You have a good income. You have savings. You pay your bills on time.
So why is your borrowing capacity lower than you expected?
When preparing to buy a home or investment property, many Australians naturally focus on their salary and deposit. But lenders look at much more than how much money you earn.
Existing debts, credit limits, household expenses and even financial commitments that seem relatively minor can affect how much a lender is prepared to let you borrow.
For property investors, this can be particularly important. A difference of $50,000 or $100,000 in borrowing capacity could change the locations, property types and investment strategies available to you.
Here are seven things that may be reducing your borrowing capacity without you realising it.
Borrowing capacity, sometimes called borrowing power, is broadly the amount a lender may be prepared to lend you based on its assessment of your financial circumstances.
A lender may consider factors including:
Importantly, different lenders can calculate borrowing capacity differently.
One lender declining or limiting an application doesn't necessarily mean every lender will reach exactly the same result.
Understanding the factors affecting your borrowing power can therefore be useful before you start looking at properties.
This one catches many borrowers by surprise.
You might have a credit card with a $20,000 limit but only owe $500 on it.
Or perhaps the balance is completely paid off.
You may assume the card shouldn't affect your borrowing capacity because you aren't carrying significant debt.
But lenders can consider the available credit limit, not simply the amount you currently owe.
Why?
Because technically, you could use that available credit after your home loan is approved.
A high credit-card limit can therefore represent a potential future financial commitment.
Imagine you have:
Credit Card A: $15,000 limit
Credit Card B: $10,000 limit
That's $25,000 in available credit.
Even if both cards currently have zero balances, those limits may still be considered when assessing your financial commitments.
For someone preparing to apply for property finance, reviewing unnecessary credit limits can therefore be worthwhile.
This doesn't mean everyone should automatically close their credit cards. The right decision depends on your circumstances, particularly if the cards are needed for everyday cash-flow management or other purposes.
But it's important to understand that unused credit isn't necessarily invisible to a lender.
A car loan can feel completely separate from your property plans.
To a lender, however, it's another financial commitment that needs to be serviced from your income.
Suppose you're paying:
$850 per month for a car loan.
That's:
$10,200 per year
of your income already committed before the proposed mortgage is considered.
Personal loans can have a similar impact.
This may include finance used for:
The outstanding balance matters, but so can the required monthly repayment.
Two people earning the same salary could therefore have very different borrowing capacities if one has substantial personal debt and the other doesn't.
For someone planning to purchase property, taking on a new car loan shortly before applying for a mortgage could potentially affect their borrowing position.
Buy now, pay later services can make relatively small purchases feel insignificant.
But lenders aren't only interested in large debts.
They want to understand your overall financial commitments and spending behaviour.
Depending on the lender and circumstances, buy now, pay later arrangements may be identified through:
One small purchase may not transform your borrowing position.
But multiple ongoing commitments can contribute to the overall picture of your finances.
If you're preparing for a home-loan application, it can be useful to review how many short-term credit commitments you currently have and whether they're genuinely necessary.
Many people assume borrowing capacity is simply:
Income – existing loans = borrowing power.
It's much more complicated than that.
Lenders also need to consider the cost of running your household.
Depending on the assessment, this can include expenses such as:
The more of your income required to support your existing lifestyle, the less may be available to service additional debt.
This can become particularly important for higher-income households.
A high salary doesn't automatically produce high borrowing capacity if household expenditure is also very high.
Consider two households each earning $180,000 per year.
Household A has relatively modest ongoing expenses.
Household B has expensive car repayments, private-school fees, multiple subscriptions and significantly higher discretionary spending.
Even though their incomes are identical, their borrowing assessments may be very different.
Having children can also affect borrowing capacity because lenders consider the cost of supporting dependants.
This can include factors such as:
A couple earning $200,000 with no dependants may therefore receive a different borrowing assessment from a couple earning the same amount with three children.
Childcare can be particularly significant.
If you're paying hundreds of dollars each week in childcare costs, that represents a substantial ongoing household expense.
However, family circumstances can be nuanced.
For example, childcare expenses might be expected to change when a child starts school.
How a lender treats particular circumstances will depend on its policies and the evidence available.
