Does Your Credit Card Limit Affect Your Personal Loan Application?

Yes — your credit card limit affects your personal loan application, whether you use the card or not. Lenders assess 3.5% of your total credit card limit as a monthly obligation, regardless of your actual balance. A $10,000 limit is treated as a $350/month commitment even if you've never spent a dollar on it.

Here's the bit that catches almost everyone out: it's not what you owe on your credit card that lenders count against you — it's the limit. A card sitting at $0, one you haven't touched in years, still shows up in a lender's numbers as if you could max it out tomorrow. If you're wondering why a card you never use is affecting how much you can borrow, this is why — and what you can do about it.

The short answer

Lenders don't ask what you're currently using. They ask what you *could* use — because you could, at any point, run that card up to its limit and then apply for a loan on top of it. That's the assumption baked into the formula, and it applies whether the card is maxed out, empty, or sitting in a drawer.

Key takeaway: A credit card's limit — not its balance — is what lenders assess. The rule is 3.5% of the total limit per month, applied identically whether the card is unused, partly used, or maxed out. This same figure is added into both your affordability check and your DTI (debt-to-income ratio).

How your credit card limit is actually assessed

`Affordability` — the lender's test of whether your income comfortably covers all your obligations plus the new loan repayment — treats every credit card the same way: 3.5% of the total limit, per month, regardless of balance or usage.

Definition — credit card obligation: The amount a lender assumes you're committed to each month for having a credit card open, calculated as 3.5% of the card's total limit. A $10,000 limit is assessed at $350/month. This applies whether you owe $10,000, $500, or nothing at all.

The same 3.5% figure also feeds into `DTI` (debt-to-income ratio) — the percentage of your gross income already committed to debt repayments before this loan is added. So a credit card limit does double duty: it drags down your affordability residual, and it inflates your DTI.

Why lenders do it this way: A credit limit is a standing offer of credit you can draw on whenever you like. Your balance today tells a lender nothing about your balance next month. Assessing the limit — not the balance — is how they protect against you drawing down the card right after settlement.

This is genuinely one of the most misunderstood parts of a loan application. People assume that because they've never used a card, or because they've just paid it off, it's a non-issue. It isn't. The limit is the number that matters.

A worked example

Take someone with:

• Net monthly income: $4,800
• 0 dependants → HEM: $1,700/month
• Rent: $1,650/month
• Existing car loan repayment: $350/month
• Proposed new personal loan repayment: $550/month (roughly $20,000 over 4 years)

With no credit cards: ``` $4,800 − $1,700 − $1,650 − $350 − $550 = $550 residual ``` Comfortably positive — this passes affordability with real room to spare.

Now add one credit card, $10,000 limit, never used: ``` $4,800 − $1,700 − $1,650 − $350 − $550 − $350 = $200 residual ``` Still positive, so it still passes — but the $350/month assessed against a card with a zero balance has already cut the margin in half.

Add a second card, also a $10,000 limit — combined limits now $20,000: ``` $4,800 − $1,700 − $1,650 − $350 − $550 − $700 = −$150 residual ``` Residual is negative. Affordability fails on this dimension, which puts the outcome in the Possible — lender dependent band — even though neither card has ever carried a balance.

That's the whole point of this article: two unused cards, sitting at $0, took this person from a comfortable pass to a failed affordability check. Nothing about their actual spending changed.

What lenders actually look at

An insider view of how this plays out in practice:

• Total limits, not total debt. A lender adds up every credit card limit on your file — not what you owe. Combining two or three cards you rarely use can be a bigger problem than one card you use regularly but keep well under its limit.
• It stacks with everything else. Credit card obligations sit alongside rent, existing loans, BNPL, and the proposed new repayment. A card that looks harmless on its own can be the thing that tips a tight application over the edge.
• DTI catches it too. Even if your affordability residual holds up, the same 3.5% figure adds to your DTI. If you're already close to the 50% DTI threshold from other debts, credit card limits can push you over it.
• Store cards and lines of credit count the same way. Any revolving credit facility — not just a traditional credit card — is assessed on its limit, not its balance.

How to improve your position

If a credit card limit is affecting your numbers, here's what actually moves the needle — and what doesn't.

1. Reduce the limit, not just the balance. Paying a card down to $0 changes nothing if the limit stays the same. Call your card provider and formally reduce the limit — most providers can do this in a few minutes, and it takes effect immediately.
2. Close cards you don't use. If you haven't used a card in the last 3–6 months, closing it removes its limit from the calculation entirely. Do this before applying, not after — lenders look at your position at the time of application.
3. Do the maths before you decide which card to cut. If you have several cards, closing the one with the highest limit has the biggest effect on both DTI and affordability, regardless of which one you use most.
4. Know the trade-off. Closing a long-standing card can have a mild, temporary effect on your Equifax score by shortening your average account age. For most people preparing to apply for a personal loan, the affordability benefit outweighs this. See Equifax Credit Score Australia Explained for more on how account closures interact with your score.
5. Run the numbers before you apply. The T2 Borrowing Capacity Calculator takes your total credit card limits as an input, alongside your income, rent, and other debts, and shows you exactly how much reducing a limit changes your safe borrowing amount.

Your credit card limit is one of the easiest things to overlook when you're preparing to apply — precisely because it doesn't feel like debt if you're not using the card. Lenders don't see it that way. Check your total limits before you apply, and if one is doing nothing for you, reducing or closing it is often the fastest way to free up borrowing capacity.