Why Your Credit Score Matters for Home Loans

Your credit score directly affects which lenders will approve your home loan application and what interest rate you'll pay.

Lenders use your credit score as a measure of risk. A higher score signals that you've managed credit responsibly in the past, which translates to access to more loan products and better pricing. A lower score doesn't automatically disqualify you from getting a home loan, but it does narrow your options and may result in higher costs or the need for a larger deposit.

How Lenders Use Credit Scores During Assessment

Lenders pull your credit report from one or more credit bureaus during the application process. That report shows your score, which typically ranges from zero to 1,200, along with details of every credit account you've held, payment history, defaults, court judgments, and bankruptcy records.

Most mainstream lenders have a minimum score threshold, often around 600 to 650, below which they'll decline an application automatically. Some lenders are more flexible and will assess applications with scores in the 500s, but they usually charge a higher interest rate or require a larger deposit to offset the perceived risk. Specialist lenders who work with borrowers recovering from credit issues may accept scores below 500, but their rates are typically higher again.

Beyond the number itself, lenders review the detail behind your score. A single missed payment from three years ago has less impact than multiple recent defaults. Similarly, a paid default is viewed more favourably than one that remains unpaid. The type of credit also matters: multiple payday loans or consumer finance arrangements carry more weight than a single personal loan that's been repaid on time.

The Interest Rate Difference Between Score Bands

The gap between what a borrower with a strong credit profile pays and what someone with a lower score pays can be significant. A borrower with a score above 800 might access a variable rate with a discount that brings the rate close to the advertised lowest rates from major lenders. Someone with a score in the low 600s applying with the same lender might receive a smaller discount or none at all, which could mean paying an additional 0.5% to 1% on the same loan amount.

Consider a borrower applying for a $500,000 owner occupied home loan on a 30-year term. At a variable interest rate of 6.0%, monthly repayments would sit around $3,000. If that same borrower's credit score pushes them into a higher risk category and the rate increases to 6.5%, repayments rise to roughly $3,160 per month. Over the life of the loan, that difference adds tens of thousands of dollars in extra interest, purely as a result of credit history.

Some lenders don't offer tiered pricing based on credit scores but instead decline applicants who fall below their threshold. Others build risk-based pricing into their product suite, which means your score directly influences the rate discount applied to your application.

What Pulls Your Credit Score Down

Missed payments are the most common cause of a declining score. A payment that's 14 days overdue won't usually appear on your credit file, but once it hits 30 days or more, the default gets recorded. Even if you catch up the following month, the record stays on your file for five years in most cases.

Multiple credit applications within a short period also lower your score. Each time you apply for credit, the lender conducts a hard inquiry, which is recorded on your file. A few inquiries over the course of a year is normal, but ten inquiries in three months signals financial stress or credit seeking behaviour, both of which lenders view negatively. This is particularly relevant when applying for a home loan, as some borrowers make the mistake of applying directly with several lenders to compare offers, not realising that each application leaves a mark.

Unpaid defaults, court judgments, and bankruptcy filings have the most severe impact. A single unpaid default of $500 can reduce your score by 100 points or more, depending on the scoring model used by the bureau. Judgments and bankruptcies remain on your file for longer periods and often result in automatic declines from most mainstream lenders.

High credit utilisation, which refers to the percentage of your available credit limit that you're using, also affects your score. If you have a $10,000 credit card limit and consistently carry a balance of $9,000, lenders interpret that as a sign you're financially stretched. Keeping utilisation below 30% across all credit accounts is generally recommended.

Improving Your Score Before Applying

If you're planning to apply for a home loan in the next six to twelve months, there are practical steps that can lift your score during that period. Start by requesting a copy of your credit report from each of the major bureaus: Equifax, Experian, and Illion. You're entitled to one report per year at no cost, and reviewing it allows you to identify errors or outdated information that might be dragging your score down.

Disputes can be lodged directly with the bureau if you find incorrect entries. Common errors include defaults that have been paid but still show as outstanding, accounts that don't belong to you, or duplicate listings of the same debt. The bureau is required to investigate and update your file if the dispute is upheld, which can result in an immediate score improvement.

Paying down existing debt makes a measurable difference, particularly on credit cards and personal loans. Reducing your total debt also improves your borrowing capacity, which is assessed separately from your credit score but equally important during the home loan application. Lenders calculate how much you can borrow based on your income, expenses, and existing commitments, so clearing or reducing debt increases the loan amount you're eligible for.

Avoiding new credit applications in the months leading up to your home loan application prevents unnecessary hard inquiries. If you need to compare home loan options, work with a mortgage broker who can assess your situation and submit your application to a single lender rather than testing the market with multiple applications. This approach protects your score while still giving you access to a wide range of lenders and products.

In situations where your score has been affected by genuine hardship, such as illness or job loss, some lenders will consider a letter of explanation alongside your application. This won't override a low score, but it provides context that may influence the decision, particularly if your financial position has since stabilised.

When a Lower Score Doesn't Stop Approval

A lower credit score doesn't always mean a declined application, especially if other aspects of your financial profile are strong. A borrower with a score in the low 600s but a 30% deposit, stable employment, and no recent missed payments may still be approved by lenders who assess applications holistically rather than relying solely on the score.

Some lenders specialise in working with borrowers who have credit impairments. These lenders typically charge higher rates and may cap the loan to value ratio at 80% or lower, meaning you'll need a deposit of at least 20% to avoid Lenders Mortgage Insurance. In cases where LMI is required, the premium is usually higher for applicants with lower scores, which adds to the upfront cost of securing the loan.

In our experience, borrowers who've had a default or missed payment in the past but have since maintained a clean record for 12 to 24 months can often access mid-tier lenders who offer more competitive rates than specialist lenders but more flexibility than the major banks. The key is demonstrating that the credit issue was an isolated event rather than a pattern of behaviour.

How Refinancing Affects Your Score

Refinancing your home loan involves a new credit application, which means another hard inquiry on your file. The impact is usually minor if you're refinancing once every few years, but if you refinance multiple times within a short period, the cumulative effect on your score can be noticeable.

That said, refinancing to consolidate high-interest debt or secure a lower rate can improve your overall financial position, which may offset the temporary dip in your score. If you're refinancing to roll credit card debt or personal loans into your home loan, the reduction in monthly commitments can improve your borrowing capacity for future applications, even if your score takes a small hit in the short term.

Before refinancing, it's worth checking your current credit score and ensuring there are no recent issues that might affect approval. If your score has dropped since you took out your original loan, you may not qualify for the same rate or loan amount, particularly if you're also increasing the loan balance.

Call one of our team or book an appointment at a time that works for you to discuss how your credit profile affects your home loan options and what steps you can take to strengthen your application.

Frequently Asked Questions