Get an interest-only investment loan

An interest-only investment loan lets you minimise your monthly repayments (in the short term) while maximising your tax deductible costs. For the right investor it's a savvy strategy.

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Compare interest-only investment loan rates

The loans below have interest-only repayments. But the monthly payment column shows principal and interest repayments. Your initial repayments will be lower than what's shown here.
Name Product Interest Rate (p.a.) Comp. Rate p.a. Fees Monthly Payment Green Home Loan IOInvestment≥ 10% Deposit Green Home Loan
  • App: $0
  • Ongoing: $0 p.a.
This loan is only available for borrowers buying a property with a NatHERS energy efficiency rating of 7.0 or higher. An interest-only investment loan for the purchase of an energy-efficient property. Available with a 10% deposit. Low Rate Home Loan with Offset IOInvestment≥ 40% Deposit Low Rate Home Loan with Offset
  • App: $0
  • Ongoing: $0 p.a.
This competitive variable rate loan is for investors who want interest-only repayments. You will need a 40% deposit.

Speak to a broker about your options


Athena Variable Home Loan IOInvestment≥ 30% Deposit

Athena Variable Home  Loan
  • App: $0
  • Ongoing: $0 p.a.
Investors with 30% deposits can get this fee-free variable rate loan. This loan has interest-only repayments. Green Home Loan IOInvestment≥ 10% Deposit Green Home Loan
  • App: $0
  • Ongoing: $0 p.a.
Construction loan. This loan is available for investors building a property with a NatHERS rating of 7.0 or higher. Investors building an energy-efficient property can get a discounted rate on this green investment loan with interest-only repayments.

Nano Variable Home Loans IOInvestment≥ 20% Deposit

Nano Variable Home Loans
  • App: $0
  • Ongoing: $0 p.a.
This variable investment loan has interest-only repayments. Get fast online approval. Available for refinancers and existing buyers purchasing their next property. Requires a 20% deposit. Low Rate Home Loan with Offset IOInvestment≥ 20% Deposit Low Rate Home Loan with Offset
  • App: $0
  • Ongoing: $0 p.a.
A competitive rate with no application or ongoing fee. This loan is not available for construction.

Nano Variable Home Loans IOHome≥ 20% Deposit

Nano Variable Home Loans
  • App: $0
  • Ongoing: $0 p.a.
An interest-only loan for owner-occupiers with 20% deposits or equity. This loan has no fees. Available for refinancers and existing buyers purchasing their next home.

Athena Variable Home Loan IOHome≥ 30% Deposit

Athena Variable Home  Loan
  • App: $0
  • Ongoing: $0 p.a.
A variable loan with interest-only repayments for owner-occupiers with 30% deposits. This loan has no fees.

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This article was fact-checked and reviewed by , a property investment specialist whose book, My four-year-old the property investor, has sold more than 100,000 copies. Content has been updated for 2021.

Interest-only loans end up costing borrowers more in the long run. You delay repaying the full loan amount, which makes your repayments lower in the short term when you just repay the interest. This presents investors with an opportunity because interest payments are tax deductible (payments against the loan principal are not). Investors can use interest-only loans to pay less in the short term while cutting down their tax bill.

What is an interest-only investment loan?

Australia property investors have two options for making repayments on their investment loans.

1.) Borrow the money and repay it plus interest at the same time. This is called a principal-and-interest home loan (principal means the money you've borrowed).

2.) Borrow the money now and pay the interest charges, but avoid repaying the loan principal until later. This is called an interest-only loan.

Interest-only loans are way cheaper at the start because you're only paying interest. But you're not actually making any progress on your loan. This ends up costing you more money in the long run.

And yet it's a popular choice for investors in particular. And if you know what you're doing, an interest-only loan lets you lower your loan costs while maximising your tax-deductible expenses.

How interest-only loans benefit investors

Australian property investors have a tax advantage that home buyers don't. Interest on an investment home loan is tax deductible.

At the end of the financial year, you can deduct all of the interest you've paid on your investment property (along with a number of other tax-deductible property expenses) over the past 12 months.

Let's say you end up spending $20,000 on expenses such as:

  • Property maintenance and repairs
  • Council rates
  • Interest charges on the loan

Over the same time, you've had rental income of $16,000. Because your investment has cost you more than you made (to the tune of $4,000), you can deduct the loss from your taxable income.

Ultimately you want to generate profit your investment. But even your losses are tax deductible, which can really help you out in the short term. To learn more about how this works, read our guide on negative gearing.

Cut your short-term costs

Making interest-only repayments does cost you more in the long run. But what if you're short on cash right now? This could be because you've lost a job, or your property is without tenants and there's no rent coming in.

If you have an investment property but suddenly find you can't meet the principal-and-interest repayments, switching to interest-only could be a life saver.

Here's a simple example. Let's say you've borrowed $600,000 over 30 years with a rate of 2.30%.

Principal-and-interest repayments = $2,308 a month

Interest-only repayments = $1,150 a month

It will cost you more over the life of the loan, but switching to interest-only for a few months in this scenario would save you $1,158 a month.

Compound growth strategy

Some investors buy property with a high-growth strategy by choosing properties and locations they believe will grow quickly in value. Rather than holding the property for many years, renting it out and paying it off over time, these investors buy the property, minimise their repayments for a few years, then sell the property for a much greater amount than they paid.

