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Buying Property · Koste Knowledge Base

How to Maximise Your Borrowing Capacity for Investment

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Borrowing capacity refers to the amount a lender is willing to loan you for property investment. It's influenced by income, expenses, credit history, and existing debts. To maximise it, reduce personal debt, improve your credit score, and provide comprehensive financial documentation. Consult with a financial advisor for tailored strategies.

Your borrowing capacity is a crucial determinant of how much you can invest in property. It represents the maximum amount a lender is willing to loan you, considering various factors such as your income, existing financial commitments, and credit history. Lenders assess these elements to ensure you can comfortably service the loan repayments.

Under Australian lending guidelines, your borrowing capacity is influenced by several factors:

  • Income: Your salary, rental income, and any other regular earnings.
  • Expenses: Living costs, existing loan repayments, and other financial commitments.
  • Credit history: Your credit score and history of managing debts.
  • Loan term and interest rates: The length of the loan and the rate offered can affect the maximum loan amount.
A common misconception is that a high income alone guarantees a high borrowing capacity. In reality, lenders consider a holistic view of your financial situation, including your existing debts and living expenses.

To see how this plays out, consider a 2009-built 2-bedroom apartment in Fortitude Valley, Brisbane, valued at $700,000. If you earn $120,000 annually and have monthly expenses of $3,000, your borrowing capacity might allow you to finance up to $560,000, assuming a 20% deposit. With a 5% interest rate over 30 years, your monthly repayments would be approximately $3,000.

In our experience reviewing thousands of properties across Australia, we've seen that investors often overlook the impact of personal debts on borrowing capacity. Many fail to optimise their credit score before applying for loans, which can significantly affect the interest rates offered. Additionally, investors sometimes underestimate the value of demonstrating consistent savings habits, which can positively influence a lender's assessment.

The answer can differ depending on your situation. For instance, if you're purchasing a property post-9 May 2017, certain depreciation benefits may not apply, affecting your overall financial strategy. Similarly, if the property is held in a Self-Managed Super Fund (SMSF), borrowing rules differ significantly. Joint ownership can also alter the borrowing capacity calculations, as lenders will consider the combined financial profiles of all owners.

Given the complexity of borrowing capacity calculations, it's wise to seek professional advice. A Chartered Quantity Surveyor and a financial advisor can work together to provide a comprehensive view of your financial position and potential strategies. They can offer insights tailored to your situation, ensuring you maximise your borrowing potential while aligning with your investment goals.

Here's what you can do next:

  • Review your credit history: Obtain a copy of your credit report and address any discrepancies.
  • Reduce personal debt: Pay down credit cards and personal loans to improve your financial standing.
  • Organise financial documentation: Prepare detailed records of your income, expenses, and assets.
  • Consult with a financial advisor: Get tailored advice on improving your borrowing capacity.
  • Consider loan pre-approval: Engage with lenders for pre-approval to understand your borrowing limits.
  • Explore different lenders: Compare offerings to find the best terms and conditions for your situation.
  • Frequently Asked Questions

    How does my credit score affect borrowing capacity?

    Your credit score is a key indicator of your financial reliability. A higher score can enhance borrowing capacity by qualifying you for better interest rates and loan terms.

    Do joint applications increase borrowing capacity?

    Joint applications can increase capacity by combining incomes but also consider combined debts and expenses. Lenders evaluate the total financial profile.

    How do investment properties affect borrowing capacity?

    Rental income from investment properties can boost capacity, but existing property loans are considered debts, potentially offsetting gains.

    What state-specific factors influence borrowing capacity?

    In states like NSW, stamp duty concessions for certain buyers can affect overall affordability, indirectly influencing borrowing capacity.

    How do I report changes in borrowing capacity on my tax return?

    Generally, borrowing capacity changes don't directly affect tax returns, but consult your accountant for impacts on investment deductions and liabilities.

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    Written by Koste Team · Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai