An offset account is one of the simplest and most effective tools an Australian borrower can use to reduce mortgage interest and pay off their loan faster. Here is exactly how it works and how to use it to your advantage in 2026.
What Is an Offset Account?
An offset account is a transaction account linked to your mortgage. The balance in the offset account is subtracted from your outstanding loan balance before interest is calculated. If you have a $600,000 mortgage and $50,000 in your offset account, you only pay interest on $550,000.
How Much Can an Offset Account Save Me?
| Loan Balance | Offset Balance | Interest Saved (6.2% p.a.) | Loan Term Reduction (est.) |
|---|---|---|---|
| $600,000 | $20,000 | ~$1,240/yr | ~1.5 years |
| $600,000 | $50,000 | ~$3,100/yr | ~3.5 years |
| $800,000 | $80,000 | ~$4,960/yr | ~4 years |
Estimates based on 6.2% p.a. variable rate, 30-year principal and interest loan. Source: RBA rate environment June 2026.
Partial vs Full Offset Accounts
A full offset account offsets 100% of its balance against your loan. A partial offset account only offsets a percentage (e.g. 40%). Always confirm you have a full offset account when comparing home loans.
Can I Use an Offset Account on an Investment Property?
Yes, but be careful. If you plan to convert your owner-occupied property to an investment property in future, keeping funds in an offset account (rather than redrawing extra repayments) preserves the deductibility of your loan. This is a critical tax planning point — speak to your accountant before making extra repayments vs offset deposits.
Offset Account vs Redraw Facility
| Feature | Offset Account | Redraw Facility |
|---|---|---|
| Accessibility | Instant — it is a transaction account | Subject to lender approval |
| Tax flexibility | Better for future investment purposes | Redrawn funds may lose deductibility |
| Interest saving | Identical if balance is the same | Identical if balance is the same |
| Fees | Some lenders charge a monthly fee | Usually free |
GeeVee Verdict
An offset account is a must-have feature for any variable rate mortgage in Australia. Park your salary, savings and any cash holdings in your offset account at all times. The interest saving is immediate and guaranteed. For investors, the offset account also preserves future tax flexibility in a way that extra repayments do not.
Frequently Asked Questions
Does an offset account affect my credit score?
No. An offset account is a transaction account linked to your mortgage. It does not appear separately on your credit file.
Can I have multiple offset accounts?
Some lenders allow multiple offset accounts linked to a single loan — useful for budgeting across different savings goals while all balances reduce your interest.
Is an offset account available on fixed rate loans?
Most lenders do not offer full offset accounts on fixed rate loans. Some offer a partial offset or a savings account with a cap. Variable rate loans almost universally offer full offset accounts.
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