A Guide for Foreign-Owned UK Companies
Foreign parent companies often provide funding to their UK subsidiaries through intercompany loans.
This can be an efficient way for an international group to finance a UK operation, whether the money is needed for working capital, expansion, acquisitions, equipment or general business activities.
However, an intercompany loan between a foreign parent and a UK subsidiary can create important UK tax, transfer pricing and withholding tax considerations.
The UK subsidiary needs to consider whether the loan terms are commercially appropriate, whether the interest rate is consistent with the arm’s-length principle, whether the borrowing is adequately supported by documentation and whether UK withholding tax applies when interest is paid to the overseas parent.
This guide explains the main UK considerations for intercompany loans between overseas parents and UK subsidiaries.
Can a Foreign Parent Lend Money to a UK Subsidiary?
Yes. A foreign parent can generally provide funding to its UK subsidiary through an intercompany loan.
The arrangement should clearly establish:
- The lender
- The borrower
- The amount of the loan
- The currency
- The interest rate
- The repayment terms
- The maturity date
- Any security
- The purpose of the funding
For example:
US Parent → Intercompany Loan → UK Subsidiary
The UK company records the borrowing as a liability and, where interest is payable, records the corresponding finance cost.
However, the fact that the companies belong to the same group does not mean that the loan can be structured on any terms the group chooses.
The commercial terms should be considered under the relevant UK tax and transfer pricing rules.
Why Does the Interest Rate Matter?
The interest rate on an intercompany loan can affect the taxable profit of the UK subsidiary.
For example, if the UK company pays interest to its overseas parent, the interest expense may reduce its accounting profit and potentially its taxable profit, subject to the applicable UK rules.
This makes the interest rate an important transfer pricing consideration.
The question is broadly:
What interest rate and loan terms would independent parties have agreed in comparable circumstances?
Factors that may be relevant include:
- Amount borrowed
- Currency
- Loan maturity
- Creditworthiness of the UK borrower
- Security
- Purpose of the loan
- Existing debt
- Financial position of the borrower
- Market conditions
- Repayment terms
HMRC guidance confirms that the arm’s-length principle applies to the lending and borrowing of money between associated enterprises.
An arbitrary interest rate may therefore be difficult to support.
Transfer Pricing for Intercompany Loans
UK transfer pricing rules can apply to loans between connected companies.
The analysis is not limited to the interest rate.
It may also consider:
- Whether an independent lender would have made the loan at all
- How much an independent lender would have been willing to lend
- The appropriate interest rate
- The term of the loan
- Repayment conditions
- Security
- Other contractual terms
HMRC’s thin capitalisation guidance specifically considers whether the loan would have been made, the amount that would have been available and the interest rate and other terms that independent parties would have agreed.
This means that simply documenting a large loan and applying an interest rate does not necessarily resolve the transfer pricing question.
What Is Thin Capitalisation?
Thin capitalisation occurs where a company has a relatively high level of debt compared with the amount of funding that an independent lender might reasonably have provided.
For a UK subsidiary funded heavily by its foreign parent, the group may need to consider whether the level of borrowing is commercially supportable.
For example:
Overseas Parent → Large Intercompany Loan → UK Subsidiary
If the UK company has limited assets, limited trading history and relatively low expected cash flows, an independent lender may not necessarily have provided the same amount of debt on the same terms.
This can create transfer pricing and interest deduction issues.
The relevant analysis considers the circumstances of the borrower and what independent parties would have agreed.
Is Interest on an Intercompany Loan Tax Deductible?
Interest paid by a UK company on an intercompany loan may be deductible for UK Corporation Tax purposes, but the deduction is subject to the applicable UK tax rules.
Important considerations can include:
- Whether the borrowing is for a qualifying business purpose
- Transfer pricing
- The amount of debt
- The interest rate
- Corporate interest restriction rules
- Loan relationship rules
- Any applicable anti-avoidance provisions
The accounting treatment of interest does not automatically determine the amount that will be deductible for UK tax purposes.
For larger groups, the Corporate Interest Restriction rules may also need to be considered where the group’s net interest and financing costs exceed the relevant thresholds.
Therefore, an intercompany loan should ideally be reviewed as part of the UK subsidiary’s wider corporation tax position.
