The Australian Bureau of Statistics puts full-time adult average ordinary time earnings at $2,083.70 a week as at May 2026, released in August 2026. Annualised, that is roughly $108,000 a year (our arithmetic, not an official ABS figure, but a fair translation). It is a natural benchmark to hold a car purchase against. If you earn close to the national average, how large a car loan will a lender actually approve? The honest answer is that your salary sets the ceiling, not the figure itself. Two people on identical pay can be approved for very different amounts, because a lender lends against what is left after your commitments, not against your headline income. That gap between what you earn and what a lender will advance is your real car loan borrowing power, and it is worth understanding before you start shopping.
Salary is where the assessment starts, not where it ends
Every car finance application begins with income, but not all income is treated equally. Base salary is generally counted in full. Overtime, bonuses, commissions and allowances are often counted only in part, or averaged across one or two years, because a lender wants evidence they recur rather than that they happened once. Casual and self-employed income is assessed on a track record, which usually means recent payslips or tax returns rather than a single strong month. So the starting point is not the $108,000 headline. It is your assessable income, the portion a lender is confident will still be arriving next year. We cover how different income types are weighted in our guide to the average Australian salary and the number lenders use.
The number that really matters is your monthly surplus
Once income is set, a lender subtracts the cost of your life. Rent or mortgage repayments, other loan repayments, credit card limits, buy now pay later commitments and everyday living expenses all come off the top. For living costs, lenders use the higher of your declared expenses or a benchmark figure scaled to your household, so understating your spending rarely helps. What remains is your monthly surplus, and that surplus, not your salary, is what a car repayment has to fit inside. This is why an average income with few commitments can support a healthy loan, while the same income carrying a mortgage, a personal loan and a credit card may support very little. Our calculators let you estimate a repayment before any lender runs the numbers.
The average is not the middle
It is worth knowing that the average salary overstates what most people earn. The same ABS program puts median employee earnings at $1,425 a week in the main job as at August 2025, well below the full-time average, because a median counts part-time workers and is not dragged upward by high earners. If your pay sits closer to the median than the average, your borrowing envelope is smaller than the headline number implies, which makes the surplus-first approach more important, not less.
Why the assessment rate makes your income look smaller
Lenders do not test your budget at the rate you will actually pay. They add a buffer, so that a rise in rates or a dip in income does not push you into arrears. For home loans, the Australian Prudential Regulation Authority requires banks to assess borrowers at least 3 percentage points above the loan rate, a setting it confirmed again in May 2026. Car and personal lenders are not bound by that exact figure, but most apply their own assessment margin in the same spirit. The practical effect is that your surplus is measured against a repayment calculated at a higher rate than your contract, so the amount you can borrow is smaller than a plain repayment calculator might first suggest.
A realistic sense of scale
There is no single figure a lender attaches to an average salary, and any promise of one would be misleading. What can be said is directional. A borrower on around $108,000 with modest living costs and no large existing debts will usually have enough monthly surplus to service a mid five-figure secured car loan over a typical three to five year term. Add a mortgage and a couple of other repayments, and that capacity can fall by half or more. Shorten the term, and the monthly repayment rises, which lowers the balance your surplus can carry. The average salary is a starting envelope. Your own commitments decide where inside it you land.
A mortgage is the biggest single variable
For borrowers who own a home, the mortgage repayment is usually the largest deduction in the assessment, and it has grown. Reserve Bank figures put the average variable rate on outstanding owner-occupier home loans at about 6.2 per cent in 2026, after three increases took the cash rate to 4.35 per cent, where it was held on 12 August. A repayment that has risen by a few hundred dollars a month directly reduces the surplus a car lender can count. If you hold a mortgage, the rate you carry on it quietly sets much of your car borrowing power. You can compare current car finance costs on our car loan rates guide to see what a new repayment would add.
Deposit, term and existing debt are the levers you control
Three things move the answer in your favour. A deposit lowers the amount financed, so the repayment your surplus must cover is smaller. A longer term reduces the monthly repayment, though it raises the total interest paid, so it is a trade-off rather than a free gain. And clearing or consolidating expensive existing debt frees up surplus directly. If you carry a high-rate personal loan or a balance you are slowly paying down, refinancing it can lift the borrowing power available for the car, sometimes more than a pay rise would. Lenders also watch your overall debt-to-income position, so reducing total commitments helps on more than one front.
What to do before you apply
Start from your surplus, not your salary. Add up your genuine monthly income after the parts a lender will discount, subtract your real living costs and every existing repayment, and see what is left. Tidy up small commitments you do not need, since an unused credit card limit still counts against you. Then compare offers rather than accepting the first one, because the rate and fees change the repayment and therefore the balance you can carry. Our lenders directory and car loan rates guide are built for that comparison, and the calculators turn your surplus into an estimated repayment in a minute. None of this is a promise of approval, which always rests with the lender, but it puts you in front of the process instead of behind it.
