07/09/2026
Your car finance is quietly reducing your mortgage offer. And most buyers have no idea until it is too late.
Mortgage affordability is not just about what you earn. It is about what you are committed to spending every month before you even get to a mortgage payment.
Lenders take your gross income, run it through their affordability model, and then subtract your committed outgoings. Car finance, credit card minimum payments, personal loans, buy-now-pay-later balances - all of it comes off before they work out what you can borrow.
The numbers are uncomfortable.
A £350 per month car finance payment - entirely normal for a mid-range family car on a P*P deal - can reduce your maximum borrowing by roughly £60,000 to £75,000 depending on the lender. Not because you are a bad borrower. Because that £350 a month is already spoken for.
A £200 per month credit card minimum payment adds another £35,000 or so off the top.
This is not a reason to panic. It is a reason to plan.
Some fixes are simple: if the car finance ends in the next 6-12 months, some lenders will exclude it from the calculation entirely. A credit card with a small balance can sometimes be cleared before application in a way that materially improves your offer. It depends on your full picture.
Knowing this before you start viewings means you are not hunting for a £350,000 home on a budget that actually stops at £280,000.
Sound familiar? Let's look at your numbers properly before you go any further - no fees, no pressure.
Call us on 03300 432428 or visit www.as-mortgages.co.uk