Can I Afford a $1,500,000 Mortgage? A Guide for Australian Homebuyers | Esteb and Co
general 2026-01-18 • 3 min read

Can I Afford a $1,500,000 Mortgage? A Guide for Australian Homebuyers

Purchasing a home is one of the most significant financial decisions many Australians will make in their lifetime. As property prices continue to rise, especially in metropolitan areas, the idea of a $1,500,000 mortgage is becoming increasingly common. But how do you determine if you can afford such a substantial loan? This guide will walk you through the key considerations, practical steps, and potential pitfalls to help you make an informed decision.

Can I Afford a $1,500,000 Mortgage? A Guide for Australian Homebuyers

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Understanding Your Borrowing Capacity

Before determining if you can afford a $1,500,000 mortgage, you need to understand your borrowing capacity. Lenders in Australia use several criteria to assess this, including your income, expenses, existing debts, and credit history. Generally, banks employ a debt-to-income (DTI) ratio, ensuring that your total debts do not exceed a certain percentage of your income. As of recent trends, a DTI ratio of 6-7 times your annual income is commonly used.

Key Expenses to Consider

Loan Repayments

The most immediate expense is the loan repayment itself. Using an average interest rate of around 6.0% per annum (as rates constantly fluctuate, always check the current rates), a $1,500,000 mortgage over 30 years would require monthly repayments of approximately $8,990. This figure does not include any fees or insurance, which could significantly increase your monthly outgoings.

Additional Costs

Don't forget additional costs such as stamp duty, lender’s mortgage insurance (LMI) if your deposit is less than 20%, and ongoing maintenance costs. For a $1,500,000 property, stamp duty in NSW, for instance, could be upwards of $67,000.

Practical Tips for Affording a Large Mortgage

Budgeting Wisely

Start with a detailed budget to identify how much you can allocate towards your mortgage repayments. Consider using budgeting apps or consulting with a financial advisor to get an accurate picture.

Increase Your Deposit

A larger deposit reduces the loan amount and potentially eliminates the need for LMI. Aim for at least 20%—in this case, $300,000.

Boost Your Borrowing Power

Improving your credit score and reducing existing debts can enhance your borrowing power. Ensure all your bills are paid on time and consider consolidating smaller debts.

Common Mistakes to Avoid

Overestimating Income Stability

Avoid banking on future income increases or bonuses unless they are guaranteed. Lenders will typically assess your current income, so ensure it’s sustainable.

Ignoring Interest Rate Changes

Interest rates can rise, increasing your repayments. Factor in a buffer, ideally allowing for a 2-3% rate increase, to ensure your mortgage remains affordable.

How Esteb and Co Can Help

At Esteb and Co, we understand the complexities of securing a large mortgage. Our experienced brokers offer personalized advice, helping you navigate the application process, assess different lenders, and secure competitive rates. We can assist you in creating a financial strategy that aligns with your homeownership goals.

Frequently Asked Questions

Q: What is the minimum deposit required for a $1,500,000 mortgage?

A: Typically, a 20% deposit ($300,000) is recommended to avoid LMI, though some lenders may accept less with additional costs.

Q: How do interest rates affect my mortgage repayments?

A: Higher interest rates increase your repayment amounts. For instance, a 1% increase on a $1,500,000 loan could add approximately $900 to monthly repayments.

Q: Can I include stamp duty in my mortgage?

A: Some lenders allow this, but it increases your loan amount and may require LMI. It's crucial to check with your lender.

Q: What is lender’s mortgage insurance (LMI)?

A: LMI protects the lender if you default on your loan. It's generally required if your deposit is less than 20%.

Q: How can I improve my credit score before applying for a mortgage?

A: Pay bills on time, reduce existing debts, and avoid applying for multiple credit products in a short period.

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Ricky Esteb - Licensed Mortgage Broker
Richard (Ricky) Esteb
Licensed Mortgage Broker & Founder
Credit Rep #574071 ACN 681 636 056 83+ Lender Panel

With direct experience helping Australians secure home loans, car finance, and business funding, Ricky founded Esteb and Co to bring transparency and technology to mortgage broking.

✓ Verified & Last Reviewed: 2026-01-18 | Content meets ASIC regulatory requirements