Introduction
This home loan calculator shows what your repayments could be. Type in your loan amount, your loan term, and your interest rate. You will see your weekly, fortnightly, or monthly repayment right away. You will also see how much interest you pay over the whole loan.
The calculator has two parts. The Repayment Calculator works out what you will pay each week, fortnight, or month — much like our CBA Repayment Calculator. The Borrowing Power tool uses your income and your bills to guess how much you may be able to borrow, similar to a Home Affordability Calculator.
You can also test a few "what if" ideas:
- Extra repayments: see how much interest you save and how much sooner your loan ends with our Mortgage Extra Payment Calculator.
- Rate changes: see what happens if rates go up or down using the Mortgage Rate Calculator.
- Interest only: see your smaller early payments, and the bigger ones that come later — the Interest Only Mortgage Calculator digs deeper.
- Compare loans: put three loans side by side and pick the best one, or try the Loan Comparison Calculator.
Pick a fixed or variable home loan for an owner occupied home or an investment property, or just type in your own rate. A chart shows how your loan balance drops each year, and a table lists the numbers year by year like a full Mortgage Amortization Calculator. There is also a step-by-step section that shows the maths behind every answer.
These numbers are estimates only. Your real rate and repayment depend on your loan, your deposit, and the lender's checks.
How to use our Home Loan Calculator
Enter your loan amount, loan term, interest rate and how often you want to pay. The home loan calculator shows your repayment, the total interest you will pay, how long the loan takes to pay off, and how much you may be able to borrow.
Repayment Calculator
Loan Purpose: Pick Owner Occupied if you will live in the home, or Investment if you will rent it out. This changes the loan products and rates you can pick. If you are buying to rent, our Investment Property Calculator and Rental Yield Calculator can help too.
Loan Amount: Type how much you want to borrow. This is the price of the home minus your deposit. The lowest amount is $10,000. Work out your deposit first with the Down Payment Calculator.
Loan Term: Type how many years you want to pay the loan back over, from 1 to 30 years. A longer term means smaller repayments but more interest. See the difference with our 30 Year Mortgage Calculator and 15 Year Mortgage Calculator.
Repayment Type: Choose Principal & Interest to pay down the loan, or Interest Only to pay just the interest for a while. If you pick Interest Only, choose how many years that lasts. The Interest Only Calculator shows what happens after that period.
Repayment Frequency: Choose weekly, fortnightly or monthly repayments. Paying weekly or fortnightly can help you pay less interest — see the Biweekly Mortgage Calculator.
Interest Rate: Pick "Choose a product" to use a listed home loan rate, or "Enter my own rate" to type your own rate between 0.01% and 20% p.a. Not sure what rate suits you? Try the interest rate calculator.
Home loan product: Pick a fixed rate or variable rate loan from the list. Fixed loans go back to the variable rate when the fixed term ends. Your LTV Calculator result helps you see which rate tier you fall into.
Extra repayment: Type any extra money you can pay on top of your normal repayment. The calculator shows the interest you save and the time you cut off your loan, just like the Early Mortgage Payoff Calculator.
Interest rate change: Pick a rate rise or rate cut, or choose Custom and type your own change. This shows what your repayment would be if rates move.
Scenario B and C: Type a loan amount, rate, term, repayment type and frequency for two other loans. The table and chart compare them with your loan, in the same way our Mortgage Comparison Calculator does.
Graph or Table: Use the buttons to see your loan as a chart or as a year-by-year table. For a month-by-month view, use the Amortization Calculator.
Borrowing Power Calculator
Gross annual income (applicant 1): Type your pay for one year before tax. Our Gross Annual Income Calculator can help if you are paid hourly.
Gross annual income (applicant 2): Type the yearly pay before tax for the person buying with you. Type 0 if you are buying alone.
Monthly living expenses: Type what you spend each month on food, bills, travel, insurance and fun. A quick pass through the Monthly Budget Calculator makes this number more accurate.
