Technically speaking, if more than 30 percent of your pre-tax income goes towards paying your mortgage, you meet the common definition for being ‘mortgage-stressed’ – and, unfortunately, it’s more common than you think. We see it often with young successful couples who tend to commit beyond their future means.

What do we mean? Life changes, the position you are in now may not always be sustainable, so, be smart and get what you want without the mortgage stress that will ultimately take most of the joy out of owning your own home. If you seek the advice of a mortgage specialist, you can go over all the options and make an educated decision that will support your future, not just your now.

When thirty-something professionals Harry and Sally were house hunting for their first home they were on high incomes and had saved a healthy deposit. Even so, they cautiously did their homework, entering their information into several bank online calculators to determine their borrowing capacity.

They entered:

Borrower Couple
Dependents 1
Reason Residence
Pre-tax salary $190,000 annually
Living expenses $4,000 monthly
Current loan repayments $0.00
Personal loan repayments $600 monthly
Credit card limits $15,000

How much?

The highest amount suggested by one of these calculators was around $976,000 with monthly repayments of $4,650 over 30 years. Based on their current combined income this would take up 29.3% of their pre-tax income.

It’s natural to want the best home affordable. “We’re on good money. We figured we could afford it,” Harry said during our first meeting.

“But it’s a lot of money to owe,” Sally added as she started to understand what other costs might be involved. “A larger house costs more to maintain and furnish; plus higher council rates.”

When inflation is low and wage growth is next-to-nothing, households with large mortgages could be in real strife when costs of living go up or interest rates rise – regardless of the Reserve Bank of Australia’s (RBA’s) management of the cash rate. Banks now increase the rates on home loans at their own discretion.

Online calculators generally use limited information to give applicants an idea of what might be available to them. Supporting a mortgage up to thirty years requires more detailed consideration than credit card limits and pre-tax earnings.

The banks’ calculations would take Harry and Sally perilously close to the 30 percent threshold. Increased living expenses, or small interest rate rises would tip them into the danger zone.

Together we looked at an independent mortgage calculator on the ASIC MoneySmart website at By working on the couple’s AFTER tax income of $140,536[1] and applying 25% of this to calculate monthly repayments of $3,000, MoneySmart’s calculator returned a more realistic estimate of $629,000[2].

Though disappointed, they pragmatically decided to continue growing their deposit and even looked at ways of increasing their saving potential.

Options for increasing a loan deposit

Harry’s friend is saving for a home deposit by being a ‘house-sitter’. Initially popular for grey nomads, house-sitting has become a growing trend for potential home-buyers to live rent-free in exchange for caring for pets and plants. While this sounds idyllic, the nomadic lifestyle doesn’t suit everyone, and Harry’s friend occasionally ends up on his mum’s couch between sitting engagements. With a small child, this was not an option for this couple.

Alternatively, they could rent their spare room to Sally’s niece studying at a nearby university. That appeared more workable, not to mention a free baby-sitter!

And managing risk

Finally, we talked about whether or not they have insurance in place and got them in touch with a Certified Financial Planner to ensure they have the right type and right level of insurance in place to support their decisions.

Unfortunately, too many people are in over their heads. If you’re experiencing mortgage-stress or you’re losing sleep worrying about an interest rate rise, speak with your licensed adviser about a strategy to relieve the pressure.

If you would like to talk with a mortgage specialist on our team, you can book a time that is convenient for you via our online booking system – Request a Call.

[1] $100,000 + $90,000pa = $190,000pa combined income after tax and Medicare levy.
[2] Calculated at 3.99% interest over 30 years, not including fees or charges.


The material and contents provided in this publication are informative in nature only.  It is not intended to be advice and you should not act specifically on the basis of this information alone.  If expert assistance is required, professional advice should be obtained.