£300k Salary Mortgage UK: How Much Can You Borrow?

If you earn £300,000 a year, you’re in a strong position when it comes to getting a mortgage, but it’s not always straightforward. High-income borrowers often face more complex lending criteria, especially if income includes bonuses, dividends, or multiple streams. This is especially true for those searching how much mortgage can I get on a £300k salary in the UK, where lender criteria can vary significantly.

In this guide, we break down:

• How much you can borrow on a £300k salary
• Which lenders are best for high earners
• How to maximise your borrowing
• Common mistakes to avoid

If you’re earning £300k and want to understand your borrowing potential, we can usually give you a clear answer quickly based on real lender criteria.

Quick answer

On a £300,000 salary, most borrowers can typically borrow between £1.35 million and £2.1 million+ depending on lender, deposit, and income structure.

How Much Mortgage Can You Get on a £300k Salary?

Most lenders in the UK will offer between:

• 4.5x to 5.5x your income as standard
• Up to 6x – 7x income with specialist or private banks

Typical Borrowing Range:

• £1.35 million (4.5x)
• £1.65 million (5.5x)
• £1.8m–£2.1m+ (6 – 7x, specialist lenders)

Your exact borrowing depends on:

• Bonus structure
• Deposit size
• Existing debts
• Credit profile

Which Lenders Offer Large Mortgages for High Earners?

High street lenders can be restrictive for high earners, particularly if your income isn’t straightforward.

Specialist lenders and private banks are often better suited, especially if you:

• Receive large bonuses
• Are self-employed
• Have complex income structures

These lenders can:

• Offer higher income multiples
• Take a more flexible view of affordability
• Structure lending around your financial profile

Income Structure Matters More Than Salary

A £300k “salary” can mean very different things to lenders.

Employed (Base + Bonus)

• Some lenders cap bonus income
• Others average bonuses over 2–3 years
• Self-Employed / Business Owners
  Based on:
• Salary + dividends
• Net profit (some lenders)

High Net Worth (HNW) Clients

If you meet HNW criteria, lenders may:

• Use bespoke underwriting
• Focus more on assets and overall wealth

Example Scenarios

Scenario 1: Employed Banker

• £150k base + £150k bonus
• Borrowing: ~£1.5m–£1.9m

Scenario 2: Business Owner

• £300k net profit
• Borrowing: £1.35m – £2m+ (depending on lender)

How to Maximise Your Borrowing

If you want to push towards the upper end (6 – 7x income), you should:

• Work with a specialist mortgage broker
• Present income correctly (especially bonuses/dividends)
• Reduce short-term liabilities
• Consider lenders outside the high street

Common Mistakes High Earners Make

• Assuming all lenders treat income the same
• Using a standard broker with limited lender access
• Not structuring income efficiently before applying
• Focusing only on rates, not borrowing potential

Do You Need a Specialist Mortgage Broker?

If you’re earning £300k+, the difference between lenders can mean hundreds of thousands in borrowing difference.

A specialist broker can:

• Access private banks and niche lenders
• Structure your application correctly
• Maximise borrowing while keeping rates competitive

Speak to a High-Income Mortgage Specialist

If you’re earning £300k and want to understand your options, speak to an expert mortgage broker today. We specialise in high earners, complex income, and large mortgage requirements. If you’re unsure how much you could borrow, see our large mortgage UK guide.

FAQ: £300k Salary Mortgage UK: How Much Can You Borrow?