Australian home loans come with a range of features that lenders use to differentiate their products and justify higher fees. Some features — particularly offset accounts — have genuine, quantifiable value. Others are either minor conveniences or tools that banks use to recover margin. This article explains what each major home loan feature does, how to calculate whether it is worth paying for, and which combination makes sense depending on your situation.
An offset account is a transaction account linked to your mortgage. The balance in the offset account is subtracted from your outstanding loan balance for the purpose of calculating interest. If you have a $600,000 mortgage and $40,000 sitting in your offset account, you pay interest on $560,000 rather than $600,000.
At a mortgage interest rate of 6.0%, $40,000 in an offset account saves you $2,400 in interest per year. Compared to keeping that $40,000 in a high-interest savings account earning 5.0%, the after-tax savings in the offset account are typically superior — interest saved on a mortgage is not taxable, whereas interest earned in a savings account is taxable at your marginal rate. For someone on a 34.5% marginal rate (including Medicare levy), a 5.0% savings account yields effectively 3.28% after tax. The 6.0% offset benefit wins by a significant margin.
The offset account is the single most valuable home loan feature for borrowers who regularly maintain a savings balance. The value compounds over the life of the loan — not just in interest saved each year, but in reduced loan term if minimum repayments are maintained.
Offset accounts are typically only available on variable rate loans. Fixed rate offset accounts exist but are uncommon — most lenders either do not offer them or cap the benefit (e.g., offset on up to $10,000 of the fixed component). If you want the full offset benefit, it requires a variable rate or a split loan where the variable portion has an offset account.
A redraw facility allows you to make extra repayments on your mortgage and then withdraw those extra funds later. If your minimum monthly repayment is $3,000 and you pay $3,500, the extra $500 is available to redraw. Redraw provides interest savings on the extra repayments (the same arithmetic as an offset), but with one critical difference: the funds are at the lender's discretion to allow access, and lenders have the legal right to reduce or remove redraw access, particularly during hardship conditions.
During COVID-19 in 2020, several lenders reduced their borrowers' accessible redraw balances without warning, citing economic conditions. This is legally permissible because extra repayments are technically a repayment of the loan principal, not deposits in a separate account. Offset account balances, by contrast, are held in a bank account and protected by the Financial Claims Scheme (up to $250,000 per authorised deposit-taking institution).
Redraw is better than nothing and appropriate if you want to make extra repayments without committing to them permanently. It is inferior to an offset account for anyone who maintains a meaningful balance and may need to access funds at short notice.
| Feature | Interest saving mechanism | Access to funds | Protection |
|---|---|---|---|
| Offset account | Balance reduces interest daily | Instant (it's a bank account) | FCS protected up to $250k |
| Redraw | Extra repayments reduce interest daily | Usually instant, but lender can restrict | Not separately protected; part of the loan |
Fixed rate loans lock your interest rate for a defined term (typically 1–5 years in Australia) after which the loan reverts to a variable rate. Variable rate loans move with the lender's standard variable rate, which follows the RBA cash rate with some lag and discretion. The trade-off is certainty vs flexibility.
Fixed rates trade flexibility for predictability. During the fixed term, you typically cannot make extra repayments beyond a cap (usually $10,000/yr additional repayments), cannot access an offset account fully, and face a break cost (sometimes called break fee or economic cost) if you want to refinance or pay off the loan early. Break costs on fixed loans can run to tens of thousands of dollars depending on the rate movement and time remaining — they were a significant issue during the 2022-2023 rate rise cycle when borrowers who fixed at 2.0% wanted to exit.
The question of whether to fix is a rate outlook question as much as a cash flow question. In June 2026, with the RBA cash rate at 4.10% (following the February 2026 25bp cut from 4.35%), fixed rates for 1-2 years are broadly comparable to or slightly above competitive variable rates. The decision depends on your cash flow sensitivity and how much certainty is worth paying for. Source: RBA Statistical Table F5, May 2026.
A split loan divides your mortgage into two or more components with different rate types — most commonly a portion on fixed and a portion on variable. For example: $500,000 loan split as $300,000 fixed at 5.75% and $200,000 variable with offset. This gives you rate certainty on part of the loan (the fixed portion), flexibility and offset access on the variable portion, and reduced break cost risk compared to 100% fixed.
The split ratio is not regulated — you choose how much of the loan to fix. Borrowers who want certainty on core repayments but also want to use extra savings via an offset typically choose a split with the variable component sized to roughly match their savings balance.
Interest-only (IO) loans require only interest payments for a set term (1–5 years), after which the loan converts to principal and interest (P&I). Monthly repayments are lower during the IO period, but the loan balance does not reduce. After the IO period, P&I repayments on the original balance over a shorter remaining term are higher than if you had been repaying P&I from the start.
IO loans are primarily used by property investors (preserving cash flow, maximising the interest deduction which is fully tax-deductible for investment properties) rather than owner-occupiers. For owner-occupiers, IO extends the time before equity is built and typically costs more in total interest over the loan term. Lenders also price IO loans at a premium to P&I — typically 0.15–0.40% higher rate — which is sometimes misunderstood as the only cost. Source: APRA Authorised Deposit-taking Institution Statistics, 2025.
Many lenders offer "package" or "professional package" loans that bundle offset account, credit card, and other products in exchange for an annual fee (typically $395–$450/yr) and a discounted interest rate compared to the standard variable rate. For larger loan balances, the rate discount typically offsets the annual fee. On a $700,000 loan, 0.10% discount saves $700/yr — more than the annual fee. On a $200,000 loan, 0.10% saves $200 — less than the fee. The package makes sense at higher balances.
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