It sounds simple enough, “We lend up to 5x your income.” But as Santander’s latest market update made clear, these catchy marketing lines can be misleading. In this bite sized blog, we will explore larger income multiple borrowing and what it actually means to people looking for a new mortgage.
The Reality Behind the 5x Income Mortgage Headline
Yes, some lenders will offer loans of 5x, 5.5x, or even 6x income, but these cases are the exception rather than the rule. The higher multiples typically apply only if:
- You’re a first-time buyer
- You earn above a certain income threshold
- You have a strong deposit (low loan-to-value ratio)
- You’re employed (not self-employed)
For everyone else, the lending multiple is often closer to 4x–4.5x income.
Regulatory Limits on 5x Income and Other High Lending
From July 2025, the Financial Policy Committee (FPC) confirmed new rules allowing banks to lend over 4.5x income, but only within strict limits.
The total flow of these “high multiple” loans must stay below 15% of a lender’s overall lending. In practice, that means around 85% of borrowers will still receive offers below 4.5x income.
Why It Matters
Borrowers who rely on headline figures may find themselves disappointed when their real offer falls short.
Working with an adviser helps set realistic expectations and ensures you apply to lenders most likely to offer the maximum available amount for your circumstances.
Speak to a Mortgage Adviser
Investing in the property market has always been and continues to be a great way to invest your money and build your wealth. If you are looking to purchase a property and need to discuss your mortgage options, please feel free to contact our team of mortgage experts at Oportfolio Mortgages, today.


















