News - Here’s everything you need to know about interest-only home loans

Here’s everything you need to know about interest-only home loans

Interest-only home loans can be an effective strategy for both investors and homeowners. But what are the benefits and pitfalls of these loans, and how can you find the right option for you?


What is an interest-only home loan?

An interest only home loan is when borrowers only have to pay the interest on the loan (as well as any fees) for a fixed period of time (usually 5-10 years). If you only pay the minimum, then the amount you owe (the principal) will not change.

During this period, the repayments are a lot lower compared to a principal-and-interest home loan, where each repayment is made up of an interest and a principal component. Once the interest-only period ends, the home loan will revert to a principal-and-interest home loan over the remaining term.


Interest-only pros

  • Smaller repayments: The minimum you are required to pay is lower during the interest-only period. This can be beneficial if you are:
    • Currently on a tight budget: Lower repayments will take the pressure off in the short term, but you know you will be in a better financial position down the track. For instance, you are back to one income after the birth of a child, with your partner returning to work in two years’ time.
    • Wanting to build your savings quickly: This may be to purchase another property, for renovations, or make lifestyle purchases like a holiday, caravan or boat.
    • Investing for the first time: If you are keen to purchase your first investment property, but don’t want to commit to higher repayments until you have the extra expenditure required under control.
    • Looking to invest elsewhere: Some people choose to put their extra cash towards other investments to help build their wealth, like purchasing shares and managed funds. It also allows more diversification of assets outside the family home.
    • Wanting to build an emergency fund: To get into the property market, many home buyers use up all their savings to pay for the deposit and expenses involved like stamp duty. This leaves nothing spare for the unexpected, like losing your job, illness or major expenses. Interest-only repayments initially can allow you to build your savings back up more quickly.
  • Using it as a tax deduction: Investors often have an interest-only home loans which means that the full out of pocket expenditure will be a tax deduction. This is because only the interest amount is deductible, as it is the cost of funds used to purchase the property. Any principal paid builds the equity, which is capital and not an expense.


    Many financial advisers will often say that if you have spare cash, paying down personal, non-tax-deductible debt should be a priority. By paying interest-only on the investment loan, you can put extra money towards your non-tax-deductible debts. Extra payments can then be put towards paying off the loan on your own home, credit card and personal loans.

  • Get your foot in the door sooner: As mentioned above, interest-only home loans may give you an opportunity to purchase a property without being initially overwhelmed with the full principal-and-interest repayments. If the property needs improvements the extra amount could go towards it.

    An interest-only loan could be an option if you want to ease into getting used to repayments on a home loan. It is advisable to increase your repayments to the principal-and-interest amount as soon as possible so that once it reverts to principal-and-interest, you are already used to paying more, and have a buffer built up for emergencies.

  • Keep options open: A principal-and-interest loan is almost like a forced savings plan. The principal amount you pay is locked away and can’t be accessed. As this builds up, you are growing your equity but can’t access it unless you increase your loan or sell the property.


Some people like the idea that they can have ready access to anything that they pay above the minimum interest amount. But this strategy only works if you are disciplined with your money. If you just fritter your cash away, the aim to have your house fully paid off by the time you retire won’t happen.


Interest-only cons

  • Without planning, you may face financial stress: If you have stretched yourself financially and have taken out a loan that is close to the maximum you can borrow, having interest-only repayments at the start may make things a lot more difficult when they revert to principal-and-interest.

    At the end of the interest-only term, the full principal-and-interest amount is spread over the remaining term. This means that they will be higher than what you would have paid if you had principal-and-interest from the start.



    To illustrate, on a $400,000 loan over 25 years at 2.54%:

    ●  Principal-and-interest repayments $1,803 per month.

    ●  Interest-only repayments would be $847 per month, which is significantly less.

    If the loan was interest only for five years, then the principal and interest repayments to pay it off over the remaining 20 years would be:

    ●  Principal-and-interest repayments $2,127 per month.

    This is a significant jump of $1,280 per month which could create havoc with your budget. It is also $324 higher than principal-and-interest repayments from day one.

    If you have financially stretched yourself to purchase the home of your dreams, you may also find that if interest rates fluctuate, your repayments could end up being significantly higher than the example above.

  • May pay more in interest: The longer you have your home loan and the longer it takes to repay the principal owing, the more interest you will pay. By having an interest-only period during your loan term, even if you revert to principal-and-interest repayments after, you will end up paying thousands of extra dollars in interest.
  • You don't build equity: By only paying interest for the first 5-10 years, you will not have any equity built up in your home. If you want to sell before the interest-only period ends, you will still owe the full value of the mortgage. Also, if you decide to buy another property, you will not have the advantage of using equity saved in your current home to go towards that purchase.
  • Shortfall if you sell: If you are not paying off the principal, then you are really relying on an increase in the value of the property to build your equity. If you have borrowed a high proportion of the purchase price, as can be the case for investment properties, then you could be looking at a shortfall when selling the property sold if the value hasn’t increased. This would be the case if the sales proceeds were not enough to payout the loan on the property.
  • Higher interest rate: With changes to investor lending, some lenders have a higher interest rate for interest-only loans, even if it is for your own home. If this is the case, you need to weigh up the benefit of going interest-only or shop around for a cheaper interest-only interest rate.


