Will Closing My Credit Card Before Applying Actually Increase My Borrowing Power?
A $10,000 credit limit — fully unused — can reduce your borrowing capacity by $50,000 to $80,000. Closing it before you apply changes that calculation immediately.
Yes — in many cases significantly. Closing a credit card before applying removes a liability that lenders count against you, even if the balance is zero.
Why an Unused Card Reduces Your Borrowing Power
Lenders assess credit cards at their limit, not their balance. They treat the full limit as a potential monthly commitment, calculated at approximately 3% of the limit per month. A $10,000 limit is treated as generating roughly $300 per month in repayments — even if you’ve never used it.
The Numbers in Practice
The following figures are approximate estimates based on common lender assessment methods; actual outcomes vary depending on the lender and individual circumstances.
- $10,000 credit limit: reduces borrowing capacity by approximately $50,000–$80,000
- $20,000 across two cards: reduces capacity by approximately $100,000–$150,000
- $30,000 across three cards: the reduction can exceed $200,000
Should I Close Before or After I Apply?
Before. Closing a card removes it from the lender’s assessment of your commitments. The closure typically registers on your credit file within 30–60 days, so timing matters — ideally close cards at least 60 days before submitting your application.
What Closing a Card Doesn’t Do
Closing a credit card doesn’t remove the history of having it from your credit report. The account history remains, which is fine. What’s removed is the ongoing limit commitment that was reducing your capacity.
You may wish to speak with a licensed mortgage broker to assess your personal circumstances.
This is general information only. The impact of closing credit cards on borrowing capacity varies by lender. Speak with a licensed mortgage broker before making changes ahead of an application. All loans are subject to lender approval.
Sources: APRA Prudential Practice Guide APG 223; ASIC MoneySmart, Managing Credit 2025; RBA, Household Debt Report 2024.
