Understanding Credit Limits and How They Work

Credit limits play a critical role in personal finance in Australia. They affect your borrowing capacity, credit score, and overall financial management.

Whether you are applying for your first credit card or managing multiple credit facilities, understanding how credit limits are set, regulated, and adjusted is essential to making informed financial decisions.

This guide explains what credit limits are, how lenders determine them, how Australian laws regulate credit, the impact they have on your finances, and the differences between credit types.

What Are Credit Limits and How Are They Set?

A credit limit is the maximum amount of money a lender allows you to borrow on a credit product, such as a credit card or line of credit.

In Australia, when you apply for a credit card, you can nominate a preferred limit, but the final decision rests with the lender. They will assess your overall financial situation to decide how much you can safely borrow.

Australian lenders use several factors to determine your credit limit:

• Income level – Higher income typically supports a higher limit.
• Credit history – A positive repayment record increases your approval chances.
• Existing debts – Lenders evaluate your ongoing liabilities to assess repayment capacity.
• Living expenses – Banks analyse your spending patterns and essential expenses.
• Risk profile – Your employment stability, credit score, and banking behaviour matter.

For example, someone earning AUD 85,000 annually with minimal debts may be offered a credit limit of AUD 12,000, while a person with irregular income and multiple active loans may be approved for AUD 3,000 or less.

Average Credit Limits in Australia

According to Finder and Canstar, the average credit limit in Australia is around AUD 9,989. However, this varies by bank, income bracket, and card type. Premium credit cards can offer limits above AUD 30,000, but they also require stronger financial credentials.

How Lenders Decide Your Limit

Lenders rely on a combination of credit checks and affordability assessments. They access your credit file through agencies such as Equifax or Experian to review:

• Payment history
• Credit enquiries
• Outstanding debts
• Defaults or late payments

This ensures lenders only approve limits you can realistically manage, reducing the risk of financial stress.

The Role of Responsible Lending and Regulations in Australia

Credit in Australia is tightly regulated to protect consumers from unmanageable debt. The key regulatory framework is the National Consumer Credit Protection Act 2009 (NCCP), which sets out rules lenders must follow when approving credit products.

ASIC’s Oversight

The Australian Securities and Investments Commission (ASIC) enforces responsible lending obligations. Lenders must ensure that any credit product, including the proposed credit limit, is “not unsuitable” for the consumer.

ASIC’s guidelines require lenders to:

• Verify income and expenses before approving credit.
• Ensure the customer can repay the limit within three years, even if they only make minimum repayments.
• Refuse applications where the limit would cause financial hardship.

This assessment is particularly important for credit cards. Since 2019, ASIC has made it mandatory for banks to check whether applicants can repay the entire approved limit in a reasonable timeframe.

Key Consumer Protections

Under Australia’s Key Consumer Protections, lenders are prohibited from offering unsolicited credit limit increases, meaning they cannot raise your limit without your explicit request.

Consumers also have the right to request a copy of their suitability assessment, free of charge, for up to seven years after the application, allowing them to review the decision-making process behind their approved limit.

Additionally, lenders are required to provide clear and transparent disclosures regarding all applicable fees, interest rates, and repayment obligations before you commit to a credit product.

Together, these protections aim to reduce over-indebtedness and give Australians greater control over their borrowing decisions.

How to Change (Increase or Decrease) Your Credit Limit

There may be times when you want to adjust your credit limit, either increasing it for flexibility or decreasing it to control spending.

If you believe you can manage a higher limit, you must formally request it. Lenders cannot automatically raise your limit due to ASIC restrictions.

Steps to request an increase:

1. Log in to your banking app or online portal.

2. Submit a request specifying your desired limit.

3. Provide proof of income and update your financial details.

4. Wait for the lender’s affordability assessment.

For example, ANZ, NAB, and Commonwealth Bank all allow online requests but require updated income documentation before approval.

If you want to manage spending more carefully, you can request a lower credit limit at any time. This is often recommended for people trying to reduce their debt exposure or improve their credit utilisation ratio.

Benefits of reducing your limit:

• Easier control over monthly repayments

• Lower risk of overspending

• Positive impact on long-term financial health

Banks can refuse a request to increase your credit limit if they determine that approving it could lead to financial hardship. This decision is usually based on factors such as having high existing debts, an irregular or insufficient income, or a negative credit history that indicates a higher risk of defaulting on repayments.

Why Credit Limits Matter: Impacts on Your Finances

Your credit limit influences far more than just how much you can spend—it affects your credit score, loan approvals, and financial health.

Credit bureaus in Australia calculate your credit utilisation—the percentage of available credit you’re using. A lower utilisation ratio generally improves your credit score.

Example:

• Credit limit: AUD 10,000

• Balance: AUD 2,500

• Utilisation = 25% (healthy range: below 30%)

Using most or all of your credit limit regularly can negatively impact your score and reduce your borrowing capacity for future loans, such as home or car financing.

A higher credit limit can offer several advantages, such as providing greater financial flexibility during emergencies, allowing for longer interest-free periods on purchases, and giving access to rewards programs and travel perks that many premium cards offer.

However, it also comes with potential risks. A larger limit can create a temptation to overspend, lead to higher minimum repayments, and, if not managed responsibly, result in increased debt accumulation that can negatively affect your financial stability.

Differences Between Revolving Credit and Fixed Loans

To fully understand credit limits, it’s important to distinguish between revolving credit and fixed loans, as each works differently.