In most cases, you’ll need a salary of around £120,000–£150,000+ to secure a £600k mortgage in the UK, depending on your deposit size, income structure, and lender affordability rules. Below, we break down realistic salary scenarios, lender calculations and London examples so you can see what’s achievable, and how to maximise your borrowing power.
At Oportfolio Mortgages, we assess affordability across high-street and specialist lenders, so the figures below reflect real lender criteria rather than generic online calculators.
What this guide will show you
- Typical salary needed for a £600k mortgage
- How lender income multiples actually work
- Why deposit size makes a big difference
- Real London buyer examples
- Practical ways to improve affordability
£600k Mortgage Salary Calculator (Typical UK Lender Multiples)
Most lenders start with an income multiple (often around 4.0–4.5× income), then apply a full affordability assessment.
Here’s the typical guide:
| Income multiple (rule-of-thumb) | Approx salary needed (single or joint household income) | ||||
|---|---|---|---|---|---|
| 4.0x | £150,000 | ||||
| 4.5x | £133,333 | ||||
| 5.0x | £120,000 | ||||
| 5.5x | £109,100 | ||||
| 6.0x | £100,000 |
Quick answer:
Most borrowers need between £120,000–£150,000 household income for a £600k mortgage. Some lenders may offer higher income multiples for strong applications, but affordability rules still apply.
Not sure if £600k is realistic for you?
Affordability isn’t just about salary, deposit size, credit profile and monthly commitments all play a role. We can usually tell you in 5 minutes whether £600k is realistic based on real lender criteria. Check My Affordability.
Why the income multiple is only a starting point
Higher income multiples (5–6× income) exist, but they are:
- Criteria-driven
- Often reserved for high earners or professionals
- Dependent on low outgoings and strong credit
Lenders are also limited in how many high loan-to-income cases they can approve, so lender choice becomes increasingly important at this level.
What “£600k mortgage” actually means
When people search this, they usually mean a £600,000 loan amount, not the property price.
Examples:
- Property £700,000 with £100,000 deposit → £600,000 mortgage
- Property £750,000 with £150,000 deposit → £600,000 mortgage
Deposit size (Loan-to-Value or LTV) affects:
- Interest rates
- Monthly repayments
- Affordability stress testing
At £600k borrowing, many lenders prefer deposits of 10–20%+.
How lenders assess affordability for £600k mortgages
At this level, lenders move beyond simple salary multiples and focus heavily on affordability.
Income assessment
Lenders consider:
- Basic salary
- Bonus and commission (often partially counted)
- Self-employed income averages
- Contractor income models
- Multiple income sources
Outgoings and commitments
Even high earners can be restricted by:
- Car finance or loans
- Credit card balances
- Childcare or school fees
- Existing property commitments
- Lifestyle spending patterns
Stress testing
Lenders assess whether you could still afford repayments if interest rates rise, meaning borrowing limits can vary significantly between lenders.
London buyer examples
Higher loan sizes are common for London buyers due to property prices.
Example A: Joint professional applicants
- Mortgage: £600,000
- Household income: £140,000
- Income multiple: 4.3x
Outcome: Often achievable with strong deposit and moderate outgoings.
Example B: Single high earner
- Mortgage: £600,000
- Income: £150,000
- Income multiple: 4.0x
Outcome: Usually possible, but affordability can tighten if there are dependants or high monthly commitments.
Practical ways to reduce the salary needed
If you’re close to qualifying, these are usually the biggest levers:
- Increase your deposit
- Reduce existing credit commitments
- Extend mortgage term (where suitable)
- Optimise bonus or variable income presentation
- Use specialist lenders with flexible affordability models
- Apply jointly where possible
Choosing the right lender first time becomes increasingly important at higher borrowing levels.
Common misconception
Many online calculators assume affordability is purely based on income multiples. In reality, lenders use detailed affordability models, which is why two applicants earning the same salary can receive very different borrowing limits.
Monthly repayments on a £600k mortgage
Repayments vary depending on rate and term, but typical ranges are:
- Approximately £2,600–£3,400 per month
Your exact repayment depends on:
- Interest rate
- Deposit size
- Mortgage term
- Repayment vs interest-only structure
Next step: Turn the estimate into a real answer
A salary guide gives you a starting point, but lender criteria decide the real outcome.
If you want to know whether £600k is realistic for you, book a quick affordability review with Oportfolio Mortgages.
We’ll match your profile against real lender criteria and give you a clear next-step plan. Book Your Affordability Review.
Looking at a different mortgage amount?
- £300k salary mortgage guide
- £400k salary mortgage guide
- £500k salary mortgage guide
- £700k salary mortgage guide
- £800k salary mortgage guide
- £900k salary mortgage guide
- £1 million salary mortgage guide
- £2 million salary mortgage guide
FAQs
1. What salary do I need for a £600k mortgage in the UK?
Most borrowers need around £120,000–£150,000 household income, depending on deposit size and affordability factors.
2. Can I get a £600k mortgage on £100k salary?
It may be possible with certain lenders, but usually requires a strong deposit, low outgoings or specialist lender criteria.
3. How much deposit do I need for a £600k mortgage?
Deposits typically range from 5% (£30,000) to 20%+ (£120,000+). Larger deposits usually improve approval chances and rates.
4. Can two people combine salaries for a £600k mortgage?
Yes. Joint applications combine income and often make larger borrowing more achievable.
5. Do lenders only use income multiples?
No. Lenders run full affordability checks including stress testing, living costs and credit commitments.
6. Is a £600k mortgage common in London?
Yes. Many London buyers require larger mortgages due to higher property prices.
7. Can I get a £600k mortgage if self-employed?
Yes. Most lenders require 1–2 years of accounts or tax returns and assess average declared income.
8. Should I speak to a mortgage broker before applying?
Yes. A broker can identify lenders most likely to approve higher borrowing and help avoid declined applications.
Not sure where you sit? We can usually tell you in 5 minutes whether £300k is realistic based on your income and deposit, book a quick affordability call.
