Finder makes money from featured partners, but editorial opinions are our own.

40-year home loans

40-year home loans are very rare in Australia. Borrowing money over 40 years will lower your monthly repayments but you will pay more interest in the long run.

The vast majority of Australian borrowers get home loans with 30-year loan terms. This is the maximum amount most lenders allow. But it is possible to get a loan with a longer term of 40 years. A 40-year home loan is otherwise identical to other home loans: You borrow money and pay it back with interest charged on top.

The difference is the time involved and the amount of interest you pay. The main benefit for borrowers who take out 40-year loans is that they pay reduced ongoing repayments, as the debt is structured over a longer time period. The main drawback is that because they have their loan for longer, they end up paying a higher amount of interest in total.

It's a really good idea to talk to a mortgage broker before committing to a 40-year home loan.

Why are 40-year home loans more expensive?

Because of the extended loan term on a 40-year mortgage you end up paying the loan off more slowly and interest has more time to accumulate. This is why it costs you more in the long run (and less each month).

Here's an example using our mortgage calculator. These numbers are based on 2 principal-and-interest home loans that are identical apart from the loan term:

30-year mortgage40-year mortgage
Loan amount$500,000$500,000
Interest rate2.5%2.5%
Monthly payment$1,975$1,650
Total interest paid$211,217$291,468
Total amount paid$711,217$791,468
ResultYou save $80,251You pay $80,251 more

On a 40-year home loan term, you will pay $325 less a month. However, you'll pay a whopping $80,251 more in interest by the end.

Also, while the 30-year home loan is paid off after 30 years, you'll still pay the mortgage for another 10 years with the 40-year loan term. All in all, the 40-year home loans costs an additional $80,000 over the life of the loan. This is quite a hefty premium to pay in exchange for lower repayments month to month.

Pros and cons of 40-year home loan terms

Like anything involving risk, there are significant pros and cons that you should become familiar with before deciding whether to borrow on a 40-year term:


  • Monthly repayments are lower.
  • You could potentially borrow more because the repayments are more affordable.
  • If the loan has a variable rate and allows for extra repayments, you can pay it off faster anyway.


  • You'll likely pay tens of thousands more in interest.
  • You will not build equity as quickly as you would in a mortgage with a shorter term.
  • You will stay in debt for a whole decade longer than most borrowers.

What are the types of 40-year mortgages available?

The main loan types that offer 40-year terms include:

  • Fixed rate home loans. With a fixed rate home loan, you won't fix the rate for 40 years. In Australia, fixed rate loans aren't usually offered for 40 years, but rather for terms of between 1 and 10 years.
  • Variable rate home loans. A variable interest rate means just that: the rate is flexible and varies over the life of your loan. Even if you fix your rate for a few years, with a 40-year term you will definitely spend most of the loan on a variable rate.
  • Low doc home loans. Low doc loans are popular with borrowers who are self-employed or who have their income tied up in investments, and require less documentation. As such, they may come with higher interest rates to offset the risk the lender may be taking on.

How to compare 40-year home loans

You should always take time to compare mortgage offerings from different providers. The key points to consider while comparing loans include:

  • Choose a loan type that fits your budget. If you want control over your repayments for the first few years of your loan, then a fixed rate option may work well for you. If you want to take advantage of favourable market conditions, you may opt for a variable rate. The important thing is to consider any ongoing fees that may eat into your budget.
  • Are there any additional fees? If you want to have the option of paying off the loan before the end of the 40-year term, check if there are any early repayment fees. Some loans have a monthly administration fee; check all possible fee amounts when comparing loans.
  • Does the loan fit your plans? In addition to fitting with your budget, ensure that the loan offers some flexibility when it comes to planning for the future. Nobody can truly plan for the future, and there is a possibility that you will be moving from the home that you are borrowing for. See if you can find a loan with lower discharge fees if you decide to leave during the fixed term, or with no early repayment fees if you refinance later on.
  • Is the rate competitive? These loans may come with higher rates than those of mortgages spanning 30 years or less.

Frequently asked questions about 40-year loan terms

More guides on Finder

Ask a Question

You are about to post a question on

  • Do not enter personal information (eg. surname, phone number, bank details) as your question will be made public
  • is a financial comparison and information service, not a bank or product provider
  • We cannot provide you with personal advice or recommendations
  • Your answer might already be waiting – check previous questions below to see if yours has already been asked

Finder only provides general advice and factual information, so consider your own circumstances, or seek advice before you decide to act on our content. By submitting a question, you're accepting our Terms Of Service and Finder Group Privacy & Cookies Policy.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Go to site