Your Second Loan: Offset Accounts, Splits and How to Structure It
Offset accounts, split loans and keeping your debts separate. How to set up your investment loan sensibly from the start.
The short version
- How you set up your loans matters as much as the rate.
- An offset account reduces the interest you pay while keeping your cash accessible.
- A split loan can let you mix fixed and variable rates.
- Keeping your investment debt separate from your home loan makes tax time simpler. Always confirm the details with your accountant.
Buying your first investment property is exciting. But the loan setup can quietly shape your costs and your choices for years. Here are the main structure options, in simple terms.
Offset account
An offset account is a bank account linked to your loan. The balance in it is subtracted from your loan balance when interest is calculated. If you owe $500,000 and have $50,000 in offset, you pay interest on $450,000.
- You can still reach your money.
- It can help you reduce interest without locking your cash away.
- It often works best on a loan where you have savings you want to keep handy.
Split loans
You can split a loan into two or more parts. For example, one part on a fixed rate and the other on a variable rate with an offset. This gives you some certainty and some flexibility. It can be a good option when rates are moving, as they are now.
Interest-only or principal and interest?
| Interest-only | Principal and interest | |
|---|---|---|
| Repayments | Lower, for the interest-only period | Higher, because you also pay down the loan |
| Loan balance | Stays the same | Goes down over time |
| Rate | Often a little higher | Often a little lower |
| Good for | Keeping cash flow free, or paying down your home loan first | Building equity faster |
Interest-only periods usually have a time limit, and after that, repayments rise. Ask how that would affect you.
Keep your loans separate
When you buy your second property, it is usually cleaner to keep your home loan and your investment loan separate. One reason is that interest on money borrowed for an investment may be deductible, while the interest on your own home is not. Mixing the two can make records messy.
It is also worth asking how the loans are secured. When the same property secures more than one loan (called cross-collateralisation), you can end up with less flexibility and a lender with more control over your assets.
Tax rules depend on your situation. Before you set up a loan, talk to your accountant about how it will be treated. We look after the lending side, and we will not give tax advice.
Get the Investor Serviceability Playbook
Plan your next purchase, understand how lenders look at your loans, and set them up well from day one.
Send me the playbookWe will email it straight to you.Your next steps
- Decide whether you want flexibility, certainty or both.
- Ask your accountant how the loan should be set up for tax.
- Book a chat so we can map out the structure with you.
Sources and when we checked
Figures checked on 16 October 2026. Sources: ASIC MoneySmart (offset accounts, interest-only loans); Australian Taxation Office (rental property deductions, general guidance). General information only; speak to your accountant about tax. Rules, rates and thresholds can change, so confirm with the official sources or a broker before you act. This article is general information only and is not personal advice.
Want to talk it through?
Book a chat with Richard. He will listen first, then explain your options clearly. No pressure, no jargon.
This article is general information only and does not take into account your personal financial situation, needs or objectives. Consider whether it is appropriate for you before acting on it. Figures and rules can change, so always check the latest details with the relevant authority.
Richard Morris is a Credit Representative (CRN 570376) of Strategic Mortgages Perth (ACR 570592), authorised under Connective Broker Services Pty Ltd (Australian Credit Licence 389328). This is not tax or legal advice. Please speak to your accountant or solicitor about your own situation.