Buying a home is one of the biggest financial decisions you will make. When applying for a mortgage in the UK, one common question is whether bonuses and overtime income can be included as part of your earnings.
The answer is that bonuses and overtime can potentially count towards a mortgage. However, the amount a lender accepts will depend on how regular, consistent and sustainable the additional income appears to be.
Understanding how UK mortgage lenders assess bonuses and overtime could affect how much you may be able to borrow and your chances of securing a suitable mortgage.
In this guide, we explain:
- How lenders assess income for a mortgage
- Whether bonuses can count towards mortgage affordability
- Whether overtime can be included in your mortgage application
- What evidence lenders may request
- How different mortgage types treat additional income
- How to prepare your application
How Do Mortgage Lenders Assess Income?
When you apply for a UK mortgage, the lender needs to establish whether you can afford the monthly repayments.
Your regular basic salary will normally form the starting point of the lender’s affordability assessment. The lender will also examine your financial commitments, regular spending and credit history.
Your assessment may include:
- Your basic annual salary
- Regular bonuses
- Overtime payments
- Commission or other additional earnings
- Existing loans and credit commitments
- Household bills and regular expenditure
- The size of your mortgage deposit
- Your employment status and job security
Additional earnings such as bonuses and overtime may also be considered, depending on factors including:
- The type of employment contract you have
- How regularly the additional income is paid
- How long you have received the income
- Whether the earnings are expected to continue
- Whether the payments are clearly documented
Mortgage lenders have different affordability rules. One lender may accept most of your additional income, while another may only accept a percentage of it.
Bonuses and Overtime at a Glance
| Income type | Can it count towards a mortgage? | Typical income history | Common evidence | How it may be assessed |
|---|---|---|---|---|
| Basic salary | Usually | Current employment | Payslips, P60 and employment contract | Normally included as the main income |
| Annual bonus | Potentially | Around 2–3 years | Payslips, P60s and employer confirmation | An average or percentage may be used |
| Quarterly bonus | Potentially | Around 2–3 years | Recent payslips and P60s | Regular payments may strengthen the application |
| Regular overtime | Potentially | Around 1–2 years | Payslips, P60s and employment details | Some or all may be accepted |
| Irregular overtime | Sometimes | Depends on the lender | Payslips showing payment history | The lender may use a reduced amount or exclude it |
| One-off bonus | Less likely | Limited history | Payslip or employer letter | May not be treated as sustainable income |
The exact approach will depend on the lender’s current criteria and your wider financial circumstances.
Can Bonuses Count Towards a Mortgage?
What Is a Bonus?
A bonus is an additional payment made by an employer on top of an employee’s basic salary.
It may be linked to:
- Individual performance
- Sales targets
- Company profits
- Team performance
- Annual business results
- Contractual employment benefits
Bonuses may be paid monthly, quarterly, annually or on an irregular basis.
Do Mortgage Lenders Accept Bonuses?
Many UK mortgage lenders will consider bonus income where it appears to be regular, sustainable and likely to continue.
A lender may be more willing to include your bonus when it is:
- Paid regularly
- Received over the previous two to three years
- Clearly shown on your payslips or P60s
- Supported by your employment contract
- Expected to continue in the future
- Consistent rather than changing significantly each year
Lenders may calculate an average of the bonuses received during the previous two or three years. Some lenders may use the latest figure, while others may only accept a percentage of your bonus income.
Mortgage Bonus Income Example
Sarah works as a sales manager and earns a basic salary of £30,000 per year.
She has also received the following annual bonuses:
- Year one: £3,500
- Year two: £4,000
- Year three: £3,800
The lender calculates the average bonus:
£3,500 + £4,000 + £3,800 = £11,300
£11,300 ÷ 3 = £3,767
If the lender accepts the full average bonus, Sarah’s assessed annual income could be:
£30,000 basic salary + £3,767 average bonus = £33,767
This does not automatically mean every lender will assess her income in the same way. Some lenders may use a smaller proportion of the bonus.
Can Overtime Count Towards a Mortgage?
What Is Overtime Income?
Overtime is additional pay received for working beyond your normal contracted hours.
Some employees regularly work overtime as part of their role. For others, overtime may only be available during busy periods or when extra cover is required.
Overtime can be:
- Guaranteed under an employment contract
- Regular but not contractually guaranteed
- Seasonal
- Voluntary
- Irregular or dependent on workload
The more stable and predictable the overtime appears, the more likely it may be considered during a mortgage affordability assessment.
Do Mortgage Lenders Accept Overtime?
Many lenders may include overtime income when it has been received consistently and is expected to continue.
