Is a 40 Year Mortgage a Good Idea?

Buying a home is a big decision, and the type of mortgage you choose can have a big impact on your finances. In recent years, there has been an increase in the popularity of 40 year mortgages in Australia. These loans offer lower monthly repayments than traditional 30 year mortgages, but they also mean that you’ll be paying interest for longer.

So, is a 40 year mortgage a good idea? In this article, we’ll discuss the pros and cons of this type of loan, and help you decide if it’s right for you.

Understanding the 40 Year Mortgage Australia

A 40-year mortgage is an alternative to the traditional mortgage terms, allowing borrowers to spread their repayments over a more extended period. With this extended term, borrowers can benefit from lower monthly mortgage payments, which may enhance affordability and provide more flexibility in managing their finances.

This can be particularly appealing for first-time homebuyers or individuals seeking to minimise their monthly mortgage obligations.

Get a free Australian mortgage assessment today.

Apply online to get a free recommendation with real rates and repayments.

What are the Different Types of 40 Year Mortgages Available in Australia?

In Australia, while the most common mortgage terms are typically 25 to 30 years, there are some lenders who may offer 40-year mortgage options to borrowers. These 40-year mortgages can come in different types, including:

Fixed-Rate 40-Year Mortgage

With a fixed-rate 40-year mortgage, the interest rate remains the same for the entire duration of the loan. This provides borrowers with the benefit of predictable monthly payments, as the interest rate and repayment amount do not fluctuate over the 40-year term.

Variable-Rate 40-Year Mortgage

A variable-rate 40-year mortgage, on the other hand, has an interest rate that can fluctuate over time.

The interest rate is typically linked to a benchmark rate, such as the Reserve Bank of Australia’s cash rate or the lender’s standard variable rate. This means that the monthly repayments can change, potentially increasing or decreasing depending on changes in the interest rate.

40-Year Interest-Only Mortgage

Some lenders may offer 40-year interest-only mortgages. With this type of mortgage, borrowers are only required to make interest payments for a specified period, typically around 5 to 10 years.

After the interest-only period, the mortgage converts to a principal and interest loan, and borrowers will need to start repaying both the principal and interest, usually over the remaining term.

What are the Eligibility Requirements for a 40 Year Mortgage?

The eligibility requirements for a 40-year mortgage in Australia can vary depending on the specific lender and their lending criteria. While requirements may differ, here are some common eligibility factors to consider:

  • Good Credit Score: Lenders typically assess your creditworthiness by evaluating your credit history and credit score. A good credit score demonstrates responsible financial behavior and a lower risk of default. Lenders may have minimum credit score requirements for applicants seeking a 40-year mortgage.
  • Stable Income: Lenders want assurance that you have a stable and sufficient income to make the monthly repayments over the extended 40-year term. They will typically assess your income through employment verification, payslips, tax returns, and other relevant documents.
  • Affordability: Lenders will assess your ability to afford the monthly mortgage repayments based on your income, expenses, and existing debt obligations. They may apply a debt-to-income ratio to determine whether you have sufficient income to comfortably meet the repayment obligations.
  • Loan-to-Value Ratio (LVR): Lenders may have specific requirements regarding the maximum loan amount compared to the appraised value of the property you intend to purchase. This is known as the loan-to-value ratio (LVR). Lenders generally prefer lower LVRs to mitigate risk.
  • Genuine Savings: Lenders may require borrowers to demonstrate genuine savings, indicating a history of saving and financial discipline. This can vary between lenders but typically involves showing a consistent savings pattern over a specific timeframe.
  • Documentation: You will be required to provide various documents during the application process, including identification documents, proof of income, bank statements, tax returns, and any other documentation requested by the lender.

Benefits and Drawbacks of a 40 Year Mortgage

Benefits Drawbacks
Lower monthly repayments: The biggest advantage of a 40 year mortgage is that it can result in lower monthly repayments. This can be a big benefit for people who are struggling to afford a traditional 30 year mortgage.
Pay more interest: The main disadvantage of a 40 year mortgage is that you'll pay more interest over the life of the loan. This is because you'll be paying interest for an extra 10 years.
More time to pay off your loan: A 40 year mortgage also gives you more time to pay off your loan. This can be helpful if you're not sure if you'll be able to afford a traditional 30 year mortgage in the long term.
Risk of interest rates rising: If interest rates rise, your monthly repayments will increase. This could make it difficult to afford your mortgage payments.
Flexibility: 40 year mortgages can be more flexible than traditional mortgages. For example, some lenders may allow you to make extra repayments without penalty.
Less equity: With a 40 year mortgage, you'll have less equity in your home for a longer period of time. This means that you'll be more exposed to financial risk if the value of your home falls.

Who Should Consider a 40 Year Mortgage?

