Calculators
Home loan calculators
Run the numbers before you talk to a broker. Our calculators give you a quick, plain-language estimate so you walk into the conversation already knowing roughly where you stand.
Mortgage repayment calculator
Estimate your monthly, fortnightly or weekly repayments based on loan amount, interest rate and term. See how a rate change moves your repayment.
Try it →Borrowing power calculator
Get a guide to how much you may be able to borrow based on your income, expenses and existing commitments.
In the worksStamp duty calculator
Estimate the stamp duty and government charges on a property purchase in Western Australia.
In the worksExtra repayments calculator
See how much interest and time you could save by making extra repayments on your home loan.
In the worksGood to know
A calculator is a starting point, not the full picture
Our calculators give you a useful estimate, but your real numbers depend on the lender, your full financial situation and the product you choose. Rates, fees and lending criteria vary, and small differences add up over the life of a loan.
That is where a broker helps. Oui Finance compares options across a panel of lenders and explains the trade-offs in plain language, so the estimate you run here turns into a loan that actually suits you.
Want the numbers checked by a real person?
Book a complimentary, no obligation chat with the Oui Finance team. We will talk through your estimate and what it means for your next move.
Reach out to Oui Finance