The average Australian household is losing $400 every month to five specific spending habits, according to research from SavingsRoom. That’s nearly $5,000 a year that could be going into savings, super, or a house deposit. With inflation running at 7.8% in April 2026 and the average household debt sitting at $225,000 according to ASIC, those dollars matter more than ever.
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These aren’t one-off splurges. They’re recurring leaks — supermarket habits, energy plans nobody reviewed, subscriptions you forgot about, banking fees that quietly add up, and impulse buys that felt small at the time. The research shows the full $400 monthly impact can be visible within six to eight weeks once you address them. Here’s what you actually need to know.
What “lifestyle creep” actually costs you
One pattern runs through most of these mistakes, and it has a name: lifestyle creep. It’s what happens when your income goes up but your spending rises right alongside it, leaving you no better off. The research from Canstar notes that automating the move of extra money from your everyday account to savings after a pay rise is the simplest fix — but most people don’t do it.
What I tend to notice is that people treat each spending category in isolation — the grocery bill is just groceries, the energy bill is just energy — without seeing how they add up to a number that could fund a decent emergency buffer or a meaningful investment habit. The research from Topica shows that Australians underestimate their spending by 20–30% according to ASIC’s MoneySmart service. That gap between what you think you spend and what you actually spend is where the regret lives.
Where the money actually goes — and what it costs you
Let’s put numbers on each category so you can see where your own situation might line up. The figures below come from two separate research rounds — one tracking five monthly habits and another tracking eight annual mistakes — so the totals differ, but the categories overlap heavily.
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| Category | Monthly cost | Annual cost | What’s driving it |
|---|---|---|---|
| Supermarket spending | $120 | $1,440 | Only 31% compare prices; brand loyalty adds $35/month; no-list shopping adds $45/month |
| Energy costs | $85 | $1,020 | 68% haven’t switched providers in 3+ years; standing offers cost 20–25% more than market offers |
| Subscriptions | $65 | $780 | Households pay for 7.3 services but actively use 3.8; 41% of services are forgotten |
| Banking fees | $80 | $960 | 89% pay unnecessary fees; big four banks charge account keeping, ATM, and international fees |
| Impulse purchases | $50 | $600 | Australians make 4.7 impulse purchases weekly; retailers use end-of-aisle displays and flash sales |
A second research round from SavingsRoom adds more detail. Insurance loyalty tax costs $340 a year — insurers charge existing customers up to 40% more than new customers. Brand shopping on groceries costs $280 a year, with private labels offering identical quality at 30–50% lower prices according to Choice Magazine. Food waste adds another $320 annually, with households discarding 20% of purchased food. Car running costs — poor tyre pressure, delayed servicing, aggressive driving — add $284 a year.
That 68% figure matters because new customer energy deals offer $340 to $1,200 in annual savings, according to the Australian Energy Regulator. If you’re in the 68%, you’re almost certainly overpaying by at least $1,020 a year. Victorian families average $2,340 annually in 2026. A 30-minute comparison on the government’s Energy Made Easy site can change that.
Four mistakes that cost more than you realise
Sticking with the same energy provider out of habit
Loyalty doesn’t pay here. The research shows households on standing offers pay 20–25% more than market offers. A typical Sydney family on a default AGL or Origin plan overpays $240 a year. The fix takes 30 minutes: go to Energy Made Easy with your latest bill, enter your usage data, and compare all available plans. Focus on annual cost, not headline discounts. Solar households need solar-friendly plans with generous feed-in tariffs. Battery owners need time-of-use rates. Set a calendar reminder to do it again next year.
Paying banking fees when fee-free options exist
Eighty-nine per cent of Australians pay unnecessary banking fees, totalling $960 annually per household according to the research. The big four banks — CommBank, Westpac, ANZ, and NAB — charge account keeping fees ($4–15), ATM withdrawal fees ($2.50), international transaction fees (2–3%), overdraft fees ($15–35), and paper statement fees ($2–5). Online-only banks like ING, Macquarie, and UP Bank offer zero monthly fees. The switch takes about two hours: open the new account online, set up direct debits and payroll, keep $100 in the old account for one month to catch any stray payments, then close it. Use MoneySmart’s account comparison to see your options.
Letting subscriptions pile up unnoticed
The average household pays for 7.3 services monthly but actively uses only 3.8. That’s 41% of subscriptions being forgotten, costing $65 a month or $780 a year. Netflix, Spotify, Disney+, Stan, Amazon Prime, and Apple services are the usual suspects. The fix: download three months of bank statements, highlight every recurring charge under $50, list each service with its last usage date, and cancel anything unused in 30 days. For services you keep, check family plans — Spotify Family costs $18.99 versus $71.94 for six individual accounts. Use your phone’s Screen Time or Digital Wellbeing feature to audit actual usage. Free alternatives like 7Plus, SBS OnDemand, and ABC iview cover most needs.
