How to find out what mortgage you can afford in Australia?

To determine what mortgage you can afford in Australia, assess your financial situation by evaluating your income, expenses, savings, and future financial stability. Use tools like the mortgage calculator in this article, and consult with a mortgage broker to get a comprehensive understanding of your borrowing capacity. Getting pre-approved for a mortgage can also provide clarity on your budget and strengthen your position as a buyer.

Buying a home is one of the most significant financial decisions many Australians will make in their lifetime. Understanding how large a home loan you can afford is crucial to making a sound financial decision and ensuring long-term stability. This article provides a comprehensive guide on assessing your mortgage affordability in Australia by evaluating your financial situation, understanding mortgage basics, calculating affordability, and consulting with professionals.

Assessing Your Financial Situation

Before diving into the mortgage market, it's essential to have a clear understanding of your financial situation. This involves evaluating your income, expenses, savings, and investments.

Income Evaluation

Start by assessing your regular income sources, which typically include your salary, bonuses, and any rental income. Regular income provides a stable foundation for determining how much you can borrow. Additionally, consider any irregular income from freelance work, seasonal jobs, or side hustles. Although less predictable, this income can contribute to your overall financial picture.

Expenses Analysis

Understanding your expenses is critical in determining your mortgage affordability. Break down your monthly expenses, such as utility bills, groceries, insurance, and transportation costs. Don’t forget annual expenses, including taxes, insurance premiums, and holiday costs. Additionally, account for debts and liabilities like credit card payments, personal loans, and student loans. A clear picture of your expenses will help you understand how much you can allocate towards mortgage payments.

Savings and Investments

Evaluate your current savings, including your emergency fund and any money set aside for a deposit. Consider your investment accounts, such as stocks, bonds, and retirement funds. These assets can provide financial security and may be used to support your mortgage application.

Understanding Mortgage Basics

Familiarise yourself with the fundamental components of a mortgage to better understand what you’re committing to.

Principal and Interest

A mortgage consists of the principal, which is the amount you borrow, and the interest, which is the cost of borrowing that money. Your monthly mortgage payment will cover both these components, reducing the principal over time while also paying interest to the lender.

Loan Types and Terms

Mortgage products vary, so it’s important to understand the differences:

  • Fixed-Rate Mortgages: The interest rate remains constant for a set period, (usually 1, 2 or 5 years), providing predictable monthly payments for a fixed period.
  • Variable-Rate Mortgages: The interest rate can fluctuate based on market conditions, leading to higher (or lower) monthly payments over time.
  • Short-Term vs Long-Term Loans: Short-term loans typically have higher monthly payments but lower overall interest costs, while long-term loans (30 years) have lower monthly payments but higher total interest costs.

Additional Costs

When calculating your mortgage affordability, consider additional costs beyond the monthly payment:

Calculating Mortgage Affordability

To determine how much you can afford to borrow, the best way is to speak to a top mortgage broker. They will ask you certain questions, look at some of your documents, and assess your financial situation, before estimating the amount you can borrow.

If you want to calculate it quickly before speaking to a broker, you can also use a Borrowing Power Calculator, such as the one found below. You can enter your income details, expenses, and current interest rates, to estimate not only the amount you can borrow, but how much each monthly repayment will be, to see if it is affordable for your personal situation.

Getting Pre-Approved for a Mortgage

Obtaining pre-approval from a lender will provide a clear understanding of how much you can borrow and strengthen your position as a buyer.

Pre-Approval Process

The pre-approval process involves several steps:

  1. Document Collection: Gather documents such as proof of income, credit history, bank statements, and details of assets and liabilities.
  2. Lender Assessment: Submit your documents to the lender, who will assess your financial situation and creditworthiness.
  3. Pre-Approval Letter: If approved, you’ll receive a pre-approval letter stating the maximum loan amount you’re eligible for.

Benefits of Pre-Approval

Pre-approval provides several benefits:

  • Budget Clarity: You’ll know your borrowing limit, helping you focus on properties within your budget.
  • Buyer Confidence: Sellers and real estate agents will view you as a serious buyer, giving you an edge in competitive markets.

Consulting a Mortgage Broker

Mortgage brokers can provide access to a wide range of loan products and negotiate better terms on your behalf. They offer:

  • Loan Comparison: Brokers work with multiple lenders, giving you access to a variety of mortgage products.
  • Expert Negotiation: Experienced brokers can negotiate better interest rates and terms, potentially saving you money over the life of the loan.
  • Application Assistance: Brokers can help with the paperwork and streamline the application process, making it less stressful.

Considering Future Financial Stability

When determining your mortgage affordability, it's crucial to consider your future financial stability to ensure you can manage your mortgage long-term. 

Job Security and Income Stability

Evaluate your job security and future earning potential. If your job situation is uncertain, or if you plan on starting a family, and taking time off work, it’s wise to be more conservative with your borrowing. You also need to take into account increased expenses if you start a family.

Long-Term Financial Goals

Consider your long-term financial goals, such as retirement, children’s education, and major purchases. Ensure your mortgage payments don’t hinder your ability to save for these goals.

Emergency Fund

Maintaining an emergency fund is crucial. Unexpected expenses or job loss can impact your ability to make mortgage payments. Aim to have at least three to six months’ worth of living expenses saved in an emergency fund.


Determining how much mortgage you can afford in Australia requires a thorough assessment of your financial situation, understanding mortgage basics, and using various tools and professional advice. By evaluating your income, expenses, savings, and long-term goals, you can make an informed decision about your mortgage affordability. Consulting with a mortgage broker can provide additional insights and help you navigate the complex mortgage market. 

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