Credit Score Australia Explained: What It Is, How It Works, and How to Improve It

Your credit score is a numerical summary of your creditworthiness — how likely lenders think you are to repay money they lend you. In Australia, credit scores are calculated by three credit bureaus: Equifax (the most widely used by lenders), Experian, and Illion. Each bureau uses slightly different scoring models, which is why your score can vary depending on which one you or a lender checks.

Equifax scores range from 0 to 1,200, where a higher score is better. Experian and Illion use a 0–1,000 range. Most Australians have a score between 400 and 900. Lenders access your credit report when you apply for any form of credit — home loan, car loan, credit card, personal loan, and increasingly, BNPL services under the new 2025 regulations. Your credit score can determine whether you're approved, what interest rate you're offered, and what credit limit is extended.

Australian credit scoring uses a comprehensive credit reporting system, which means both positive and negative information is reported. Key factors that affect your score include:

Repayment history (most impactful): Whether you pay bills and loan repayments on time. Even one 60-day overdue payment can reduce your score significantly. Credit enquiries: Each time you formally apply for credit, a hard enquiry is recorded. Multiple applications in a short period signal financial stress to lenders and reduce your score. Credit utilisation: How much of your available credit you're using. High utilisation (using 80%+ of your credit card limit) reduces your score. Defaults, bankruptcies, and court judgements: These are the most damaging items and stay on your file for 5–7 years. Positive history: Length of credit history, consistent on-time payments, and variety of credit types (mortgage, personal loan, card) all contribute positively.

Using Equifax's 0–1,200 scale: Below 459 = Below Average (may be declined for most credit), 460–659 = Average (approved for some products at higher rates), 660–734 = Good (approved for most products at standard rates), 735–852 = Very Good (competitive rates available), 853–1,200 = Excellent (access to best rates and largest credit limits).

For a home loan application, most major banks want to see a score of 600+ for approval, with the best rates reserved for 700+. For a competitive personal loan rate, 650+ is typically required. For credit cards, most standard cards approve applicants with 500+ scores, though premium reward cards may require 700+. Your specific score threshold varies by lender — what matters is improving your score as much as possible before major credit applications.

You're entitled to one free credit report per year from each of the three bureaus. You can get your Equifax report free via annualcreditreport.com.au or via services like Credit Savvy and GetCreditScore (which provide ongoing monitoring). Check your report for any errors — incorrect defaults or enquiries that aren't yours — as these can be disputed with the bureau and removed.

To improve your score: pay every bill on time (set up direct debits for minimum repayments as a safety net), reduce credit card utilisation to below 30% of your limit, avoid applying for multiple credit products in a short period, and address any defaults by paying them (paid defaults are less damaging than unpaid ones, though they remain on file for 5 years). Building positive history takes time — most meaningful improvements occur over 6–18 months of consistent behaviour.

Does checking my own credit score reduce it? No. Checking your own report is a 'soft enquiry' and has no impact on your score. Only formal credit applications by lenders create hard enquiries that can affect your score.

How long do negative items stay on my credit file? Payment defaults: 5 years. Serious credit infringements (default where you've left the country): 7 years. Bankruptcies and debt agreements: 5 years from the date of resolution. Court judgements: 5 years. Enquiries (hard): 5 years but the impact fades after 1–2 years.

My credit score dropped suddenly — what happened? Common causes: a new credit application was made, you missed a repayment, your credit card limit was reduced (increasing your utilisation ratio), or a default was listed. Check your credit report for recent changes.

Can I remove a default from my credit file? Only if it was listed in error (wrong person, incorrect amount, you were not notified properly). If a default is accurate, it remains for 5 years regardless of whether you've since paid it. Paying it changes it from 'unpaid default' to 'paid default', which is slightly less damaging.

Does being on Centrelink affect my credit score? Being on Centrelink is not directly reported to credit bureaus and doesn't affect your credit score. What matters is repayment behaviour, not income source. However, income level affects lenders' assessment of your repayment capacity separately from your credit score.