Buying brand names at the supermarket
Only 31% of Australians compare prices between major supermarkets, according to the research. ALDI offers 25–40% savings on identical products. Choice Magazine’s 2026 survey found switching 20 common items to private labels saves $5.40 per weekly shop — $280 a year. Shopping without a list adds $45 a month. Buying name brands when generics are identical adds $35 a month. Ignoring weekly specials adds $40 a month. The system: spend 20 minutes checking the ALDI, Woolworths, and Coles catalogues online, create a store-by-store list, and shop accordingly. The research suggests this can yield up to $487 monthly savings on groceries for households that fully commit. Woolworths and Coles typically mark down fresh meat and bakery items between 7–9am and after 7pm, so timing matters.
How to fix each category — the practical steps
Supermarket strategy that actually works
Start with a 20-minute weekly system. Check the catalogues for ALDI, Woolworths, and Coles online. Build a list that sends you to different stores for different items — ALDI for pantry staples, Woolworths or Coles for weekly specials on meat and produce. Use the FlyBuys and Everyday Rewards apps for targeted discounts that appear based on your shopping history. Buy meat in bulk when it’s on special and freeze it. Compare unit prices — per 100g or per litre — rather than package prices, because package sizes vary between brands and the bigger box isn’t always cheaper. The research from Rocket Remit notes that trimming 20% from groceries saves nearly $2,829 a year for the average household spending $272 a week.
Energy comparison — the 30-minute fix
Go to Energy Made Easy with your latest bill. You’ll need your usage data — the tool pulls from your distributor if you give permission. Compare all available plans by annual cost, not by headline discount percentages. Look for plans with no exit fees and guaranteed discount periods rather than conditional discounts that expire. If you have solar panels, filter for solar-friendly plans with generous feed-in tariffs. If you have a battery, look for time-of-use rates that let you charge cheaply overnight and use stored power during peak periods. Set an annual review reminder — the research shows households that don’t review for three years are almost certainly overpaying.
Subscription audit — the 45-minute cleanout
Download three months of bank statements. Highlight every recurring charge under $50 — those are the ones people forget about. List each service and note the last time you used it. Cancel anything unused in 30 days. For services you keep, check whether a family plan costs less than individual accounts. Set renewal reminders on your calendar so you catch price increases before they hit. Use free alternatives where they exist — 7Plus, SBS OnDemand, and ABC iview cover most streaming needs without a monthly bill. The research shows this 45-minute audit saves $156 a year on average, but many households save significantly more.
Banking switch — the two-hour process
Open a fee-free online account with ING, Macquarie, or UP Bank. Set up direct debits for your regular bills and transfer your payroll to the new account. Keep $100 in your old account for one month to catch any payments you forgot to redirect. After a month, close the old account. The research shows this eliminates $180 a year in fees for the average household, but 89% of Australians never do it. Use MoneySmart’s transaction account comparison to check which fee-free account suits your needs before you start.
What’s changing — free mid-day electricity from July 2026
From July 2026, some Australian retailers are offering free mid-day electricity. This changes the calculation for households that can shift energy use to the middle of the day — running the dishwasher, doing laundry, or charging devices during those hours. If you’re on a time-of-use plan, this could cut your bill further. The Energy Made Easy tool will show which retailers offer this in your area once it launches. Worth checking when you do your annual energy review.
Frequently asked questions
How long does it actually take to see the savings? ▾
What if I’m on a fixed-rate energy plan with exit fees? ▾
Do I really need to switch banks, or can I just ask my current bank to waive fees? ▾
What about insurance — is it worth switching every year? ▾
I’m already using a budgeting app. Do I still need to do this? ▾
What’s the single most impactful change I can make this weekend? ▾
The real cost of doing nothing
The research from Canstar puts it bluntly: an extra 0.56% in super fees can reduce your retirement balance by $136,900. That’s the same principle at work here — small recurring leaks compound into large losses over time. The $400 a month you could recover isn’t just $4,800 this year. Invested at a modest return over 20 years, it’s closer to $150,000. The difference between someone who fixes these five categories and someone who doesn’t isn’t discipline or willpower. It’s having a system. A 20-minute weekly grocery plan, a 30-minute annual energy check, a 45-minute subscription audit, a two-hour bank switch, and a cooling-off rule for purchases over $25. That’s the weekend that changes the trajectory.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Easy Ways to Save Money in Australia.
Sources and Further Reading
Simple Budgeting Tips for Australians — A practical guide to building a budget that actually sticks, with templates and app recommendations.
Maximise Your Savings with Supermarket Clearance Sales — How to time your shopping around markdown windows at Woolworths, Coles, and ALDI for maximum savings.
SavingsRoom (2026). Savings habits costing Aussies $400 monthly. 🔗
SavingsRoom (2026). Eight costly mistakes Aussie families make — $1,800 yearly. 🔗
Rocket Remit (2026). How to save money in Australia. 🔗
Topica (2026). Money mistakes Australians make. 🔗
Canstar (2026). Eight common money mistakes. 🔗
