Jul 23rd, 2025

Understanding Expenses and Debt-to-Income (DTI) Ratios in Australian Mortgage Applications

Mortgage Expenses Overview

How Lenders Evaluate Expenses and Debts in Australian Home Loans

When you apply for a mortgage in Australia, lenders don’t just look at your salary. They’ll also assess your living expenses and existing debts to determine how much you can borrow and whether you qualify for a home loan.

Key Expense Categories

1. Household Expenditure Measure (HEM)

The HEM is a standardized benchmark that estimates minimum living costs based on:

  • Household size
  • Income level
  • Location
  • Number of dependents

Many lenders use the HEM instead of asking you to detail every expense. For example, a single applicant with three dependents might have a monthly HEM of around $4,800—even if their actual spend is lower.

Household Expenditure Measure (HEM)

2. Existing Loan Repayments

All current obligations count, including:

  • Mortgages
  • Car loans
  • Personal loans
  • Any other scheduled repayments

Lenders will see how these debts sit alongside the new home loan.

Depreciation Guide

Discover the #1 tax secret wealthy Australian property investors use to grow their portfolios faster — even in a high interest rate environment.

  • Learn how to turn wear and tear into wealth
  • See real examples of $15,000+ first-year deductions
  • Understand how to structure your purchases for maximum after-tax ROI

Download Your Free Wealth Building Guide

This ebook reveals how to legally slash your tax bill while building long-term wealth through property. Learn the strategies savvy investors use to gain an edge — even before settlement.

  • Maximise tax deductions and improve cash flow
  • Understand Division 40 vs 43 and how to claim both
  • Position yourself to reinvest and scale faster
Free Instant Access

3. Credit Card Limits

Even if your balance is low, lenders typically assume you’ll pay 3–5% of your total credit limit each month. A $16,000 limit could add about $480/month to your outgoings.

4. HECS/HELP Obligations

Higher Education Loan Program (HELP) debts trigger annual repayments once you earn above the threshold, reducing your net income and borrowing capacity.

5. Other Regular Costs

Additional recurring expenses include:

  • Private school fees
  • Childcare
  • Rent (if you still rent)
  • Insurance premiums

Debt-to-Income (DTI) Ratio

The DTI ratio divides your total liabilities by your gross income. Most Australian lenders cap this at around 6:1.

Debt-to-Income Ratio Illustration

For example, if your annual income is $100,000, your total debts shouldn’t exceed $600,000. If you already owe $450,000, you could borrow up to $150,000 more—subject to your cash flow and expense profile.

Tips to Strengthen Your Application

  • Pay down existing debts such as personal or car loans.
  • Reduce or cancel unused credit cards to lower assumed repayments.
  • Boost your income through overtime, a side gig, or adding another applicant.
  • Shop around for lenders who accept your actual expenses instead of using the HEM.

Understanding how lenders view your financial commitments can help you maximise your borrowing power and increase your chances of home loan approval. For a tailored assessment and strategy, explore our financial planning consultation.

@

Feel like you’ve been knocked out by the tax man? You’re not alone — but the wealthy don’t just sit there dazed. They fight back with strategy. They buy new builds — for maximum depreciation, generou...

@

Most people think property investing is about finding the ‘perfect time’ or scoring a bargain. The wealthy know better. They buy early, build smart, and hold long — using depreciation, tax offsets, an...

@

The wealthy aren’t buying homes… they’re buying leverage. You’re saving for a deposit — they’re extracting equity from their 3rd duplex. 👀 Watch how the game is really played. #PropertyInvesting #Wea...

You may also like

Related posts

How CBA’s New Policy Impacts Home Loan Serviceability – What Property Investors Should Know

CBA's Innovative Home Loan Approach: A New Era? The Commonwealth Bank of Australia (CBA) has rolled out a potentially revolutionary home loan policy. Under this new rule, borrowers can now include up to $150 per week from a single boarder’s payment as part of their income when assessing the serviceability...

May 16th, 2025
10 months ago
Renting Out a Room in Your Home: Tax, CGT, and Borrowing Impacts Explained

Boost Your Income and Borrowing Capacity by Renting Out a Room Renting out a room in your principal place of residence (PPOR) is a savvy method to increase your cash flow and may even enhance your borrowing capacity. However, it comes with important tax, capital gains, and compliance considerations that...

May 7th, 2025
10 months ago
How Jennifer and George Can Buy 3 Investment Properties in 3 Years

Three-Property Investment Plan for Jennifer & George Jennifer and George aim to acquire three investment properties in Ormeau (QLD) or nearby within three years. With a combined gross income of $187,000, $70,000 in savings, $1,600/week rent, a $30,000 car loan, and a dependent grandchild, they need a staged strategy to...

Jul 27th, 2025
7 months ago
Straightforward process

Ready to take control of your financial future?

01
Discovery Q&A:

We begin with a personalized discovery Q&A to understand your goals, risk tolerance, and financial situation.

02
Custom Strategy:

Based on your needs, we craft a strategic investment or financial plan tailored just for you.

03
Ongoing Support:

We help you track progress, optimize decisions, and adjust your plan as your life and markets evolve.

04
Financial Freedom:

With a clear roadmap and expert guidance, you move confidently toward long-term wealth and peace of mind.

28+ Years guiding investors
Plan Your Investment Strategy

Understand your goals and build a tailored strategy—whether you're focused on cashflow, capital growth, or long-term wealth creation.

Access the Right Opportunities

Explore high-growth areas, new builds, house & land packages, or SMSF-ready properties matched to your financial profile.

Build Long-Term Wealth

Leverage tax advantages, depreciation, and smart lending strategies to maximise returns and grow your portfolio sustainably.

Start Your Investment Journey

Smart Property Investing Starts Here

Whether you're a first-time investor or growing your portfolio, we provide the guidance, tools, and insights you need to make informed decisions and secure high-performing properties. Let us help you turn property into prosperity.