UK Withholding Tax on Interest Paid Overseas
One of the most important considerations for a UK subsidiary paying interest to a foreign parent is UK withholding tax.
Where yearly interest arising in the UK is paid to an overseas recipient, the UK payer may generally be required to deduct income tax at the basic rate and account for it to HMRC, subject to applicable exemptions, reliefs and treaty provisions.
In practical terms:
UK Subsidiary → Interest → Foreign Parent
The UK company should not automatically assume that the interest can be paid in full without deduction.
The first step is to determine whether UK withholding tax applies and then establish whether a reduced rate or exemption is available.
Can a UK Subsidiary Pay Interest to Its Foreign Parent Gross?
Potentially, but this depends on the circumstances.
The UK has entered into double taxation agreements with many countries. A relevant treaty may provide for a reduced rate of UK withholding tax or, in some circumstances, an exemption.
However, treaty relief is not automatically available simply because the lender is resident in a treaty country.
The relevant treaty conditions and HMRC procedures need to be considered.
HMRC guidance confirms that overseas companies may apply for relief from UK withholding tax on interest where the relevant double taxation agreement provides for relief.
Depending on the circumstances, relief may allow the UK company to pay interest without deduction or at a reduced rate.
The group should therefore establish the withholding tax position before making interest payments, rather than correcting the issue afterwards.
What Happens If Withholding Tax Is Not Considered?
A common mistake is for a UK subsidiary to calculate the interest due to its foreign parent and simply transfer the full amount.
If UK withholding tax should have been deducted, the UK company may have an additional liability to HMRC.
This can create:
- Additional tax liabilities
- Interest
- Compliance work
- Potential penalties
- Reconciliation problems between the UK company and its parent
HMRC specifically highlights the risk of failures to deduct tax from overseas interest payments.
The withholding tax analysis should therefore be completed before interest is paid.
Intercompany Loan Agreement
A formal loan agreement is an important part of documenting the funding arrangement.
The agreement should normally specify:
- Lender and borrower
- Principal amount
- Currency
- Interest rate
- Interest payment dates
- Maturity date
- Repayment terms
- Default provisions
- Security, where applicable
- Purpose of the loan
- Any amendments or refinancing provisions
The agreement should reflect what actually happens in practice.
For example, if the agreement states that the loan is repayable within one year but the balance remains outstanding indefinitely, the group should consider whether the documentation still accurately reflects the commercial arrangement.
How Should the Interest Rate Be Supported?
There is no single interest rate that applies to all intercompany loans.
The appropriate rate depends on the specific characteristics of the financing.
The group may consider factors such as:
Creditworthiness
What would an independent lender expect from a borrower with similar financial characteristics?
Currency
Loans denominated in GBP, USD or EUR may have different market conditions.
Term
A short-term working capital facility may have different pricing from a long-term loan.
Security
The existence and nature of security may affect the terms that an independent lender would agree.
Subordination
A subordinated or otherwise less-protected loan may carry different pricing from senior debt.
Purpose
Funding for an established profitable business may differ from financing for a newly established subsidiary.
The supporting analysis should be appropriate to the size and complexity of the loan.
What Documentation Should Be Kept?
A UK subsidiary should maintain appropriate records supporting its intercompany funding.
These may include:
- Signed loan agreement
- Board approvals
- Funding calculations
- Interest calculations
- Repayment schedules
- Bank records
- Transfer pricing analysis
- Credit assessment
- Evidence supporting the interest rate
- Withholding tax analysis
- Treaty relief documentation, where applicable
- Reconciliations of the intercompany balance
For significant loans, the documentation should clearly explain why the amount, interest rate and other terms are commercially supportable.
Common Mistakes With Intercompany Loans
1. No formal loan agreement
The parent transfers money to the UK subsidiary but there is no documentation establishing whether the funding is debt or equity.
2. Arbitrary interest rate
The group selects an interest rate without considering the borrower’s circumstances or market conditions.
3. No transfer pricing analysis
The loan is treated as an internal group transaction without reviewing the applicable transfer pricing rules.
4. Excessive borrowing
The UK subsidiary carries more debt than an independent lender might reasonably have provided.
5. Withholding tax is overlooked
The UK company pays interest to the overseas parent without reviewing the UK withholding tax position.
