Complex income:
Overseas workers
Overseas income can arise in several different ways. An applicant may live in the UK while working remotely for an overseas company, commute regularly between countries, work offshore on rotation or spend much of the year at sea.
These arrangements are often grouped together as “expat employment”, but that can obscure an important distinction.
For the purposes of this page, an overseas worker remains primarily UK-based or has an internationally mobile working pattern without establishing their main home permanently abroad. Someone whose home, family and day-to-day life are based overseas is more likely to be treated as an expatriate.
See [Mortgages for expatriates] for applications principally shaped by overseas residence, UK connections and the intended use of a UK property.
Working for an overseas employer
An applicant may live in the UK while employed remotely by a company incorporated abroad. Salary might be paid into a UK account, received overseas or converted into sterling through a payment service.
The lender may consider:
Where the employer is incorporated and operates
Whether it has a UK subsidiary or payroll presence
Which country’s employment law governs the contract
Whether the applicant is permanent, fixed-term or contracted
How long they have worked for the employer
Where the applicant works and pays tax
The currency and frequency of payment
Whether the role can continue from the UK
Probation and termination provisions
A UK-based applicant working for an established international employer can sometimes be assessed similarly to someone in conventional employment. The lender may nevertheless require additional information about the employer, contractual arrangement and UK tax treatment.
International commuters
International commuters retain their main home in one country while travelling regularly to work in another. They can include weekly commuters, airline crew, consultants, senior executives and employees dividing their time between international offices.
The lender needs to establish that the arrangement is sustainable. Travel, accommodation and duplicated living costs can materially affect affordability.
Useful evidence may include:
An employment contract confirming the working location
Evidence of an established commuting pattern
Employer-provided accommodation
Contractual travel or accommodation allowances
Evidence of personally funded expenses
Tax documents from the relevant jurisdictions
Confirmation that remote or hybrid working is permitted
An allowance is not automatically treated as income. Some lenders use contractual allowances in full, while others exclude them or use them only to offset the corresponding expense.
Seafarers and maritime workers
Seafarers can combine UK residence, international employment and long periods outside the country. They may work for UK or overseas shipping companies, receive sterling or foreign-currency income and follow defined patterns of voyages and leave.
Their tax documents can also appear unusual. A qualifying seafarer may claim Seafarers’ Earnings Deduction, reducing the UK tax payable on overseas earnings. A low tax liability should not therefore be mistaken for low income.
The lender may require:
Payslips and bank statements
Employment contracts
Discharge books
Tax calculations
Voyage or rotation history
Confirmation of paid and unpaid leave
It will usually need to establish whether the applicant receives a continuous annual salary or is paid only while at sea.
Offshore and rotational workers
Offshore workers may be based on oil and gas platforms, wind farms, research vessels or other installations. Working patterns such as two weeks on and two weeks off are common.
Some are permanent employees receiving a regular salary throughout both working and rest periods. Others work under renewable contracts or receive a day rate only while deployed.
The lender may assess:
Length and continuity of the current contract
Previous contracts within the same industry
Number of paid working days
Whether leave and rest periods are paid
Overtime, offshore and hazard allowances
Gaps between assignments
Location of the installation and employer
Currency of payment
Where earnings vary, lenders may average income rather than annualising the most recent high-earning rotation.
Residence and temporary accommodation
An overseas worker may spend considerable time abroad without becoming an expat for mortgage purposes.
Someone who retains a UK family home and uses accommodation supplied by their employer may be treated differently from someone who rents or owns a permanent overseas residence. The lender may ask where the applicant’s family lives, how often they return and whether the overseas arrangement is temporary or open-ended.
The answer can determine whether ordinary UK, foreign-income or expat products apply.
Foreign-currency income
When income is received in another currency but the mortgage is in sterling, exchange-rate movements create additional risk.
Lenders commonly address this by applying a haircut to the converted income. Earnings currently worth £100,000 might, for example, be treated as £80,000 after a 20% reduction. Another lender might use the lowest exchange rate recorded over a specified period.
Some currencies are widely accepted, while others have a very limited lender market.
Our [Foreign currency checker] provides an indication of which currencies lenders may consider and the reductions that can apply.
Presenting the complete working arrangement
Overseas employment cannot always be understood from payslips and tax calculations alone. The working pattern, contractual structure, residence, expenses and currency arrangements often determine whether the income is sustainable and how much can be used.
Our How lenders assess expat and overseas mortgage applications, Common pitfalls and Expat and overseas worker mortgages checklist pages provide further guidance.
An experienced specialist mortgage broker can add the context that connects the documents: how the applicant works, where they live, who pays them and why the arrangement is likely to continue. Matching that position with the right lender can make the difference between an automatic decline and an achievable mortgage solution.
Frequently asked questions.
Every client and every mortgage is different, but there are some questions we are asked regularly.
From affordability and deposits to complex income, expat mortgages and specialist property finance, our FAQs explain how different lenders may approach different circumstances.
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