Your borrowing capacity depends on your income, existing debts, living expenses, and the loan to value ratio (LVR) the lender is comfortable with.
Most people start their property search by looking at what they'd like to buy, then work backwards to see if they can afford it. That approach causes problems. You might spend weeks attending open homes in Mount Eliza, fall in love with a property near Canadian Bay Beach, then discover your borrowing capacity is $150,000 less than you expected. Starting with a clear picture of what you can borrow saves you from that disappointment and lets you focus your search on properties within reach.
Income Is Only Part of the Calculation
Lenders assess your income after tax and multiply it by a factor that varies between lenders, but your take-home pay is just the starting point. They also look at your fixed commitments including credit cards, personal loans, car loans, and other debts. Even if you pay your credit card off in full each month, the lender assumes you could draw the full limit at any time. A $10,000 credit card limit might reduce your borrowing capacity by $50,000 or more depending on how the lender calculates serviceability.
Consider a buyer earning $120,000 per year who wants to purchase in Mount Eliza. They have a car loan with $15,000 remaining and two credit cards with combined limits of $20,000. Those commitments alone could reduce their maximum loan amount by $100,000 to $150,000 compared to someone with the same income and no debt. Closing unused credit accounts before you apply for a home loan improves what you can borrow.
Living Expenses Get Adjusted by the Lender
You'll declare your monthly living costs when you apply, but lenders don't always accept what you state. They use a benchmark figure called the Household Expenditure Measure (HEM) which estimates what someone in your situation should be spending based on your family size and location. If you say your expenses are lower than HEM, many lenders will ignore your figure and use theirs instead. This matters because higher assessed expenses reduce how much you can borrow.
For a single person living in Mount Eliza, the HEM figure might be around $2,500 per month. For a family of four, it could be closer to $4,500 or more. If you're genuinely living on less, you'll need to show evidence through bank statements, and even then some lenders won't adjust their assessment. In our experience, buyers who understand this early can make informed decisions about which lenders to approach rather than being surprised when the initial borrowing estimate drops after a full assessment.
Ready to get started?
Book a chat with a Finance & Mortgage Broker at Blank Financial today.
The Deposit Size Changes Your Options
The loan to value ratio (LVR) determines how much you can borrow relative to the property value. Most lenders cap standard home loans at 80% LVR without requiring Lenders Mortgage Insurance (LMI). If you're buying a property worth $900,000 in Mount Eliza, an 80% LVR means you'd need a $180,000 deposit plus costs, and the lender would provide $720,000. You can borrow at higher LVRs up to 95% with some lenders, but you'll pay LMI which adds thousands or tens of thousands to your upfront costs.
LMI protects the lender if you default, not you. The premium varies based on your LVR and loan amount, and it's a one-off cost that you can often add to the loan itself rather than paying upfront. For first home buyers in particular, understanding how LMI affects your borrowing capacity matters because you might qualify for a higher loan amount but still need to cover that insurance cost within your overall budget.
Owner Occupied vs Investment Loans
Lenders assess your borrowing capacity differently depending on whether you're buying a home to live in or to rent out. An owner occupied home loan typically allows you to borrow more than an investment loan because lenders apply different serviceability buffers. They also treat rental income conservatively, usually only counting 80% of the expected rent to allow for vacancies and maintenance costs.
If you're looking at Mount Eliza properties as an investment, your borrowing capacity might be 10% to 15% lower compared to buying the same property to live in. That difference becomes significant when properties in the area often range from $800,000 to over $1.5 million. Knowing which loan type you need before you calculate your capacity prevents you from targeting properties you can't actually finance.
Rate Type Affects Serviceability
Lenders assess your ability to repay based on a higher interest rate than what you'll actually pay. This is called the assessment rate or buffer. Even if you're applying for a variable rate loan at current rates, the lender might test your serviceability at 3% or more above that. Fixed interest rate home loans are assessed the same way. This buffer exists to make sure you can still afford the repayments if rates rise.
The buffer means your actual repayments will be lower than what the lender uses for approval. You might qualify for a $700,000 loan based on an assessment rate of 8%, but your actual repayments could be calculated on a variable interest rate around 6%. This gap gives you breathing room if rates increase, but it also means you can't borrow as much as your current income and expenses might technically support.
How Blank Financial Can Help You Understand Your Capacity
We access home loan options from banks and lenders across Australia, and each one calculates borrowing capacity slightly differently. One lender might give you $50,000 more than another based on how they treat your income type, your expenses, or your existing debts. Running your situation through multiple lenders shows you the range of what's possible rather than getting a single answer that might not be the full picture.
We also look at how changes to your financial position could improve borrowing capacity before you apply. Paying down a personal loan, closing unused credit cards, or adding a guarantor can all shift the numbers. If you're looking at properties in Mount Eliza or across the Mornington Peninsula, understanding what you can borrow before you make an offer means you're not relying on guesswork when it's time to commit.
Call one of our team or book an appointment at a time that works for you. We'll run a full assessment of your borrowing capacity and show you which lenders are likely to give you the strongest outcome based on your situation.
Frequently Asked Questions
How do lenders calculate how much I can borrow for a home loan?
Lenders assess your income after tax, subtract your existing debts and living expenses, then apply a serviceability buffer based on an interest rate higher than what you'll actually pay. The loan to value ratio (LVR) also affects how much you can borrow relative to the property value.
Does a credit card limit reduce my borrowing capacity even if I pay it off each month?
Yes, lenders assume you could draw the full credit limit at any time, even if you never carry a balance. A $10,000 credit card limit can reduce your maximum loan amount by $50,000 or more depending on the lender's assessment method.
Can I borrow more for an owner occupied home loan than an investment loan?
Yes, lenders typically allow higher borrowing capacity for owner occupied home loans because they apply different serviceability buffers. Investment loans also factor in rental income conservatively, usually at 80% of expected rent.
What is Lenders Mortgage Insurance and how does it affect what I can borrow?
Lenders Mortgage Insurance (LMI) is required when you borrow more than 80% of the property value. It protects the lender if you default and adds to your upfront costs, but it does allow you to borrow with a smaller deposit.
Why do lenders use a higher interest rate to assess my borrowing capacity?
Lenders apply a serviceability buffer, typically 3% or more above the actual interest rate, to make sure you can still afford repayments if rates increase. This means your actual repayments will be lower than what the lender uses for approval.
