How Much Can I Borrow? A Guide to Your Home Loan Limits

If you’re asking “how much can I borrow?” you’re likely already past the early research stage. At this point, you’re not just looking for a rough estimate. You want to know whether your borrowing limit is fixed or if there are realistic ways to improve it before making a property decision.

Your borrowing power (sometimes referred to as borrowing capacity) isn’t based on a single formula. While income plays a role, lenders also assess your debts, expenses, credit limits, loan structure and even how your income is categorised.

That’s why two borrowers with similar numbers can receive very different outcomes.

Below, we explain what borrowing power is and expand on the fundamentals already covered on this page. We will also outline 8 reliable, lender-approved ways that may help increase how much you can borrow for a mortgage, without risky shortcuts or assumptions.

What Is Borrowing Power?

Let’s begin by understanding what borrowing power is. Your borrowing power is the maximum amount a lender is willing to lend you for a home loan. Think of it as a balance between what you can afford and what a lender is comfortable letting you borrow. Several factors play into this calculation. These include:

• Your Income – The more you earn, the higher your borrowing power.
• Existing Debts – Loans, credit cards and other financial obligations can reduce your borrowing capacity.
• Credit Score – A good credit history gives lenders confidence in your ability to repay the loan.
• Living Expenses – Lenders look at how much you spend monthly on essentials like groceries, utilities and transport.

Calculating Your Borrowing Power

Now that you know what factors affect your borrowing power, the next thing to figure out is how lenders calculate your borrowing power. It’s not rocket science and it isn’t that big a mystery either since many use borrowing power calculators. These calculators give you an estimate based on your financial details. Here’s a simplified example:

Let’s say you earn $80,000 annually and have $5,000 in monthly expenses. Based on this, a lender might determine that you can borrow up to $400,000, assuming interest rates remain stable.

Remember, though, when you use a borrowing power calculator, all you will get are estimates. A lender’s final decision also takes factors like current interest rates, repayment terms and their internal policies into account.

Factors That Influence Home Loan Limits

In Australia, several elements can impact your borrowing limits. These include:

• Lender Policies – Different lenders have different rules. Some may let you borrow more, while others might lend you less.
• Interest Rates – Higher interest rates reduce how much you can afford to repay, which in turn lowers your borrowing power.
• Debt-to-Income Ratio (DTI) – Most lenders prefer your debts (including the new loan) to stay below a certain percentage of your income.
• Stress Tests – Lenders test your ability to handle a hypothetical 3% increase in interest rates to ensure you won’t face financial strain. This is called their assessment rate.

Tips to Increase Your Borrowing Power

For those who are wondering “How much can I borrow for a mortgage?” or “How much can I borrow for a mortgage loan?” you should know that if the amount you get seems low, you can increase it by boosting your borrowing power. How do you boost your borrowing capacity? Here are some practical steps:

1. Improve Your Credit Score – Pay your bills on time, clear credit card balances and avoid applying for new credit unnecessarily.
2. Reduce Existing Debts – Paying down loans or consolidating debt can free up more of your income for loan repayments.
3. Increase Your Income – Easier said than done, but a raise at work, a side hustle, or combining incomes with a partner can make a big difference.
4. Cut Back on Expenses – Reducing discretionary spending can improve the surplus funds lenders see when assessing your application.

How Much Can I Borrow? 8 Ways to Boost Your Limit

If you’re serious about understanding the factors that affect the answer to the  question of “how much can I borrow for a mortgage loan?”, these are practical strategies that lenders genuinely consider when assessing applications.

1. Reduce or Close Unused Credit Card Limits

Even if a credit card is rarely used, lenders often assess it as if it’s fully maxed out. Lowering limits or closing unused cards can immediately improve your borrowing capacity and positively impact how much you can  borrow.

2. Minimise Existing Debts Before Applying

Car loans, personal loans, HELP/HECS debts and buy-now-pay-later facilities all reduce your available surplus income. Reducing these liabilities can materially increase your borrowing power.

