Calculate your borrowing power
This calculator is designed to estimate how much you might be able to borrow for a home loan. It will also give an estimate of the repayment amount you could expect. Simply enter some basic information about your plans, income, expenses and liabilities, and the home loan borrowing calculator will do the rest! See our borrowing calculator here.
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Get a quick estimate before you apply.
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Borrowing power explained
Your borrowing power is based on a range of factors including your income and expenses, dependents, and any assets or outstanding debts you might have.
Our borrowing power calculator can only give an estimate rather than a definitive answer. This is because it has limited, unverified information to work with and isn't able to factor in all the relevant details.
The calculator estimates your borrowing power based on answers you provide about your plans, income, debts and expenses. However, as mentioned previously, this information is both limited and unverified, so the results can only be considered an indication rather than fully accurate.
Yes, you can use the borrowing power calculator for both owner-occupier and investment home loans.
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Rates current as at 22 May 2026 and subject to change.
Great Southern Bank, a business name of Credit Union Australia Ltd ABN 44 087 650 959, AFSL and Australian Credit Licence 238317. Lending criteria, limits, conditions and fees apply. Applications are subject to credit approval.
1 Discounts off the Basic Variable and Offset Variable Reference Rate are available to (a) new home loans with a minimum application amount of $100,000; or (b) switching or restructuring of the home loan you already have with us when it includes new borrowing of at least $10,000; for new home loan applications unconditionally approved on or after 22 May 2026. Published interest rates are inclusive of any discounts off the respective Reference Rates. Interest rates and discounts vary based on the loan purpose (owner occupier and investor), repayment type (principal and interest, interest only, construction) and Loan to Value Ratio (LVR). Maximum LVR applies and includes Lenders' Mortgage Insurance and Great Southern Bank loan setup fees where applicable.
2 Great Southern Bank may withdraw or amend this offer at any time without notice. A change in your loan purpose, your repayment type or your loan product will permanently end your entitlement to the discount.
3 LVR means ‘Loan to Value Ratio’. It is the amount of your loan divided by the valuation of your property, calculated as a percentage. For example, if you apply for a loan of $400,000, which will be secured by a property valued at $500,000, your LVR is 80%. We calculate your LVR at the time we approve your loan and your discount won’t change because of changes to the LVR during the life of your loan.
^ Comparison rate accurate for $150,000 secured loan over 25 years. WARNING: This comparison rate is true only for the examples given and may not include all fees and charges. Different terms, fees or other loan amounts might result in a different comparison rate.
The results from this calculator should be used as an indication only. Repayment is for principal and interest and is based on a 30-year loan term. Changes in interest rates, repayment frequency and loan term will affect the repayment and savings amounts. The rate you have entered may not necessarily be a rate available for new lending with Great Southern Bank.
Your contracted home loan repayments will be set to a monthly frequency, meaning you will need to meet the agreed repayment amount by the due date stated on your loan contract each month. To meet this minimum monthly amount, you can however make repayments weekly or fortnightly.
Fees and charges are payable. The calculations do not take into account fees, charges or other amounts that may be charged to your loan (such as establishment or monthly service fees or stamp duty). If you are borrowing more than 80% of the value of the property, Lenders Mortgage Insurance will apply. Any of these additional amounts will increase the repayments and decrease the savings under the loan.
Lending is to approved applicants only and all lending is subject to a detailed credit assessment.
This is general information and does not take into account your objectives, financial situation or needs. Consider the appropriateness of the information before acting on it.
If you're looking to buy a property but aren't sure if you can get the home loan you need, pre-qualification can make your path forward clearer.
Use pre-qualification to tell us your plans, income, debts and expenses, and we'll give you a good indication of how much you might be able to borrow.
- It's free
- There’s no commitment
- No credit checks
- It only takes five minutes
What's the difference between pre-approval and pre-qualification?
Think of pre-qualification as the free sample you get at an ice cream shop. There’s no commitment. You’re just discovering what’s on offer to you.
Pre-approval is when you’re serious about buying. You formally apply for a home loan and give us detailed information about your financial and employment situation. We also run a credit check to review your credit history. You’ll end up with a definitive amount that you can borrow so you can start making offers on properties.