The important point is that borrowing capacity isn't based on income in isolation – household circumstances matter too.
Owning property can help you build wealth and equity.
But existing property debt can also influence how much additional finance you can access.
This is especially important for investors trying to purchase property number two, three or four.
A lender may consider:
One common misconception is:
"My investment property pays for itself, so the loan shouldn't affect my borrowing capacity."
Lenders don't necessarily assess it that simply.
Rental income may be treated conservatively rather than counted dollar-for-dollar, and the existing mortgage still needs to be included in the overall serviceability assessment.
This is one reason an investor can have substantial equity but still struggle to borrow for another property.
Equity and borrowing capacity are not the same thing.
The structure and proposed term of a home loan can also influence borrowing capacity.
A longer loan term generally spreads repayments across more years, resulting in lower scheduled repayments than the same loan repaid over a shorter period.
For example, repayments on a loan over:
30 years
will generally be lower than repayments on the same amount over:
15 years
assuming the same interest rate and repayment structure.
Age can become relevant because it may influence the available loan term and the lender's assessment of how the debt will be repaid, particularly where the proposed term extends into retirement.
That doesn't mean older borrowers can't obtain property finance.
It means the lender may need to understand the borrower's circumstances and, where applicable, how the loan fits within their longer-term financial position.
Although it's not a traditional personal loan, an outstanding HELP debt can affect cash flow through compulsory repayments once income reaches applicable thresholds.
This can consequently influence a lender's assessment of borrowing capacity.
This surprises some borrowers because they may not think of their university debt as relevant to a mortgage application.
But from a serviceability perspective, lenders are interested in commitments that reduce the income available to meet mortgage repayments.
If you have a HELP debt, make sure it's included when assessing your likely borrowing position rather than discovering its impact after you've already started making offers.
Imagine two borrowers.
Both earn:
$150,000 per year.
Their salaries are identical.
Their borrowing capacity could still be substantially different.
This is why asking someone else:
"How much could you borrow on your salary?"
isn't particularly useful.
Your borrowing capacity is based on your broader financial position and the lender assessing it.
Having a large deposit doesn't automatically mean you can borrow a large amount.
Imagine you have:
$200,000 in savings.
That may provide a strong deposit.
But if your income only supports a relatively modest mortgage, the lender isn't necessarily going to approve a much larger loan simply because you have cash available.
The reverse can also occur.
Someone may have a strong income and borrowing capacity but insufficient savings or equity for the required deposit and purchasing costs.
Successful property finance generally requires both:
Enough funds to complete the purchase
and
Enough serviceability to support the proposed debt.
This distinction is particularly important for property investors.
Suppose your investment property is worth:
$800,000
and you owe:
$500,000.
You have:
$300,000 in total equity.
Using an illustrative 80% loan-to-value ratio:
$800,000 × 80% = $640,000
Potential usable equity:
$640,000 – $500,000 = $140,000
That doesn't automatically mean you can borrow another $140,000.
You still need to satisfy the lender's serviceability requirements.
You can therefore have:
Plenty of equity + limited borrowing capacity.
This is one of the most common barriers investors encounter when trying to expand a property portfolio.
Borrowing capacity isn't a single universal number.
Different lenders can have different approaches to:
As a result, one lender might assess a borrower very differently from another.
This doesn't mean the lender offering the highest borrowing capacity is automatically the best choice.
Interest rates, fees, loan features, structure and your longer-term strategy also matter.
For property investors, it's particularly important to consider how today's lender decision could affect future purchases.
Potentially, depending on your circumstances.
For example, refinancing or restructuring existing debts might alter:
But refinancing isn't automatically beneficial.
There can be costs involved, and extending debt over a longer period can increase the total amount of interest paid.
The decision should therefore be assessed as part of your broader financial strategy rather than solely as a way to increase borrowing power.
There isn't one trick that instantly increases borrowing capacity.
But depending on your circumstances, areas worth reviewing can include:
If you have large unused credit-card limits, determine whether you genuinely need them.
Reducing car loans or personal loans may improve monthly cash flow.
