Interest withholding tax for overseas investors in Australian mortgages

Interest paid to an overseas investor from an Australian mortgage loan is generally subject to interest withholding tax at 10%, taken from the interest before it is paid. It is normally a final Australian tax, and tax treaties rarely lower it. The practical work is in the paperwork, not the rate.

HomeSec Business Finance, an Australian private lender founded in 2004, invites wholesale investors from anywhere in the world to co-fund individual loans. This guide covers the tax side of that, in general terms, so you know what to ask your accountant before you read a loan pack. For the wider picture, start with our page on investing in Australian mortgages from overseas.

What is interest withholding tax, and who pays it?

Interest withholding tax is Australian tax collected at the source. When interest is paid to a foreign resident, the payer holds back a percentage and sends it to the ATO, and the investor receives the rest. The rules sit in section 128B of the Income Tax Assessment Act 1936, and the ATO’s withholding rate page sets the rate for interest at 10%.

The tax is on the investor, but the legal duty to withhold sits with the person paying the interest. That is why the practicalities matter. Who withholds, how the amount is shown on your records, and how it reaches the ATO are things to confirm with our Funding Manager and your tax adviser before your first loan, not when the first payment arrives.

Do tax treaties lower the rate?

Mostly not, and this surprises many investors. Australia has agreements with over 40 countries, and it is natural to assume one cuts the rate. On interest, the ATO’s own table shows 10% in both the treaty and non-treaty columns. Where treaties do something, it is usually a specific exemption for certain circumstances, such as particular financial institutions, rather than a lower everyday rate for a private lender.

So the sensible planning assumption for an individual, company or family trust lending directly is 10%. If you think a treaty gives you a better outcome, ask your adviser to show you the article and the test you would satisfy, in writing, before you rely on it.

Is the withholding tax final?

Generally, yes. For interest, the withholding is intended to be the end of the Australian tax story, so many non-residents with no other Australian income do not lodge an Australian return for it. The ATO’s guidance for foreign resident investments is the place to check your own case.

Two things can change that. If you have other Australian-source income, such as rent or a business, you may have to lodge for that income anyway. And if you are an Australian who has moved abroad, your residency status is the starting point for everything, so settle it with an adviser first. The same interest that attracts a flat 10% for a non-resident is taxed at ordinary rates for a resident.

When does the obligation to withhold start?

Earlier than many people expect. The ATO says a payer should withhold when it pays interest, credits it to the foreign resident’s account, or deals with it at the direction of either party. It adds that an obligation can arise even where the interest has not actually been paid.

For a short term loan, that matters for timing. Loans on this programme run from 1 to 12 months, so interest is earned and settled within a year, and the withholding falls into the same short window. An investor who expects a round-number payment at maturity should expect the net figure instead.

What does 10% look like in dollars?

Illustrative example: you put $250,000 into one loan, and over its term the interest earned is $12,000. At 10% withholding, $1,200 goes to the ATO and $10,800 reaches your account, alongside your $250,000 principal when the loan is repaid. Principal is not subject to withholding; only the interest is.

The actual interest depends on the loan, because returns are set loan by loan and shown in each pack. Our returns page explains the range of 12% to 18% p.a. on the loans you choose and why short terms and speed explain the gap to bank deposits. When you compare, compare after withholding and after whatever your home country adds.

What about GST and your home country’s tax?

GST is the easy part. The ATO treats lending as a financial supply that is input-taxed, so no GST is added to the interest.

Your home country is the open question. Most countries tax their residents on worldwide income, and many give a credit for foreign tax already paid, though the rules and limits vary. Because Australia’s 10% is generally final, the question is whether your country credits it fully, partly or not at all. That is a local-adviser question, and it can move your real return more than the Australian rate does.

What should an overseas investor sort out before funding?

A short checklist:

If you would rather see a real pack before you brief your adviser, you can ask for a sample loan pack and work through the numbers with it in hand.

What mistakes do overseas investors make with withholding?

Three come up again and again, and each is cheap to avoid.

1. Comparing gross with net. A headline return looks different once 10% of the interest is withheld and your home country adds its own tax. Put every option, including term deposits and pooled funds, on an after-tax basis before you decide.
2. Assuming a treaty applies. As above, the ATO’s table shows 10% for interest either way. A treaty exemption is a specific test, not a general discount.
3. Leaving residency vague. Australians who have moved abroad, and non-residents who spend part of the year here, often have a status that depends on facts such as where they live and work. Withholding follows residency, so get your adviser’s view in writing early. Changing status mid-loan is much harder to untangle.

A fourth, smaller point: keep the withholding records. If the ATO or your home tax authority asks how much Australian tax was paid on your interest, a clean record from each loan answers the question in minutes.

On wholesale status, see how it works for non-residents in our guide to wholesale investors. To see how a co-funded loan runs from pack to repayment, read how it works.

Does withholding change how pooled funds compare?

It can. Investors in a pooled mortgage fund or trust often receive distributions after the fund has netted fees and costs, and the tax treatment of a non-resident’s share depends on the structure. If you are weighing the two routes, our guide to what a mortgage fund is explains the structures, and the difference is worth asking about directly.

With direct co-funding there is no pool. You are named on the registered mortgage for your exact contribution, and principal and interest are paid to your own bank account. That makes your tax position easier to trace. You know which loan produced which interest, and your adviser can work from a single document trail.

Ready to look at a loan from overseas?

Plenty of overseas investors hold back because the tax looks harder than it is. It is a flat rate, mostly final, and a short list of questions for your adviser. If you would like to see what a loan pack looks like, and how the numbers read after withholding, a conversation costs nothing.

Registering takes about a minute and does not involve a credit check, so your credit file is not touched just for asking. We don’t pass your details around a panel of other lenders or investors. A real person on our team, our Funding Manager, looks at your situation and calls you at a time that suits your time zone. Please fill in the form accurately, including your country of residence and the entity you would invest through, so we can answer your questions first time.

Whenever you are ready, register your interest and ask for the next loan pack →