Other loan repayments: Type what you pay each month for car loans, personal loans and credit cards. Check how these affect your DTI Calculator result before you apply.
Number of dependants: Pick how many children or others you support.
Loan term: Type how many years you want the new loan to run for, up to 30 years.
Interest rate: Type the rate you think you will get. We add a 3.00% buffer to check you can still pay if rates rise.
Repayment type and frequency: Choose Principal & Interest or Interest Only, then pick weekly, fortnightly or monthly repayments.
Press Calculate to see your results, or Reset to start again.
Home Loan Repayments and Borrowing Power Explained
A home loan is money a bank lends you to buy a house or unit. You pay it back over many years, plus interest. Interest is the cost of using the bank's money. In Australia, most home loans run for up to 30 years. If you want the plain formula behind any loan, see the Loan Payment Calculator.
What Your Repayment Is Made Of
Each repayment has two parts:
- Principal – the part that lowers what you owe.
- Interest – the fee the bank charges on what you still owe.
Early on, most of your payment goes to interest. As your balance drops, more goes to principal. This is why a small extra payment early can save a lot — the Mortgage Interest Calculator shows the split clearly.
Principal & Interest vs Interest Only
Principal and interest (P&I) pays down the loan every month, so you own more of your home over time. Interest only (IO) means you only pay the interest for a set time, often 1 to 5 years. Your payment is smaller at first, but you still owe the full amount when the IO period ends. Then payments jump higher, because you must repay the same debt in fewer years. IO is common with investment loans and with buy to let mortgages.
Fixed Rate vs Variable Rate
A fixed rate stays the same for a set number of years. Your payment does not change, even if rates rise. When the fixed term ends, the loan usually moves to the bank's standard variable rate. A variable rate can go up or down at any time, which changes your payment. If your fixed term is ending, the Refinance Calculator is worth a look.
LVR and Why It Matters
LVR means Loan to Value Ratio. It is your loan amount divided by the property value. If you borrow $600,000 on a $750,000 home, your LVR is 80%. A lower LVR usually gets you a lower rate. An LVR over 80% often means paying Lenders Mortgage Insurance (LMI) — the PMI Calculator shows how this style of insurance adds up. As you pay down the loan your home equity grows and your LVR falls.
Repayment Frequency
You can pay monthly, fortnightly or weekly. Fortnightly and weekly payments are worked out from the monthly amount. Because there are 26 fortnights in a year (not 24), paying fortnightly can chip away at the loan a bit faster. The Mortgage Payoff Calculator puts a date on it.
Comparison Rate
The comparison rate mixes the interest rate with standard fees into one number. It gives a fairer way to compare two loans than the headline rate alone. It works much like an APR Calculator result.
How Borrowing Power Works
Borrowing power is the largest loan a bank thinks you can repay. Lenders look at your income after tax, your living costs, other debts like car loans and credit cards, and how many people you support. Use the Take Home Pay Calculator to check your after-tax pay. What is left over each month is your surplus, and that surplus sets your loan size.
Banks also add a serviceability buffer, usually 3%, on top of the real rate. So a 6% loan is tested at 9%. This checks you could still pay if rates rise. It is why your borrowing power falls when rates go up. Investors are often also checked on a DSCR Calculator basis.
Ways to Pay Less Interest
- Make extra repayments, even small ones — try the Extra Payment Calculator.
- Choose a shorter loan term if you can afford the higher payment.
- Keep your LVR low with a bigger deposit, built up with a Savings Goal Calculator.
- Compare rates and ask your lender for a better deal.
- Pay down other debts before you apply, using the Debt Payoff Calculator.
Buying also brings one-off costs. Budget for stamp duty, closing costs and moving costs before you settle. If you are still weighing up your options, the Rent vs Buy Calculator is a good place to start.
These numbers are estimates only. Your real rate, fees and approved loan amount depend on the lender's checks and your full financial situation.