If you have a variable-rate mortgage in Australia, you've almost certainly been offered both an offset account and a redraw facility — sometimes free, sometimes wrapped inside a package fee. They look like the same thing wearing different hats. They are not. The headline interest saving is the same. The tax treatment, the access rules, the legal status of the money, and the bank's discretion over it are all different. Get the choice right and you protect tens of thousands of dollars of future tax deductibility. Get it wrong and you discover the problem years later, at the worst possible time.
This article walks through how each one actually works, where the real differences are, and three worked examples at the May 2026 average variable rate of 5.66%. You can sanity-check the numbers in our mortgage calculator as you read.
What each one is, in one paragraph
An offset account is a separate deposit account, in your name, linked to your home loan. The balance is subtracted from the loan balance before daily interest is calculated. You still own the money — it's a normal transaction account with a debit card, BPAY, PayID, the lot.
A redraw facility is not a separate account. When you pay more than your minimum scheduled repayment, the extra goes into the loan and reduces the principal. The redraw facility is your right to later take some of that money back out, up to a limit, subject to the lender's conditions.
That difference — separate account versus inside-the-loan — is the source of every other difference that follows.
The interest saving is the same. The rest is not.
At the same loan balance and the same interest rate, $10,000 sitting in an offset account saves you the same daily interest as $10,000 of extra repayments in a redraw facility. The maths is the same.
What's different:
| Offset | Redraw | |
|---|---|---|
| Legal status of the money | Yours, in a deposit account | Paid into the loan; you have a right to redraw |
| Tax — owner-occupier | No impact | No impact in itself |
| Tax — investor or future investor | Clean; preserves deductibility | A future redraw for personal use can permanently destroy deductibility |
| Access speed | Instant — debit card, BPAY, transfers | Usually 1–3 days; lender approval, daily caps |
| Lender discretion | None — it's your bank account | Yes — lender can reduce available redraw |
| $250k FCS deposit guarantee | Covered | Not covered |
| Typical cost | Often inside a $395 package fee, or free at challenger lenders | Free at most lenders on most variable products |
The big single item on that list — the one that matters most for any borrower who might one day own an investment property — is tax.
The tax trap that catches investors and future investors
The Australian Taxation Office is very clear on this. ATO Tax Ruling TR 2000/2 says that when you make an extra repayment into your loan, the money is gone — it has reduced your debt. If you later "redraw" some of it, you are not retrieving your savings. You are taking out a new loan. Whether the interest on that new borrowing is tax-deductible depends entirely on what you spend the redrawn money on (ATO TR 2000/2, paragraphs 22–25 and 43).
For a pure owner-occupier this rarely matters in practice — you have no deductible interest to protect. For anyone who could one day convert their property to a rental, it matters enormously. Here's the scenario that catches people.
Worked example — Investor or future investor
A borrower buys a Perth property for $600,000 with a $500,000 loan at 5.66%. Over five years they put an extra $50,000 into the loan via redraw. After five years, their normal P&I repayments have reduced the balance to roughly $463,000.
They now move out and rent the place out — a perfectly common reason being a transfer to Sydney, an upsize, or a relationship change.
If the extra $50,000 sat in an offset account: the loan balance was always $463,000 of "real" debt and $50,000 of offset savings. They withdraw the $50,000 from the offset for a deposit on their next home. The loan against the rental, now $463,000, is fully deductible. Annual deductible interest: about $26,200. Nothing has been contaminated.
If the extra $50,000 went into redraw: the loan balance is genuinely down to $413,000. They redraw $50,000 to put towards their next home — a personal-use purpose. Per TR 2000/2 paragraph 24, that redrawn $50,000 is a new non-deductible borrowing. Only $413,000 of the rental loan is deductible. The $50,000 is permanently non-deductible — no amount of moving money around afterwards fixes it.
At a 37% marginal tax rate, the lost deduction is about $1,047 per year, every year, for the life of the loan. At 45%, about $1,274 per year. Over 25 remaining years on the loan, that's $26,000–$32,000 of tax refunds gone. For a one-off choice made years earlier between two products that looked equivalent.
This is the single most important reason offset wins for any borrower who might end up owning an investment property — and in Australia, that's a lot of people.
Fees — when offset is worth paying for
The traditional big-four model is to bundle offset inside a wealth or advantage package for around $395 a year, in exchange for a discount off the standard variable rate. CBA's Wealth Package, Westpac's Premier Advantage, NAB's Choice Package and ANZ's Breakfree are the canonical examples (CBA Wealth Package, Westpac Premier Advantage). ING's Orange Advantage is similar at $299 (ING).
The break-even maths is simpler than it sounds. At 5.66%, you need the offset to save more in interest than the fee costs:
Break-even balance = annual fee ÷ interest rate $395 ÷ 5.66% ≈ $6,979
Maintain an average offset balance of about $7,000 over the year and the fee pays for itself in interest savings alone. That is well within reach of most households with an emergency fund.
The bigger question now is whether you need the package at all. The free-offset landscape has shifted significantly. Macquarie charges no annual package fee and offers a 100% offset account (Macquarie Offset Home Loan). ubank, Unloan and Up Bank are in similar territory (ubank rates). On the variable rates published in May 2026, the headline rate at these lenders is competitive with the big-four package rate, with no fee to recover.
If you are already on a big-four package and the rate is genuinely sharp after the discount, the fee is fine. If you are choosing a new loan today, free-offset lenders should be on your shortlist before you assume a $395 package is the only path to an offset account.
