Using Bonus or Overtime Income for a Mortgage: How Do Lenders View It?
- Oct 10, 2025
- 8 min read
Updated: Jun 17
Find out how much of your bonus and overtime income a lender will count, and how to get the most of it into your mortgage.
Quick Answer
Yes, bonus and overtime income can usually be used for a mortgage, but how much counts depends on how regular and well-evidenced it is. Guaranteed overtime is often taken in full, while irregular bonuses may be counted at 50 percent or less. Lenders average your variable pay and want at least one to two years of payslips and P60s.
Reviewed by Ben Stephenson, FCA authorised (FRN 496907) · 25+ years’ experience · 4.9★ on Google. Updated: 17 June 2026.
Who Is This Guide For
Best for employed buyers and homeowners whose pay includes overtime, bonuses, or commission, especially anyone who feels a lender has undercounted their real income and wants to know how to evidence it and which lenders are most flexible.
Key Points
Guaranteed overtime is often counted in full
Irregular bonuses may count at 50% or less
Lenders average your variable pay over time
Table of Contents
What is bonus or overtime income?
Bonus income refers to performance-related or contractual payments, usually paid annually or quarterly.
Overtime income is extra pay for working hours beyond contracted limits. Both fall under variable income, as they are not guaranteed in the same way as base salary.
Related reading: Can Side Hustle Income Really Boost First-Time Buyer Affordability?
Why variable income matters more now
With living costs high, a large share of UK employees rely on overtime or bonuses to top up their pay, so an affordability assessment that ignores variable income often understates what someone can really afford.
Specialist lenders increasingly recognise this, although their criteria remain strict.
Related reading: Who Are Specialist Mortgages Really For?
How UK mortgage affordability is calculated
Lenders must follow the FCA’s responsible lending framework.
Affordability checks look at:
Gross annual income (base plus accepted variable pay)
Debt-to-income ratio
Household outgoings
Stress tests to model interest rate rises
For applicants with overtime or bonus pay, underwriters often average income across 3, 6, or 12 months.
Related reading: How Many Years of Credit History Do You Really Need for a Mortgage?
How lenders average your variable income
Most lenders do not simply take your best month. For overtime they usually average the last three, six, or twelve months, and for bonuses often the last two years, then count a percentage of that average on top of your base salary. The point of averaging is to estimate what you can reliably expect to keep earning, so the shape of your history matters as much as the total: a steady or gently rising pattern reads well, while a recent dip, a long gap, or a single large spike all pull the usable figure down. Once that averaged, discounted figure is added to your salary it goes through the same stress test as the rest of your income. Strong income still has to survive the rest of your file, including the bank statement red flags lenders watch for.
Do lenders accept overtime income?
Yes. Guaranteed overtime written into a contract is usually fully counted.
Regular overtime that shows up across multiple payslips is often partly counted, commonly between 50 and 100 percent depending on how consistent it looks. Truly irregular overtime, a busy month here and there, is usually discounted heavily or capped at around 50 percent. The key is a visible, repeating pattern rather than the odd spike.
Do lenders accept bonus income?
Yes, but with caveats.
Bonuses are harder to evidence because they’re not always regular. The more your bonus looks like a dependable, recurring part of your package rather than a surprise, the more of it a lender will tend to use.
Most lenders want at least a two-year history of bonus payments to consider them reliable.
Annual one-off bonuses are rarely counted in full; many lenders average the last two years and then use a portion of that figure. A bonus that has grown steadily is treated more kindly than one that jumps around or has recently fallen, because lenders are really trying to gauge what you can reliably expect to earn again.
Bonus vs overtime: which is easier to use?
Although both are variable, lenders tend to treat overtime more generously than bonuses. Guaranteed or contractual overtime is the strongest case, as it is written into your terms and behaves almost like salary, so many lenders count it in full. Regular non-contractual overtime comes next, usually counted in part once there is a clear, repeating pattern across payslips. Bonuses sit a little lower, because they are often discretionary and tied to company or personal performance that can change from year to year. That does not mean bonuses are ignored, but lenders generally want a longer track record, commonly two years, and will use a portion of the average rather than the headline figure. If your pay is a mix, it helps to know which part is doing the heavy lifting, since presenting the more reliable element clearly can change the amount you are offered.
What if your variable income has dropped recently?