Consider whether unnecessary buy now, pay later commitments can be cleared.
Understanding where your money goes can help identify expenses that are no longer providing value.
A pay rise, additional work or increased business income may strengthen borrowing capacity, although lenders can have requirements around how different types of income are assessed.
Your current mortgage structure may be worth reviewing before another purchase.
A lender whose policies better suit your circumstances may assess your position differently.
None of these actions guarantees a higher approval amount, but understanding the factors involved can help you prepare more effectively.
There's an important difference between genuinely improving your financial position and temporarily changing spending behaviour to make an application look stronger.
Lenders can request information to understand your actual financial circumstances.
A better approach is to build sustainable financial habits well before you're ready to purchase.
That might mean:
The goal isn't simply to qualify for the largest possible mortgage.
It's to obtain a loan that you can realistically manage.
For property investors, maximising borrowing capacity today isn't necessarily the only objective.
Suppose Lender A allows you to borrow enough to purchase an $850,000 investment property.
You could potentially proceed.
But if doing so completely exhausts your borrowing capacity, what happens when you want to purchase again?
An investor intending to build a portfolio should consider:
Property 1 → Property 2 → Property 3
rather than assessing each loan completely independently.
Sometimes purchasing below your maximum budget can preserve greater financial flexibility.
The right approach depends on your individual circumstances and strategy.
Before applying for property finance, review:
| Area | What to Check |
|---|---|
| Income | Salary, bonuses, overtime and other income |
| Credit cards | Limits as well as balances |
| Personal loans | Outstanding balances and repayments |
| Car finance | Monthly repayment commitments |
| Buy now, pay later | Existing facilities and balances |
| Living expenses | Actual household spending |
| Dependants | Children and other financial dependants |
| Childcare | Ongoing childcare commitments |
| HELP debt | Outstanding student debt obligations |
| Existing mortgages | Balances and repayments |
| Rental income | Income from existing investments |
| Loan term | Proposed repayment period |
| Savings | Deposit and financial buffers |
| Equity | Potential usable equity in existing property |
Understanding these factors before looking for property can give you a much more realistic picture of your purchasing position.
Imagine spending weeks searching for properties around $800,000, only to discover that your realistic finance position supports a purchase closer to $650,000.
You've wasted time researching properties you couldn't realistically purchase.
The opposite can also happen.
Some buyers assume they can't afford to invest, only to discover after speaking with a finance professional that their borrowing position is stronger than expected.
Understanding finance first allows you to search within a realistic price range.
That can make the entire property-buying process far more efficient.
At DDP Finance, we help buyers understand the bigger picture behind their borrowing capacity.
Rather than simply asking how much you earn, a borrowing assessment can consider the different factors that influence your ability to obtain finance.
Depending on your circumstances, this may include:
For property investors, we can also consider how the finance decision you make today may affect your ability to continue building your portfolio in the future.
Because getting finance isn't simply about finding a lender willing to say yes.
It's about finding a finance structure that makes sense for where you want to go next.
Factors can include existing debts, credit-card limits, living expenses, dependants, personal loans, car finance, HELP debt and existing mortgages. Lender policies and assessment methods can also affect the result.
They can. Lenders may consider the available credit limit rather than only the current balance when assessing your financial commitments.
Potentially. Car-loan repayments represent an ongoing financial commitment and can reduce the income available to service a mortgage.
It can. Compulsory HELP repayments can reduce available income and therefore affect a lender's serviceability assessment.
Dependants can influence borrowing capacity because lenders need to consider household living costs and expenses such as childcare.
Yes. Existing mortgages form part of the lender's assessment, even when the property produces rental income.
Rental income can contribute to a borrowing assessment, but lenders may not necessarily count 100% of the rent and may also consider property expenses and existing debt.
Yes. Lending policies and serviceability models can differ, meaning the same borrower may receive different outcomes from different lenders.
A larger deposit can reduce the amount you need to borrow, but it doesn't necessarily increase the maximum amount a lender believes you can service.
Not necessarily. Your maximum approval and a comfortable level of debt aren't automatically the same thing. Your cash flow, financial buffers, future goals and risk tolerance should also be considered.
