With ever-rising house prices, affordability is the wall most buyers hit: the home you want costs more than a lender will let you borrow. Most lenders restrict borrowing to around 4.5 times your sole or joint income, but that multiple is not fixed, it's not the same at every lender, and there are several legitimate ways to raise the amount you're offered. Here are the ones that make a real difference.
1. Use a boosted income-multiple scheme (up to 6× income)
A small number of lenders will go well past 4.5× for first-time buyers who qualify. The best-known is Nationwide's Helping Hand mortgage, which lends eligible employed first-time buyers up to six times income, around a third more than standard lending.
The difference is dramatic. A couple earning £50,000 between them could borrow up to £300,000 at 6×, compared with roughly £225,000 at the standard 4.5×. That's £75,000 of extra buying power on the same income.
The main conditions (updated July 2026): employed applicants only, self-employed income isn't accepted; minimum income £30,000 for sole applicants or £50,000 joint; selected 5 or 10-year fixed rates; available up to 95% loan-to-value. Full details on our Helping Hand guide.
2. Pick the right lender, multiples vary more than you'd think
The 4.5× figure is a rule of thumb, not a law. Some lenders stop at 4.49×, others stretch to 5× or 5.5× for higher earners or certain professions (doctors, dentists, solicitors, accountants and similar often qualify for enhanced multiples). Two lenders can look at the same application and offer amounts tens of thousands of pounds apart, which is exactly why whole-of-market advice pays for itself at this stage.
3. Clear or reduce your credit commitments
Lenders don't just multiply your income, they run affordability calculations on what's left after your outgoings. Car finance, personal loans, credit card balances and buy-now-pay-later plans all directly shrink what you can borrow. Clearing a £300-a-month car payment before you apply can add far more than £300 to the picture: it can raise your maximum loan by tens of thousands.
4. Apply jointly
Two incomes nearly always beat one. Applying with a partner raises the income being multiplied, and joint applicants can unlock schemes with joint minimum-income thresholds. Just remember both credit histories come under the microscope, one weak file can drag the whole application.
5. Consider a joint borrower, sole proprietor (JBSP) arrangement
Some lenders let a family member, often a parent, add their income to your application without being named on the property deeds. Their income boosts what you can borrow; you remain the sole owner. These arrangements have real legal and tax implications for everyone involved, so they need proper advice, but for the right family they're a powerful tool.
6. Extend the mortgage term
A longer term lowers the monthly payment, which can help you pass a lender's affordability tests and increase the loan they'll approve. The trade-off is real: you'll pay interest for longer, so the total cost over the life of the mortgage rises. It's a lever to use deliberately, not a free win, and you can usually shorten the term or overpay later as your income grows.
7. Tidy your credit file before you apply
A stronger credit profile widens your choice of lenders, including the ones with the more generous multiples. Get on the electoral roll, correct any errors, avoid new credit in the months before applying, and keep card balances low. Here's how to check your credit report for free before a lender does.
8. Make sure every pound of income counts
Lenders treat overtime, bonuses, commission, shift allowances and second jobs very differently, some count 100% of regular bonus income, others half, others none at all. If a chunk of your earnings is variable, the lender you choose can change your maximum loan dramatically. The same goes for benefits and maintenance income. Matching your income shape to the right lender's criteria is one of the quickest ways to a bigger mortgage.
What about a bigger deposit?
A bigger deposit doesn't usually raise the income multiple itself, but it lowers your loan-to-value, which unlocks better rates and more lenders, and cheaper monthly payments feed straight back into affordability calculations. If family can help, a gifted deposit is often simpler than a joint application; see our gifted deposit guide.
Where to start
Before you fall for a property, get an Agreement in Principle so you know your real budget, and get it through a whole-of-market broker, so the figure reflects the most generous lender you qualify for rather than the first one you tried.
Your home may be repossessed if you do not keep up repayments on your mortgage.