A lender may look for overtime that is:
- Paid regularly
- Received for at least 12 months and sometimes two years
- Clearly shown on your payslips and P60s
- Supported by your employment history
- Expected to remain available
- Not dependent on a temporary increase in workload
If your overtime varies significantly, the lender may calculate an average. It may also accept only a percentage of the overtime rather than the full amount.
Where overtime is irregular or has only recently started, a lender may decide not to include it.
Mortgage Overtime Income Example
David is an engineer earning a basic annual salary of £28,000.
He regularly works approximately eight hours of overtime each week and has earned around £6,000 per year in overtime during the previous two years.
If the lender believes the overtime is stable and likely to continue, David’s assessed annual income could be:
£28,000 basic salary + £6,000 overtime = £34,000
However, another lender may use only part of the £6,000 or calculate an average based on David’s payslips.
What Documents Will Mortgage Lenders Request?
Good documentation can make it easier for a lender to understand your full income.
You may be asked to provide:
- Your latest three to six months of payslips
- Your latest P60
- P60s covering previous tax years
- Personal bank statements
- Your employment contract
- A letter from your employer
- Evidence of previous bonus payments
- Evidence of regular overtime payments
- Details of your job role and employment status
An employer’s letter may be useful when it confirms that bonuses or overtime are a regular part of your earnings and are expected to continue.
However, documentation requirements vary between mortgage lenders.
Why Consistency Matters
Mortgage lenders want to know whether your income is sustainable throughout the mortgage term.
A single large bonus may improve your finances temporarily, but it may not demonstrate that you can rely on the same amount every year.
Similarly, a few months of increased overtime may not be enough if the extra hours were caused by a temporary staffing shortage or unusually high workload.
A longer and more consistent payment history may help demonstrate that the income forms a normal part of your earnings.
Lenders may consider:
- Whether the payments have increased or decreased
- How often you receive them
- Whether payments appear on every payslip
- Whether the income is guaranteed
- Whether your employer expects it to continue
- Whether you have recently changed jobs
- Whether the income is seasonal
Does Guaranteed Overtime Make a Difference?
Guaranteed overtime may be viewed more favourably because it forms part of your contractual employment terms.
Where overtime is guaranteed, the lender may request your employment contract or confirmation from your employer.
Non-guaranteed overtime can still potentially count. However, the lender may require a stronger history of regular payments before including it in the affordability calculation.
Can a New Bonus or Overtime Arrangement Be Included?
Recently introduced bonuses or overtime may be more difficult to include because there is limited evidence showing that the income is sustainable.
A lender may be cautious where:
- You have only received one bonus
- Overtime started within the last few months
- You recently changed employer
- Your employment is still within a probationary period
- The additional work is temporary
- The payments vary considerably
This does not necessarily mean that you cannot get a mortgage. Your basic salary and wider financial position may still support your application.
A mortgage adviser can review which lenders may be more suitable for applicants with a shorter income history.
Bonuses and Overtime for Residential Mortgages
For a residential mortgage, lenders normally assess your personal income and expenditure carefully.
Bonuses and overtime may support your application where the income is:
- Regular
- Documented
- Sustainable
- Likely to continue
- Supported by an established employment history
Including additional income may improve the affordability calculation, but the lender will still consider your debts, household spending, credit history and deposit.
Bonuses and Overtime for Buy-to-Let Mortgages
For a Buy-to-Let mortgage, the lender’s main focus is usually whether the expected rental income can cover the mortgage payments.
However, your personal income may still be relevant.
Some Buy-to-Let lenders require applicants to earn a minimum personal income. Others may examine your personal affordability where the expected rent does not meet the lender’s standard rental coverage calculation.
In these situations, accepted bonus or overtime income could help support the application.
Buy-to-Let lending criteria vary, and not all Buy-to-Let mortgages are regulated in the same way as residential mortgages.
Does the Mortgage Rate Type Affect How Income Is Assessed?
The assessment of your bonuses and overtime will not normally depend on whether you choose a fixed-rate or variable-rate mortgage.
These terms describe how the mortgage interest rate works.
Fixed-Rate Mortgage
With a fixed-rate mortgage, the interest rate remains unchanged for an agreed period. This can provide more predictable monthly repayments during the fixed term.
Variable-Rate Mortgage
With a variable-rate mortgage, the interest rate and monthly repayments may change.
Before offering either type, the lender will assess your income, expenditure, credit history and ability to afford the mortgage.
The lender may also test whether you could afford the repayments if interest rates or your monthly costs increased.
Practical Tips for Including Bonuses and Overtime
1. Keep Detailed Income Records
Retain evidence of your additional earnings, including:
- Payslips
- P60s
- Bank statements
- Employment contracts
- Bonus statements
- Employer letters
Clear records can help demonstrate that your income is genuine, regular and sustainable.
