When you move out and rent your first home, the interest on its original loan generally becomes deductible. Money you redraw from that loan to buy the next home does not.
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Keeping your first home as an investment property can turn its existing loan into deductible debt, because the money bought a property that now earns rent. The trap is paying that loan down, then redrawing for the next deposit: the redrawn part funds a private home and is not deductible. Holding savings in an offset instead keeps the full loan deductible once you move. The CGT main residence exemption can continue for up to six years while the home is rented.
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Interest is deductible when the borrowed money is used to produce assessable income. The loan on your first home bought the home itself. While you lived there, that use was private. Once the property is rented, the same borrowing funds an income-producing asset.
The ATO's own example makes the point. A couple keeps their old home, rents it out and borrows for a new one. Interest on the original home loan is deductible from when the property is rented. Interest on the new home loan is not, even if the rental is used as security. This is the same purpose test that sits behind debt recycling.
So the deductible amount is whatever is left of the original borrowing on the day you move out. The more you paid it down, the smaller the deduction. Our investment property lending starts from that balance.
The most common mistake is paying the first loan down hard, then redrawing that money for the next deposit. Redraw is new borrowing, judged by what it is used for. Used for a home you live in, it is private.
Illustration only: you borrowed $450,000 to buy your first home and paid it down to $300,000. You redraw $150,000 for the deposit on your next home, then rent out the first. The loan is back to $450,000, but only the $300,000 tied to the original purchase is deductible. The $150,000 redraw is private.
The account is now mixed purpose. The ATO says you cannot choose to repay only the private part, so every repayment reduces both portions in proportion, and the interest has to be apportioned for the life of the loan. Our guide to redraw contamination explains why this is so hard to undo.
An offset account saves the same interest as an extra repayment while you live in the home, but the loan balance does not fall. Your savings remain your money, not borrowed money.
| Same savings of $150,000 | Held in offset | Paid onto loan, then redrawn |
|---|---|---|
| Interest saved while living there | Same | Same |
| Loan balance at move-out | $450,000 | $300,000, then $450,000 |
| Deductible once rented | $450,000 | $300,000 |
| Private debt inside the loan | Nil | $150,000 |
| Records needed | Simple | Apportionment for life |
If there is any chance you will keep the home as a rental, an offset is usually the safer place for savings. Confirm the treatment with your registered tax agent before you move.
Many people only decide to keep the first home after years of extra repayments. The paid-down amount cannot be made deductible after the fact by redrawing or refinancing, because any new borrowing is judged by what it buys.
What you can do:
That last step is where our lending for property investors often comes in, setting up splits on the new home so recycling stays clean.
If you sell rather than keep, our guide on selling the home mid-strategy covers the other path.
Keeping the first home means the new loan has to service on top of the existing one. How a lender treats the existing debt and the rent often decides how much you can borrow.
In one of our client case studies, a site manager on a $165,000 base salary bought a $1,175,000 home while keeping his first property, rented at $815 a week. The $42,380 a year in rent was used for servicing, and a $280,000 gift plus $149,000 in savings funded the contribution. The $800,000 loan at 68% LVR was approved inside a 14-day finance clause.
At the time of that application, the chosen lender assessed his existing home loans on actual repayments, which gave him more capacity than lenders using a buffered rate. Policies vary and change, so the right lender depends on your numbers at the time.
Structure matters as much as approval. If the new home loan is secured partly by the rental, it is still private debt, because the ATO looks at what the money bought rather than the security. Keep it in separate splits from the investment loan, ideally with separate repayment accounts, so your tax agent can see each purpose at a glance.
Some lenders will want both properties as security for the new loan. Others can keep each loan secured by its own property, which makes a later sale or refinance simpler. The right setup depends on your equity and the lender's policy at the time.
The ATO lets you keep treating a former home as your main residence for up to six years after you move out if you rent it. Leave it vacant instead and the period is unlimited.
This means choosing which home is your main residence. Your new home will usually be the one you want exempt over the long run, so the choice deserves a conversation with your tax agent. A valuation at move-out is cheap insurance.
We structure the lending, coordinate with your adviser and accountant, and tell you plainly when debt recycling is not the right fit.
Book a free call →From 1 July 2027, losses on established residential property bought from 7:30pm AEST 12 May 2026 can only be offset against residential property income, including capital gains. Properties held before that time, and new builds, are exempt.
A first home bought before budget night keeps the existing treatment. If yours was bought after that time and is now becoming a rental, ask your tax agent how the change applies. The main residence exemption continues under the reforms.
Move surplus cash into an offset rather than onto the loan once keeping the home is a real option.
Use savings or a new loan split for the next home, never a redraw from the first loan.
Some owners switch the investment loan to interest-only to keep the deductible balance higher. Lender rules vary, and your adviser can weigh the cash flow trade-off.
Record the loan balance and market value on the day the home is first rented, and keep loan statements from then on.
Generally yes, for the balance still relating to the original purchase. The ATO looks at what the borrowed money was used for, and once the property earns rent, that loan funds an income-producing asset. Any part you redrew for private purposes is not deductible. Your tax agent confirms the amount.
No. Redrawn money is new borrowing, and the purpose is the new home you will live in, so the interest on that portion is private. It also makes the loan mixed purpose, which means apportioning interest for as long as the loan exists.
The ATO lets you treat a former home as your main residence for up to six years while it earns rent, provided you do not treat another property as your main residence over that time. The six years apply to each absence. Your tax agent can confirm how it fits your plans.
If you may keep the first home as a rental, holding savings in an offset is usually better than extra repayments. The offset saves the same interest while you live there, and the full loan can be deductible once the property is rented. Paying it down permanently shrinks the deductible balance.
Many lenders allow a switch to interest-only on an investment loan, subject to their policy and an assessment of your situation. It keeps the deductible balance higher for longer, though you pay more interest overall. Your adviser can weigh it against your other goals.
Written and updated byAlex GeeDirector & Mortgage Broker, Kingfisher Finance Group
Reviewed byJessica MaraisMortgage & Finance Broker, Kingfisher Finance Group$1.175M home approved while keeping the first as a rental.
Read more → GUIDEWhy a single redraw can mix a loan's purpose for life.
Read more → RESOURCEA one-page check before you draw on any loan.
Read more →
1. Arranged a loan when our small business situation made it difficult to qualify.
2. Met requirements to have funding available by a specified date.
3. Understood my needs to setup debt recycling to allow tax structuring.
4. Communicated well throughout.
I would use their services again.
Alex, Jess and the Kingfisher team were second to none and their process from start to finish was faultless. As a self-employed business owner, it can be difficult to obtain finance at the best of times. The Kingfisher team made this an easy and efficient proposition and their continued transparent and efficient communication ensured we were kept up to date at all times. Highly recommend them for your finance needs!
Alex and Jess dealt with our investment loan and provided a top tier service. They kept us up to date and communicated every step of the process making it a seamless and smooth experience! Awesome work team we will definitely be back for future loans!
Jess from Kingfisher was outstanding. I couldn't fault her communication, expertise or dedication to finding the best loan for our situation. The entire process was seamless from start to finish. We'll definitely be using Kingfisher again in the future. A top-tier organisation.