  • Will I be able to afford the larger principal-and-interest repayments down the track?
  • Will the overall costs outweigh the benefits of the initial lower repayments?
  • What will your personal and financial situation be like in 5-10 years?

Consider a split loan

Some lenders have a split home loan option where borrowers can divide the amount owing into multiple portions. The benefits of both interest-only and principal-and-interest portions include:

  • Lower repayments during the first 5-10 years of the home loan
  • The amount owing will still be reduced
  • You will still build equity on your property, which you could use down the track if you want to refinance or purchase another property.

Offset accounts may come in handy

An offset account allows you to save interest on your loan without having to pay the funds into the loan itself. This can be very handy from a tax perspective, as it allows you to reduce the interest charged but doesn’t jeopardise the tax deductibility of an investment property loan.

For example, if you didn’t have any personal debt to pay down, you can still put your savings into the offset account to get the benefit of reduced interest on an investment property loan. If these same funds were paid into the loan and redrawn, it would reduce the amount of the loan that was tax deductible.

This can also be handy for your own home that you intend to turn into an investment property. By having interest-only repayments and putting your spare funds into an offset account, you keep the amount you owe at its maximum but still reduce the interest you are paying. When you turn it into an investment property down the track, the full loan will be tax deductible. If you are considering this strategy, then always discuss your options with a licenced adviser to ensure it is the best for your individual circumstances.


When the interest-only period ends

If you are coming to the end of the interest only period, you will need to think about your next steps. Depending on the investment strategy, investors in particular can be reticent to change to principal-and-interest repayments. The options available include:

  • Extend the interest-only period: Some lenders may allow you to extend the interest-only period. However, the lender may have to complete another credit assessment
  • Refinance to another lender: Take out a new loan with new interest-only period.
  • Allow it to revert to principal-and-interest repayments. Start working on paying off your loan over the remaining term.


    If you do want to extend the interest-only period, you should start to organise your finances around three months ahead of time. This will give you time to consider your options and do what is required to extend or refinance your loan.

  • Borrower's story:

    Brooke is a first home buyer who took out a $400,000 home loan over 25 years at 2.54%. She opted for the maximum interest-only period that the lender offered, which was 10 years. After five years, she planned to rent the property out and move back in with her parents to fast track saving for a deposit on a unit closer to the city.

    During the five years she made the principal and interest repayments of $1,803, but only paid the interest-only amount on the loan of $847 and the remainder $956 in the offset account. By the end of the 5 years she had amassed more than $57,0,00 and was well on her way to saving a deposit for a unit.


Tips to benefit

  • Have a plan. As illustrated above, there are lots of reasons why you would choose an interest-only home loan. But you need to have a clear idea of what you want to achieve. Without discipline, you could end up not making any inroads into what you owe, and pay a lot more in interest along the way.
  • Shop around. Just like any type of home loan, the more research you can do, the better. Compare interest-only interest rates across a number of lenders to ensure that you are getting a good deal.
  • Work out the features you need. Decide what features are important to you and compare loans with these features. Compare interest-only terms that are offered, whether they allow you to pay extra and redraw for free, whether you can split the loan, whether you can time your repayments so that they come out when you are paid or whether it has an offset account.
  • Pay extra into an offset account. Any money that is put into an offset account will reduce the amount of interest you have to pay on the loan. It is also a great way to get used to higher repayments when your home loan reverts to principal-and-interest.
  • Be prepared. At the end of the interest-only term, know exactly what you want to do in advance so that you are not thrown into financial turmoil. has a range of interest only home loans. To find out if an interest-only loan would be suitable for you, give our Lending Specialists a call on 1800 111 001 or leave your details here to contact you.

The opinions expressed in this article are the opinions of the author(s) and not necessarily those of The above is general commentary only and is not advice tailored to any individual's financial situation. We recommend seeking advice from a finance professional before implementing changes relating to your finances.

Back to top

Find out more is an award-winning provider of flexible and competitive home loans for all walks of life.
Click the button below to find out how we can help you.
panel clost button

Customer login

Get access to your accounts online.

Continue application

Login and complete your application.

Scheduled system maintenance
Due to planned server maintenance, our “Online Application” form will not be available on Sunday 27th February between 2:00am and 6:00am AEDT.

We apologise for any inconvenience caused.
Cookies help us improve your website experience.
By using our website, you agree to our use of cookies.