A 40-year mortgage can be a viable option for individuals in certain financial situations and with specific objectives. Here are some scenarios where a 40-year mortgage may be worth considering:

  • Affordability Concerns: For individuals who find it challenging to afford the monthly payments associated with a traditional 30-year mortgage, a 40-year mortgage can offer a potential solution. By extending the repayment period, the monthly payments are reduced, making homeownership more affordable and manageable within their current budget.
  • More Time to Pay Off the Loan: Some borrowers may prefer a longer timeframe to pay off their loan. A 40-year mortgage provides an extended repayment period, allowing borrowers to spread the cost of homeownership over a longer duration. This can be particularly appealing for those who prioritise lower monthly payments and prefer a more gradual repayment approach.
  • Flexibility and Cash Flow Management: Opting for a 40-year mortgage can provide borrowers with greater flexibility in managing their finances. The lower monthly payments free up cash flow, allowing them to allocate funds towards other essential expenses, investments, or savings. This flexibility can be especially valuable for individuals who have other financial priorities or fluctuating income streams.

However, it is essential to carefully weigh the pros and cons before deciding if a 40-year mortgage is the right choice for you. Consider the following factors:

  • Total Interest Paid: Due to the extended repayment period, a 40-year mortgage may result in paying more interest over the life of the loan compared to a shorter-term mortgage. It’s important to evaluate the long-term cost implications and determine if the benefits of lower monthly payments outweigh the increased interest expenses.
  • Extended Debt Commitment: Committing to a 40-year mortgage means being in debt for a more extended period. Consider your long-term financial goals and plans for the future, such as retirement or other major life events. Assess whether having a mortgage for an extended duration aligns with your overall financial objectives.
  • Individual Financial Circumstances: Every individual’s financial situation is unique. Factors such as income stability, future earning potential, and personal financial goals should be taken into account when considering a 40-year mortgage. It is crucial to assess whether the extended repayment period is suitable for your specific circumstances and aligns with your financial objectives.

Tips for Australian Expats

If you’re an Australian expat, navigating financial matters and making the most of your situation can be crucial. Here are some tips to help you manage your finances effectively:

  • Understand Tax Obligations: Familiarise yourself with the tax laws and regulations in both Australia and your country of residence. Depending on your circumstances, you may be required to pay taxes in both jurisdictions.
  • Manage Currency Exchange: Stay informed about currency exchange rates and choose the most cost-effective methods for transferring money between countries. Consider using reputable currency exchange services or online platforms that offer competitive rates to minimise fees and maximise your funds.
  • Maintain Australian Bank Accounts: It can be beneficial to maintain your Australian bank accounts while abroad. This allows you to receive income, make payments for ongoing Australian obligations, and easily access funds when visiting Australia. Consider using online banking services for convenience and efficient management of your accounts.
  • Explore Investment Opportunities: Evaluate investment options that align with your financial goals. Consider diversifying your investment portfolio beyond your home country.
  • Consider Superannuation: If you have a superannuation account in Australia, ensure it is properly managed. Stay updated on any changes in legislation and evaluate whether maintaining or consolidating your superannuation is the best approach.
  • Maintain Insurance Coverage: Review your insurance coverage, including health insurance, life insurance, and property insurance. Ensure that you have adequate coverage that meets your needs in both Australia and your country of residence.

Consulting with professionals who specialise in serving Australian expats can provide valuable insights and guidance. Engage with tax advisors, financial planners, mortgage brokers, and other experts who have experience in working with expats. They can offer personalised advice based on your unique circumstances and help you make informed decisions.

Are You Eligible for a 40 Year Mortgage?

While a 40-year mortgage in Australia can be a suitable option for certain individuals, it is not the right choice for everyone. It’s crucial to thoroughly evaluate your individual circumstances, financial goals, and preferences before deciding on this type of loan.

At Odin Mortgage, our team of expat mortgage brokers is dedicated to assisting you in finding the most suitable mortgage solution. Contact our experienced brokers today to discuss your requirements and receive personalised guidance tailored to your expat mortgage needs.

Get a free Australian mortgage assessment today.

Apply online to get a free recommendation with real rates and repayments.

Frequently asked questions

Lenders typically consider credit scores when assessing mortgage applications. While a low credit score may affect your eligibility, some lenders may still offer 40-year mortgages to borrowers with less-than-perfect credit.

It’s advisable to consult with lenders or mortgage brokers who can provide guidance based on your specific credit situation.

Lenders typically assess the borrower’s income and financial stability to ensure they can afford the monthly repayments. The specific income requirements can vary between lenders.

It’s important to have a stable income and provide the necessary documentation, such as payslips and tax returns, to demonstrate your ability to make the repayments over the extended term.

The eligibility of property types may vary between lenders. Some lenders may have restrictions on certain property types, such as off-the-plan properties or specific locations.

It’s important to check with lenders or mortgage brokers regarding their property eligibility criteria when considering a 40-year mortgage.



The terms regarding extra repayments or early repayment options can differ among lenders and specific mortgage products. Some lenders may allow borrowers to make extra repayments or pay off the mortgage early without penalties, while others may have restrictions or charges associated with such actions.

It’s essential to review the terms and conditions of the specific mortgage product or discuss it with the lender to understand the available options.



The application process duration can vary between lenders. Factors such as documentation requirements, property valuation, and individual circumstances can impact the timeline. In general, the application process can take several weeks, from gathering documentation to final approval.

Consulting with lenders or mortgage brokers can provide a better estimate of the timeline based on their specific processes and requirements.

Odin Mortgage Logo
Featured In
Geo Expat Logo
Asia xpat Logo Logo
Expat Living Logo
Easy Expat Logo

10 Best Tips for Australian Expats to Maximise Borrowing Power & Approval Success