Lenders care most about income you can reasonably expect to keep, so a recent fall in overtime or a smaller bonus this year will get attention. Where that happens, an underwriter may use the lower recent figure, or average it down, which reduces how much you can borrow. It is rarely a dead end. A larger deposit and a lower loan-to-value reduce the lender's risk and can offset a softer income picture, and some specialist lenders take a longer or more flexible view of the pattern. A short, honest explanation also helps, for example a change of role or a quieter period for the business. The value of speaking to a broker first is that they can pinpoint which lenders weigh a recent reduction least heavily, so you apply to the right one rather than collecting declines that leave marks on your file.
How much of your bonus or overtime is usually counted?
As a rough guide, here is how different types of variable pay tend to be treated:
Type of variable income | How much lenders typically count |
Guaranteed / contractual overtime | Often 100%, treated almost like salary |
Regular non-contractual overtime | Commonly 50 to 100% if the pattern is consistent |
Regular bonus (2+ year history) | Often 50 to 100% of the two-year average |
Irregular or one-off bonus | Frequently 0 to 50%, sometimes excluded |
The lender acceptance spectrum explained
Think of lenders on a spectrum:
Conservative lenders: Count only base salary
Mainstream lenders: Count part of regular bonus/overtime
Specialist intermediary lenders: More flexible if evidence is strong
Policy exceptions: when criteria may be waived
Some lenders may make exceptions if compensating factors exist, such as:
Large deposit reducing risk
Low loan-to-value
Strong credit profile
Stable employer in a growth sector
Case study: Overtime turning the tide for borrowing power
One Bristol-based client earned £34,000 base with £10,000 overtime annually. Initial calculations ignored overtime, limiting their mortgage size. By presenting 18 months of payslips, a broker secured a lender willing to include 75% of overtime, boosting borrowing power by £40,000.
Buy-to-let and investor considerations
For buy-to-let, rental income is the primary driver.
However, top-slicing means lenders may use personal income to cover affordability shortfalls. Here, overtime and bonuses may make the difference between an approval and a rejection.
What surveyors and underwriters really look for
Consistency across payslips
Evidence on P60s and tax records
Employer confirmation if needed
Avoidance of one-off spikes
Pros and cons of relying on bonus or overtime income
Pros
Higher borrowing capacity
More realistic reflection of true income
Cons
Greater scrutiny and longer processing times
Risk if overtime or bonuses reduce in future
Common mistakes applicants make
Assuming all variable income counts
Not keeping payslips
Relying on one-off annual bonuses
Applying direct without understanding criteria
Impact on mortgage timescales
Expect longer underwriting times if variable income is central to your application. More documentation requests and employer checks can delay approvals. Building in a few extra weeks, and having your payslips and P60s ready up front, keeps things moving and reduces the risk of a product offer expiring before you complete.
Hidden costs people forget when using variable income
Higher valuation fees if multiple valuations required
Extra solicitor queries if income is disputed
Delays leading to expired product offers
Market trends: what’s changed in the last 12 months
Over the past couple of years, more applicants have relied on variable income as inflation has squeezed fixed pay.
Specialist lenders are increasingly used, as high street banks remain more cautious.
Expert tips and broker insights
Always supply at least 3–6 months’ payslips, preferably 24 months for bonuses
Keep P60s for proof of historical earnings
Avoid gaps in overtime evidence
Use a broker who knows which lenders accept variable pay
FAQs
Q: Do all lenders treat overtime the same?
No, it varies widely.
Q: Can annual bonuses be used?
Sometimes, but usually not in full.
Q: What proof do I need?
Payslips, P60s, and employer letters.
Q: Does this apply for remortgages?
Yes, same principles.
Q: Are specialist lenders more flexible?
Often, but not always.
Glossary of key terms
Variable income: Income not guaranteed each month
Underwriting: Risk assessment process
Top-slicing: Using personal income to support rental affordability
Checklist: Questions to ask before applying
How much of my overtime will you count?
Do I need two years’ bonus history?
Which documents do you need?
How long will it take to assess?
Which lenders are flexible with my income type?
Conclusion & next steps
Bonus and overtime income can strengthen a mortgage application if consistent, provable, and well-documented. But the way it’s treated varies hugely across the lender spectrum. The effort of evidencing it well is almost always worth it, since it can be the difference between the home you want and one you have to settle for.
A broker bridges this gap, knowing where flexibility exists and how to present an application.
Updated 17 June 2026.
Written by Ben Stephenson, CeMAP-qualified mortgage broker at Manor Mortgages Direct.
Manor Mortgages Direct is FCA authorised (FRN 496907), established for nearly 30 years and rated 4.9★ on Google. Based in Bristol, we help clients across the UK make the most of bonus, overtime and other variable income. Call 01275 399299.
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