6. Interest is calculated incorrectly
Interest is posted using the wrong rate, currency, period or opening balance.
7. Loan agreement does not match reality
The documented terms are materially different from how the funding operates in practice.
8. Intercompany balances are not reconciled
The UK company’s loan balance does not agree with the parent company’s records.
Practical Example: Foreign Parent Funding a UK Subsidiary
An overseas parent establishes a UK subsidiary and provides funding to support its operations.
The parent provides an intercompany loan.
Before the UK subsidiary starts paying interest, the group should consider:
Loan: What is the amount and purpose of the funding?
Terms: Would an independent lender have agreed to similar terms?
Interest: How has the interest rate been determined?
Transfer pricing: Does the loan comply with the applicable UK transfer pricing requirements?
Debt capacity: Is the level of borrowing commercially supportable?
Withholding tax: Does UK withholding tax apply to the interest payments?
Treaty relief: Is the foreign parent entitled to reduced or nil withholding under an applicable treaty?
Documentation: Are the loan agreement and supporting calculations available?
This review can prevent significant tax and compliance issues later.
Year-End Intercompany Loan Checklist
Before the UK subsidiary’s year-end, review:
- Loan agreement is in place
- Loan balance agrees with the parent
- Interest rate has been reviewed
- Interest calculation is correct
- Transfer pricing has been considered
- Thin capitalisation has been considered where relevant
- Corporate Interest Restriction has been considered where relevant
- Withholding tax position has been reviewed
- Treaty relief documentation is available where applicable
- Interest payments have been correctly recorded
- Foreign exchange movements have been reconciled
Frequently Asked Questions
Can a foreign parent lend money to its UK subsidiary?
Yes. Foreign parents commonly fund UK subsidiaries through intercompany loans. The loan should be properly documented and the terms should be reviewed under the applicable UK tax and transfer pricing rules.
Is interest paid to a foreign parent subject to UK withholding tax?
Potentially. UK rules can require tax to be deducted from certain yearly interest payments made to overseas recipients. The applicable double taxation agreement or other relief may reduce or eliminate the withholding requirement where the relevant conditions are satisfied.
Can a UK subsidiary pay interest to its foreign parent without withholding tax?
Potentially, depending on the lender’s country of residence, the applicable treaty and whether the required relief or clearance conditions have been met.
What interest rate should an intercompany loan have?
There is no universal rate. The rate should be considered based on the characteristics of the loan and what independent parties would reasonably have agreed.
Are intercompany loans subject to transfer pricing?
They can be. Transfer pricing can apply to both the amount of funding and the terms of the loan, including the interest rate.
What is thin capitalisation?
Thin capitalisation refers broadly to situations where a company has more debt than an independent lender might reasonably have provided in the circumstances. It can be relevant when a UK subsidiary is heavily funded by an overseas parent.
Is intercompany loan interest tax deductible?
It may be, subject to the applicable UK Corporation Tax, transfer pricing, loan relationship and interest restriction rules.
Does an intercompany loan need a written agreement?
A written agreement is strongly recommended, particularly for significant or long-term funding. It provides evidence of the commercial terms and supports the accounting and tax treatment.
Conclusion
Funding a UK subsidiary through an intercompany loan can be an effective way for an international group to finance its UK operations.
However, the arrangement should be reviewed from several perspectives:
- Loan terms
- Interest rate
- Transfer pricing
- Thin capitalisation
- Corporation Tax
- Withholding tax
- Double taxation treaty relief
- Documentation
- Accounting and reconciliation
One of the most important issues for foreign-owned UK companies is to consider withholding tax before interest is paid to the overseas parent.
A properly documented loan, supported interest rate and clear withholding tax analysis can help the UK subsidiary manage its funding arrangements and reduce the risk of unexpected UK tax liabilities.
How FKGB Accounting Can Help
FKGB Accounting works with foreign-owned UK companies and international groups on UK accounting, Corporation Tax, VAT, intercompany transactions and financial reporting.
We can help UK subsidiaries manage intercompany funding arrangements, including loan accounting, interest calculations, reconciliations, withholding tax considerations and coordination with overseas parent companies.
To discuss your UK operations, book a meeting through our online calendar or contact us by email for a confidential consultation: David.levy@fkgb.co.uk
