A borrowing estimate can feel frustratingly out of step with what you earn. You may have a solid salary, a healthy deposit and a clear property goal, yet find the lender’s figure falls short. Understanding how to improve borrowing capacity starts with knowing that lenders assess more than income. They look at your ongoing commitments, household spending, credit history, loan structure and their own lending policies.
The aim is not simply to borrow the largest possible amount. It is to put forward an application that reflects your real financial position and supports repayments comfortably if interest rates or circumstances change. For Australian borrowers, a few well-timed changes can make a meaningful difference before applying or seeking pre-approval.
What determines your borrowing capacity?
Borrowing capacity, sometimes called serviceability, is the amount a lender believes you can reasonably repay. Each lender uses its own assessment model, so the outcome can vary even when your income and expenses remain the same.
Your assessable income is a starting point. This may include salary and wages, regular commissions, rental income, business income or certain government payments, depending on the lender. Lenders then subtract your declared living expenses and existing financial commitments. They also test the proposed loan repayment at an interest rate higher than the actual rate offered. This serviceability buffer is designed to allow for future rate rises.
A strong deposit helps with your loan-to-value ratio and may reduce lenders mortgage insurance, but it does not automatically increase the amount you can service. Similarly, a high income can be offset by large personal debts, high credit card limits or spending that leaves little room for a mortgage repayment.
How to improve borrowing capacity before you apply
The most effective approach is to review your position early, ideally several months before you plan to buy, refinance or seek business funding. Some changes take time to appear in your bank statements, credit report or financial records.
Reduce repayments on personal debt
Car finance, personal loans, buy now pay later arrangements and credit cards can all reduce borrowing capacity. Lenders assess the repayment obligation, not just the outstanding balance. A $15,000 car loan with a sizeable monthly repayment can have a greater serviceability impact than borrowers expect.
Paying down or consolidating debt may help, but only where the new arrangement genuinely lowers your commitments and suits your wider financial plan. Do not close a loan or credit facility without checking whether there are early repayment fees, and avoid taking on new debt shortly before lodging an application.
Credit card limits deserve particular attention. Even if you pay the card off every month, lenders commonly assess a monthly commitment based on the full approved limit. Reducing a $15,000 limit to an amount that matches your genuine needs can improve the figures. Closing unused cards can also simplify the application, provided it does not leave you without practical access to funds for normal expenses.
Review living expenses honestly
Lenders will compare the expenses you declare with household expenditure benchmarks and may use the higher figure. Bank statements are often reviewed, so an unrealistically low expense estimate is unlikely to help and can lead to further questions.
Instead, examine where money is actually going. Subscriptions, frequent dining out, private school fees, childcare, insurance, medical costs and regular transfers to family all matter. The objective is not to present a perfect budget. It is to identify spending you can responsibly reduce or remove without creating financial pressure elsewhere.
A few months of consistent, sensible spending can give both you and the lender a clearer picture. Keep records of expenses that are temporary or about to end, such as childcare costs ending when a child starts school. Some lenders may consider evidence of a confirmed change, although policies differ.
Strengthen the income lenders can verify
Stable, well-documented income is generally easier for lenders to assess. If you receive overtime, bonuses, commissions or allowances, check how consistently they have been earned and how a lender is likely to treat them. Some may use only a portion of variable income or require a longer history.
For salaried employees, avoid changing roles immediately before applying unless the new position materially improves your circumstances and you can provide a signed contract or recent payslips. A move from casual work to permanent employment may be positive, but lender requirements vary around probation periods.
Self-employed borrowers should focus on clean, current financial documentation. This often includes tax returns, notices of assessment, business financials and business activity statements. Keeping personal and business spending clearly separated can make income easier to understand. Legitimate tax deductions are valuable, yet they can reduce the taxable income a lender relies on, so borrowing plans should be considered alongside tax planning rather than after it.
Build a clear savings pattern
A deposit is only one part of the picture. Regular savings can demonstrate your ability to manage a future mortgage repayment and may support a stronger application. If your deposit comes from a gift, sale proceeds or equity, lenders may still want to see that your day-to-day finances are under control.
Set aside a realistic amount each pay cycle in a separate savings account. This is useful preparation for the actual repayment commitment and can reveal whether the target loan amount is comfortable before settlement. It is better to adjust your price range early than to rely on a repayment figure that only works under ideal conditions.
Choose the right loan structure and lender policy
There is no universal borrowing-capacity calculation. One lender may accept a greater proportion of rental income, while another may assess overtime, bonuses, family benefits or self-employed income more favourably. Policies also differ on existing investment properties, interest-only loans, guarantor arrangements and business debts.
This is where loan structure matters. Extending a loan term can reduce assessed repayments and may improve serviceability, but it can also increase the total interest paid over the life of the loan. Choosing interest-only repayments may assist some investors in the short term, although eligibility is stricter and principal repayment requirements must eventually be met. A lower loan amount, a larger deposit or a different property type may be the more sustainable answer.
If you are buying with a partner, applying jointly can increase borrowing capacity because two incomes are considered. It can also bring both sets of debts, expenses and credit histories into the assessment. Joint borrowing should be based on shared financial goals and legal ownership advice, not simply on maximising a number.
Protect your credit profile while preparing
Your credit report is not the only factor in a lending decision, but it can influence how confidently a lender views your application. Check it for errors, outdated defaults or accounts that should be closed. Correcting inaccurate information can take time, so leave room before applying.
Try not to make repeated formal credit applications while comparing options. Multiple enquiries in a short period can raise questions, especially if they relate to personal loans, credit cards or other unsecured finance. Obtaining guidance before submitting applications can help you target lenders and products that suit your circumstances.
Pay every bill and repayment on time. A late payment pattern can be more difficult to explain than a single isolated issue. If you have experienced hardship, a relationship breakdown, illness or a business disruption, gather documents that explain the circumstance and show how your position has stabilised.
Avoid changes that look good only on paper
Borrowing more is not always better. Draining all savings to clear a small debt might improve a calculation but leave you with no emergency buffer, stamp duty funds or capacity for repairs. Cancelling essential insurance, underestimating household costs or temporarily moving money around can create problems during assessment and after settlement.
The better strategy is to make changes that will still make sense once the loan is in place. Keep an emergency reserve, account for rate rises, and consider future plans such as parental leave, school costs, a new vehicle or business investment. Lending decisions should support the life you are building, not just the property contract you are trying to secure.
A tailored review can identify which change is likely to have the strongest effect in your case. For some borrowers, reducing a credit limit is enough. For others, the answer may be waiting for another year of business financials, restructuring debt, adjusting the purchase budget or approaching a lender with a more suitable policy.
Before you set your next borrowing target, put your actual bank statements, income documents and current debts on the table. A clear assessment of the numbers now gives you more choices later, and helps turn a lender’s borrowing figure into a decision you can live with confidently.