Offset Accounts: Do You Know How They Work?

An offset account sits alongside your home loan and reduces the interest charged on your loan balance by the amount you hold in the account.

For Queensland public sector employees on stable income, an offset account can be one of the more useful features to carry on a variable rate home loan. Your savings sit in a transaction account where you can still access them, but they work to reduce your loan interest every day. A borrower with a loan balance of $450,000 and $30,000 sitting in a linked offset account pays interest on $420,000. Over a full year at current variable rates, that saves thousands in interest without locking money away or changing how you access your pay.

How a Linked Offset Account Reduces Interest

Interest on a variable rate home loan is calculated daily on the outstanding loan balance. A linked offset account reduces that balance for the purpose of the interest calculation without reducing the principal you owe.

Consider a buyer who settles on a property with a loan of $480,000 and keeps $25,000 in a full offset account from day one. The lender charges interest on $455,000 instead of the full loan amount. If that $25,000 sits in the account for the entire first year, the borrower pays a full year's interest on a balance $25,000 lower than the actual loan. That amount continues to save interest every day it remains in the account. Each dollar in the offset works as hard as an extra repayment would, but the money stays available.

Do All Offset Accounts Work the Same Way?

No. Full offset accounts reduce your loan balance dollar-for-dollar for the purpose of interest calculation. Partial offset accounts apply only a percentage of the balance, typically 40 per cent to 60 per cent, which means they deliver less benefit.

Most lenders offering home loan packages to public sector employees provide full offset as a standard inclusion on variable rate owner-occupied and investment loans. Some lenders charge an annual package fee for access to offset, while others waive the fee at certain loan amounts or for specific professions. It pays to confirm whether the offset is full or partial and whether the package fee structure makes sense for the balance you expect to hold. A $395 annual fee on a package with a full offset account still delivers value if you maintain a balance of $20,000 or more, but may not suit borrowers who expect to hold less than $10,000 most months.

Offset Accounts and Split Loan Structures

You cannot link an offset account to a fixed rate portion of a home loan. Offset works only with variable rate loans, so if you split your loan between fixed and variable, the offset applies only to the variable portion.

In our experience, Queensland public sector employees often split their loan 50/50 or 60/40 between fixed and variable. If you hold $400,000 in total borrowings and fix $240,000 at a locked rate, the remaining $160,000 sits on a variable rate with offset available. A $20,000 offset balance reduces the variable portion to an effective $140,000 for interest calculation purposes, but the fixed $240,000 remains unchanged. Offset benefits increase as you pay down the fixed portion and revert those funds to variable, or as you direct more of your repayments to the fixed loan and let the variable balance sit higher with offset working against it. Borrowers seeking certainty on repayments while still benefiting from offset flexibility should speak to a broker about structuring splits to match salary patterns and savings behaviour.

Does Offset Affect Your Borrowing Capacity?

Offset accounts do not directly increase how much you can borrow, but they do show genuine savings when a lender assesses your application.

Lenders calculate borrowing capacity based on your income, existing debts, living expenses and the serviceability buffer. If you hold $30,000 in an offset account at the time of a new application or refinance, that amount is treated as genuine savings and supports your deposit position. For buyers using low deposit loans or applying under the 5% Deposit Scheme, funds held in offset on an existing loan can be redeployed as a deposit without needing to sell or refinance the original property. Offset also reduces the net interest cost on your existing loan, which improves your debt servicing position when applying for a second property or increasing your loan for renovations.

Can You Use Offset on Investment Property Loans?

Yes, and doing so requires care if you want to keep your tax deductions intact.

When you use an offset account linked to an investment property loan, you reduce the interest charged on that loan. Lower interest means a lower deduction. The offset balance itself does not affect deductibility, but how you use the money does. If you withdraw funds from an offset account linked to an investment loan and use those funds to purchase a new owner-occupied property, you have not borrowed for investment purposes and cannot claim a deduction on any new loan taken for that purchase. The original investment loan remains deductible, but only on the reduced balance after offset is applied. Speak to an accountant and your broker before moving offset funds between properties or loan purposes to avoid unintended tax outcomes. Offset accounts work well for investment loans when used to park rental income, tax refunds or other funds while keeping them accessible and continuing to reduce interest on the loan.

Offset Compared to a Redraw Facility

A redraw facility allows you to withdraw extra repayments you have made on your home loan. An offset account keeps your funds separate from the loan entirely.

Some lenders restrict how often you can redraw, charge fees per transaction, or require a minimum redraw amount. Offset accounts function as transaction accounts with full access via card, transfer or direct debit in most cases. If you make an extra $10,000 in repayments to a loan with redraw, that amount reduces your principal and you pay less interest going forward. If you then redraw that $10,000, your loan balance increases again and interest rises accordingly. With offset, the $10,000 never touches the loan balance. You reduce interest while the funds sit in the account, and you can move that money in and out without affecting your principal or triggering a redraw process. For borrowers who value control and liquidity, offset provides more flexibility than redraw, though both reduce interest when funds are held against the loan.

What About Offset on Fixed Rate Loans?

Fixed rate home loans do not support offset accounts. The interest rate and repayment amount are locked for the fixed term, and the lender does not allow you to reduce the interest calculation by holding funds in a separate account.

If offset is a priority, structure your loan as variable only or as a split loan with offset attached to the variable portion. Borrowers who fixed their entire loan balance during the recent rate rise period and now hold savings in an account earning minimal interest should consider whether refinancing to a split structure makes sense once the fixed term ends or if break costs are low enough to justify an early exit. Your broker can model the benefit of moving to a structure that includes offset against any costs involved in changing your loan.

Call one of our team or book an appointment at a time that works for you. We work with lenders who provide full offset accounts on variable and split loan structures for Queensland public sector employees, and we will walk through how offset fits with your income, savings and property plans.

Frequently Asked Questions