Guide · Australia
10 Common Home Loan Mistakes Australian Buyers Make
Last updated 2026-06-27 · Published 2026-06-27
Avoid expensive mistakes when applying for an Australian home loan. Learn about credit card traps, ignoring LMI, spending to pre-approval limits, and neglecting offsets.
1. Spending to Your Bank Pre-Approval Limit
One of the biggest mistakes is assuming that because a bank pre-approves you for a certain amount, you should spend that much on a property.
Banks use general formulas that do not account for your personal lifestyle costs, travel plans, or future childcare expenses. Spending to your absolute limit leaves you vulnerable to rate hikes and financial stress.
2. Keeping High Credit Card Limits
In Australia, lenders calculate your borrowing capacity based on the credit limits of your cards, even if you pay the balance in full every month or never use them.
For example, a credit card with a $10,000 limit can reduce your borrowing capacity by up to $30,000 to $40,000. It is wise to close unnecessary credit cards or reduce limits before applying.
3. Ignoring the Impact of Lenders Mortgage Insurance (LMI)
If you borrow more than 80% of the property value (LVR), you must pay Lenders Mortgage Insurance (LMI).
LMI protects the bank, not you, and can cost thousands of dollars. Failing to budget for LMI or not realizing it can be capitalized (added) to the loan balance is a common mistake.
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Go to calculator →Frequently asked questions
What is the difference between an offset account and a redraw facility?
An offset account is a separate transaction account linked to your home loan where savings offset the principal interest. A redraw facility allows you to withdraw extra payments you have made directly into the loan account. Offset accounts offer more flexibility but may carry fees.
Does a HECS-HELP student debt affect my borrowing capacity?
Yes, Australian lenders factor HECS-HELP repayments into your net income calculation, which can significantly reduce your borrowing capacity since repayments are deducted directly from your salary.
Educational content only—not mortgage, tax, or legal advice. Confirm any decision with a licensed professional in your jurisdiction.