For this strategy to work, an interest-only investment loan is essential because your repayments are much smaller at first.

Here's a completely hypothetical example. Let's assume bought a $700,000 investment property in a booming market. You had a 20% deposit, or $140,000. Your loan principal is therefore $560,000.

Assuming a 30-year loan and an interest rate of 2.30%, your monthly repayments on an interest-only home loan would be $1,073.

Now let's assume the investment grows in value at 7% per year for 4 years. You can sell the property for $917,000.

And in those 4 years you haven't paid off the loan at all, but you've only paid $51,504 in interest. Accounting for the original value and the interest paid, you still come out over $160,00 ahead.

Of course, this is very simplified example and doesn't include your selling costs and stamp duty, plus the capital gains tax if you sell. It also doesn't take rental income into account, which could offset the interest costs (and if the property costs you more than you made in rent you could reduce your tax bill).

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Cam McLellan is a property investment specialist, the co-CEO of OpenCorp and the bestselling author of My four-year-old the property investor.

How to use your investment properties to pay off your own home

"A key to building wealth is to hold the greatest value of assets, using the least amount of your own money. This is where interest-only loans come into play, as they can free up your cash flow. You are able to use that money to hold additional properties and this provides compound growth on your asset base. You are then able to grow wealth faster.

I'll use an end goal example of someone wanting to pay their own home off in 10 years and not 30 years, which is the time it would take if they were to pay off a principal-and-interest loan using their job earnings only.

To pay off your own home in a third of the time, you are required to also buy two well-chosen investment properties. Let's say each investment property costs $600,000 and has 100% debt; banks won't lend at 100%, but for simplicity, we'll use these figures (in real life, your debt would be lower and so these are "worst-case" scenarios).

Remember, improved cash flow from interest-only loans, tax breaks and rental income will help you pay for most of your loan repayments. We'll assume the remaining mortgage on your home is also $600,000.

  • Investment property debt x 2 = $1.2m ($600,000 each)
  • Family home debt = $600,000
  • Total property debt = $1.8m

Well-chosen property has the potential to double in value around every 10 years. Given this, to be debt-free you need to hold the investment properties through one full growth cycle of 10 years, then sell them.

This means your two investment properties will double in value from $1.2m to $2.4m during the cycle. If you sell them at this point for $2.4m, you incur capital gains tax (CGT) on half the profit (as you held the properties for more than a year). This will cost you around $300k at the top tax bracket.

The remaining amount is $2.1m. You can now fully repay the $1.8m debt on the investment properties and your home, leaving you with $300,000 extra and a fully paid-off home. I'm sure you'll think of something to do with the extra money!"

Need expert help? Contact a mortgage broker

What are the risks of interest-only loans?

It's a good idea to consider the risk or negatives when making any financial decision. Then you're able to balance out the pros with the cons to make the right decision for you. Interest-only loans have a few possible drawbacks:

  • Interest-only loans have higher interest rates. While your repayments are smaller at first, lenders charge higher rates for interest-only loans. The lowest rates on the market are always principal-and-interest loans. When your loan reverts to a principal-and-interest loan, make sure you're rate is lower too.
  • With interest-only loans, you won't reduce your debt during the interest-only period. At the end of the interest-only period, you'll still owe the same amount you borrowed. For instance, if you borrow $500,000 on an interest-only loan, two years later, you'll still owe $500,000 on that loan.
  • Your repayments rise significantly once your loan reverts to a principal and interest loan. This is because you now need to pay off the principal in the remaining loan term, after a period of making no headway with the overall balance. As in our previous example, if you had an interest-only loan worth $500,000 for 2 years, you would then repay the $500,000 principal (plus interest) over the remaining 28 years of the 30-year loan term. One way to get around this is to refinance the loan to a fresh 30-year term, although this means it will take you longer to own your home outright.
  • Interest-only home loans can also be risky if your property fails to increase in value. This means when the interest-only period ends, you won't have as much equity in your home as you'd have if you were chipping away at the principal with a standard principal and interest loan.

None of this means interest-only loans are inherently bad or risky. You just need to be aware of the potential downsides and make sure your investment strategy suits your loan type. Getting expert help from a mortgage broker is a good idea if you're confused about interest-only investment loans.

How do I compare interest-only investment loans?

When comparing interest-only mortgages for investment, you need to consider these factors:

  • Interest rate. A lower rate means lower repayments. It's one of the fastest ways to compare mortgages. If 2 loans are equal in all other respects (fees, features, eligibility criteria), the one with the lowest rate is better for you.
  • Offset account. Having an offset account lets you use additional savings to reduce your interest payments even further. Investors can really take advantage of offset accounts by building up savings and reducing their loan while still maximising their tax-deductible expenses.
  • Flexibility. A loan with low fees (especially discharge and switching fees) makes it easier to refinance your mortgage when the interest-only period ends. And why pay more in fees when you can avoid it?
  • Structure. Structure is the most important factor when choosing your investment loan. Do not cross-secure your investment loans with the home loan on your own personal home.

Use a repayment calculator

Use a loan repayment calculator =to find out what your repayments will be if you choose an interest-only home loan. Then run the same calculations for principal and interest repayments so you can see what your repayments will be once the interest-only period ends. You’ll need to pay attention to both repayment figures and determine if you’ll be able to service the new repayments once your interest-only period ends.

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