Access — the difference that shows up in an emergency
An offset account is a normal transaction account. The money is there, instantly, via card, BPAY or transfer. Whatever sits in your offset on any given day reduces interest charged that day, then can be spent the next day with no notice and no approval.
Redraw is a loan transaction. Even when the lender's app shows the balance, a redraw is processed against the loan — typically with 1–3 business days for funds to clear, often with daily caps (St.George caps online redraws at $100,000 a day; St.George), and always with the lender's discretion behind it. In April 2020, ME Bank unilaterally reduced redraw balances for about 21,000 customers without warning, reverting to original amortisation schedules. ASIC investigated, ME Bank reversed it, but the precedent matters: the contract gave the lender that right (ASIC opening statement).
There is also the deposit guarantee. The Financial Claims Scheme — the $250,000 government guarantee that kicks in if an ADI fails — covers offset accounts because they are deposit accounts. It does not cover redraw balances, because those balances are sitting inside a loan, not in a deposit account (APRA FCS FAQ).
For an emergency fund, this matters. Offset wins on every dimension that matters in a crisis.
Three worked examples at 5.66%
Scenario A — $500,000 variable loan, $20,000 sitting in savings, owner-occupier
Daily interest saved by offsetting $20,000:
$20,000 × 5.66% = $1,132 in the first year, ignoring P&I principal effects.
Over 30 years, with the same $20,000 maintained on average in offset, the loan finishes roughly 2 years 3 months earlier and saves around $50,000 in total interest compared with no offset. Redraw at the same balance achieves the same saving — at this scale, the choice is about flexibility and fees, not interest.
Scenario B — $500,000 loan, $50,000 average offset balance
$50,000 × 5.66% = $2,830 saved in the first year.
Maintain the $50,000 average and the same loan finishes roughly 5 years early, saving close to $175,000 in total interest. Again, redraw produces the same saving in pure interest terms. What you are buying with offset over redraw is the option value — instant access, no lender discretion, and clean tax treatment if your circumstances change.
Scenario C — owner-occupier who converts to investment after 5 years
This is the scenario that decides the choice for many Australians. Same $500,000 loan. Same $50,000 of extra contributions over 5 years. Same decision to convert to a rental after 5 years and redraw the $50,000 to put towards a new home.
| Offset path | Redraw path | |
|---|---|---|
| Loan balance at conversion | $463,000 + $50,000 offset | $413,000 (after $50k redraw out) |
| Deductible loan amount | $463,000 | $413,000 |
| Annual deductible interest at 5.66% | $26,200 | $23,400 |
| Lost deduction | — | $2,830 per year |
| Tax refund lost at 37% | — | $1,047 per year |
| Over 25 remaining years (37%) | — | ~$26,000 |
| Over 25 remaining years (45%) | — | ~$32,000 |
Same money. Same property. Same loan. Different product choice, different five-figure outcome.
Common mistakes
- Treating redraw as savings. It is not. It is a contractual right to a new borrowing. Use it for owner-occupier extra repayments if you have no realistic chance of converting the property to a rental, but never park your "emergency fund" in there.
- Leaving offset at zero out of habit. Salary paid into a normal transaction account does nothing for your loan. Salary paid into an offset account works from day one — even the few days between payday and bill pay matter.
- Not asking about free-offset lenders. If you're refinancing in 2026, get at least one quote from a no-package-fee lender. The break-even maths assumed $395 a year; at $0, it always wins.
- Picking a fixed loan that doesn't allow offset. Most fixed-rate loans don't offer 100% offset. If you want to fix and still offset, split the loan — fix half, keep half variable with full offset on the variable portion.
When fixed-rate plus redraw can still make sense
If fixed rates are well below variable rates, the rate differential can outweigh the flexibility benefit of variable-plus-offset. In May 2026, the cash rate sits at 4.35% and the average variable owner-occupier rate is around 5.66% (RBA Table F6). Most fixed rates on offer are close to or above variable, so the case for fixing purely on rate is thin right now. Where fixed makes sense is for budget certainty, not interest saving.
If you do fix, expect redraw with a cap (often $10,000–$30,000 over the fixed term) and no offset on the fixed portion. A split loan — variable with offset for flexibility, fixed for certainty — is usually the cleanest answer when both matter.
The default that works for most Australians
For most owner-occupiers on a variable loan, the right default in 2026 is:
- 100% offset account on a variable loan — fee-free if a competitive challenger offers one, package fee if the big-four's discount is genuinely sharp.
- Build the offset to roughly 6 months of household expenses before doing anything else with surplus cash. This is your emergency fund and your interest saving rolled into one.
- Pay your salary into the offset so it works from day one of every pay cycle.
- Treat redraw as a feature you have but rarely use — fine for genuinely paying down the loan, dangerous as a savings store if you might ever convert to an investment.
For investors, the default is simpler: 100% offset, always. Never use redraw on an investment loan unless your accountant has signed off on a specific apportionment plan.
A short reminder on advice
This article describes how offset and redraw products generally work in Australia in 2026 and how the ATO and APRA treat them. It is not personal tax, credit or financial advice. Your situation — your tax residency, your marginal rate, whether you're investing through a trust, your lender's specific product terms — can change the answer. For anything involving deductibility and your particular loan, speak to a registered tax agent and a licensed mortgage broker before you act.
For the source rulings, see ATO TR 2000/2 on redraw deductibility and APRA's Financial Claims Scheme FAQ on which accounts are protected.