Borrowers often focus on cutting coffee or streaming subscriptions before an application, but the major serviceability constraints are usually structural. A large credit-card limit, car finance, an existing mortgage, HELP debt or high committed household expenses can have far more impact than minor discretionary spending.
- Credit-card limits can matter more than balances
- Existing mortgages are commonly assessed at stressed rates
- Car and personal-loan repayments directly reduce surplus income
- Dependants and committed expenses matter
- The best improvement strategy targets the real servicing constraint
Revolving credit can be expensive in servicing
Lenders generally assess credit cards based on the approved limit, not just the current balance. A card with a zero balance can therefore still reduce borrowing capacity.
Reducing unnecessary limits before an assessment can help, but do not close facilities blindly if they are genuinely needed for business or cash-flow management.
Existing loans are stressed too
Your current mortgage repayment may be manageable at today’s rate, but a lender can assess that loan at a higher test rate when calculating capacity for the next loan. This is one reason investors with several properties can hit a servicing ceiling even when their real-world cash flow still looks comfortable.
Car loans and personal loans also matter because their monthly repayments are deducted from available income.
Household profile matters
Dependants, childcare, school fees, maintenance payments, private health costs and rent can all be significant. Lenders may use the higher of declared living expenses and their benchmark methodology.
Improving borrowing capacity is therefore about understanding which commitment is actually binding rather than simply cutting every expense.
Frequently asked questions
Does cancelling a credit card improve capacity?
It can, especially where the card has a high limit, but the exact impact varies by lender.
Will paying off a car loan help?
Often yes, because removing a recurring repayment can increase the monthly surplus available for the home loan.
Do lenders use my actual living expenses?
They consider declared expenses and may compare them with their own benchmark or minimum assumptions.