3. Increase Your Deposit Where Possible

A stronger deposit doesn’t just reduce lender risk. It can also improve assessment outcomes. In many cases, this helps increase how much you can borrow for a mortgage, particularly when combined with stable income and clean credit.

4. Review and Tighten Ongoing Living Expenses

Lenders apply conservative benchmarks when assessing expenses. Cleaning up subscriptions, discretionary spending, and household costs can strengthen how your application is assessed.

5. Optimise How Your Income Is Assessed

Not all lenders treat income the same way. Overtime, bonuses, rental income, and allowances may be accepted differently depending on policy. Choosing the right lender can significantly affect the answer to the “how much can I borrow?” question.

6. Choose the Right Loan Structure and Term

Loan term length, repayment type, and product selection all influence serviceability. In some cases, adjusting the structure (without increasing risk) can improve borrowing capacity.

7. Select a Lender With More Favourable Policies

There is no universal borrowing limit. Different lenders apply different serviceability buffers and debt rules. This means that finding out the answer to “how much can I borrow for a mortgage loan” can vary widely between banks.

8. Work With a Mortgage Broker Who Compares Lenders

A broker doesn’t just calculate your borrowing capacity when you ask them “how much can I borrow?” They compare lenders, structure the application correctly and avoid policy traps that can unnecessarily cap your approval.

Borrowing Limits for Different Loan Types

The answer to the “how much can I borrow” question is also dependent on the type of loan you’re planning on getting. Note that not all loans are created equal. Your choice of loan can affect how much you can borrow. Here are some common types of loans and what to expect:

• Fixed-Rate Loans – Offer stability with predictable repayments but might have stricter borrowing limits.
• Variable-Rate Loans – More flexible, but your repayments can change with interest rates.
• Low-Doc Loans – Ideal for self-employed borrowers but often come with lower borrowing limits or higher interest rates.
• First-Home Buyer Loans – Some programs, like the First Home Loan Deposit Scheme, can boost your borrowing capacity by reducing upfront costs.

“How Much Can I Borrow” Isn’t a Fixed Number

One of the biggest misconceptions borrowers have is assuming the answer to the question of “how much can I borrow” is a single, fixed figure.

In reality, your borrowing power can change based on:

• Lender policy
• Loan structure
• How debts and income are assessed
• How your application is presented

This is why online tools are useful as a guide. Note, however, that these shouldn’t be the final word when you’re making a buying or refinancing decision.

How Small Changes Can Increase How Much You Can Borrow

Consider a borrower earning $110,000 per year who initially calculates around $520,000 to answer his question of “how much can I borrow?”

After reducing unused credit card limits, improving their deposit position and choosing a lender with more favourable income treatment, their assessed borrowing capacity may increase. Sometimes this increase can be enough to access better property options or avoid compromising on location or features.

Every situation is different, but this example highlights why the result of calculations to determine “how much can I borrow for a mortgage” is rarely a one-size-fits-all answer.

Why Strategy Matters at the Decision Stage

When borrowers are on the verge of a home purchase, they aren’t just asking “how much can I borrow?” They want certainty before making a property decision.

By this stage, improving borrowing capacity isn’t about drastic changes. It’s about:

• Choosing the right lender
• Presenting your financial position correctly
• Avoiding assumptions based on generic tools

This strategic approach often makes the difference between missing out and moving forward confidently.

Get Professional Advice from NBHL to Answer the “How Much Can I Borrow” Question

Navigating the world of home loans can feel overwhelming. Sometimes the answers you get via your research to the “how much can I borrow” question can be unsatisfying. This is when professionals like our mortgage brokers here at NBHL can help. They can:

• Help you understand your borrowing power.
• Find lenders and loan products suited to your situation.
• Negotiate better terms on your behalf.

If your financial situation is complex, consulting members of our team can prove to be invaluable.
So, are you ready to find out how much you can borrow? Contact us so we can get one of our expert mortgage brokers to give you personalised guidance. The sooner you understand your limits, the closer you’ll be to your dream home.