2. Avoid Assuming Every Lender Uses the Same Calculation
Lender policies differ significantly.
One lender may accept the full average of your overtime or bonus income. Another may accept 50%, use the lowest annual figure or exclude it entirely.
Researching lender criteria before applying may reduce the risk of approaching an unsuitable lender.
3. Be Realistic About Variable Income
Do not base your property budget on the assumption that every pound of additional income will be accepted.
A more cautious estimate can help you avoid committing to a property before understanding your actual borrowing position.
4. Consider Your Employment Security
A permanent role, established employment record or contract confirming guaranteed payments may strengthen your application.
A lender may ask additional questions if you are:
- On a temporary contract
- Working through an agency
- In a probationary period
- Employed on a zero-hours contract
- Starting a new job
- Receiving irregular payments
5. Check Your Payslips Carefully
Ensure your bonus and overtime payments are recorded correctly.
Your payslips should ideally make it clear which amounts relate to:
- Basic salary
- Overtime
- Commission
- Bonuses
- Allowances
- Expenses
Payments labelled as expenses may not be treated as income.
6. Speak to a Mortgage Adviser Before Applying
A mortgage adviser can compare how different lenders assess additional income.
This may be particularly useful when:
- Your bonus changes each year
- Your overtime is not guaranteed
- You have recently changed jobs
- You receive several types of additional income
- Your affordability depends heavily on extra earnings
- You have a complex employment arrangement
What If You Are Self-Employed or Paid Differently?
If your extra income forms part of your self-employed earnings, lenders may assess it differently.
Rather than relying only on payslips, a lender may request:
- Annual accounts
- SA302 tax calculations
- Tax year overviews
- Business bank statements
- Accountant’s references
- Evidence of ongoing contracts
- Recent trading figures
The lender may calculate your income using an average of your earnings over two or three years.
Some lenders may consider applicants with a shorter trading history, but the available options will depend on the strength of the application and the lender’s criteria.
Can Bonuses and Overtime Increase How Much You Can Borrow?
Accepted bonus or overtime income may increase the income figure used in the lender’s affordability assessment.
However, mortgage borrowing is not calculated using income alone.
The lender will also consider:
- Your deposit
- Credit commitments
- Monthly household expenditure
- Number of financial dependants
- Credit history
- Mortgage term
- Interest rate
- Property type
- Age and retirement plans
Therefore, including bonuses or overtime does not guarantee that you will be able to borrow a specific amount.
Common Questions About Bonuses, Overtime and Mortgages
Will a lender accept 100% of my bonus?
Some lenders may accept the full amount where the bonus is regular and well established. Others may only accept a percentage or use an average from previous years.
How many payslips will I need?
The lender may request three to six months of payslips. More evidence may be needed where overtime or bonuses vary throughout the year.
Can one annual bonus count?
A single annual bonus may be considered by some lenders, but a longer payment history will usually provide stronger evidence that the income is sustainable.
Does overtime have to be guaranteed?
Not always. Regular non-guaranteed overtime may still be accepted if your payslips demonstrate a consistent history.
Can commission count towards a mortgage?
Commission may also be considered as additional income. As with bonuses and overtime, the lender is likely to examine its consistency, payment history and likelihood of continuing.
Can bonuses help with a Buy-to-Let mortgage?
Potentially. Rental income is normally the main consideration, but your personal income may also be reviewed depending on the lender and application structure.
Summary
Bonuses and overtime can potentially count towards a UK mortgage if the additional earnings are regular, consistent and likely to continue.
Important points to remember include:
- Your basic salary will normally form the foundation of your affordability assessment.
- Lenders may consider bonus income received over the previous two to three years.
- Regular overtime received for at least 12 months or two years may be included.
- A lender may use an average or accept only a percentage of additional income.
- Payslips, P60s, bank statements and employment documents can support your application.
- Residential and Buy-to-Let lenders may assess additional income differently.
- Fixed or variable mortgage rates do not usually change how your earnings are verified.
- Each mortgage lender has its own affordability rules and lending criteria.
Stable and clearly documented earnings may improve the strength of your application, but acceptance will depend on your full financial circumstances.
Ready to Find Out How Your Income Affects Your Mortgage Options?
Unsure whether your bonuses or overtime could help support your mortgage application?
Contact BSL Financials for personalised guidance based on your income, employment arrangements and wider financial position.
Our team can help you understand how different lenders may assess your earnings and explore mortgage options suitable for your circumstances.
BSL Financials — Making mortgages simpler and clearer for you.
