lendology, we run the numbers using your actual income, expenses, and the best rates currently available - which will give you more accurate figures than any calculator.

Is there a borrowing capacity calculator?

Borrowing capacity depends on too many variables (income type, expenses, existing debts, lender policies) for a generic calculator to be accurate. The difference between lenders can be $80,000–$120,000 for the same borrower. Book a chat and we will assess your capacity across our full panel - it takes 15 minutes and gives you a real number.

Related articles

How home loan repayments are calculated
How home loan interest is calculated
Fixed vs variable rate home loans

Ready to find the
right loan?

Book a chat with Jason or Steve. No obligation, no cost - just clear advice.