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Do UK Companies Pay Tax on Income Earned From Overseas Customers?

Ryan Patrick

• 11 min read
Do UK Companies Pay Tax on Income Earned From Overseas Customers?

Yes. A UK company can pay UK Corporation Tax on income earned from overseas customers. The fact that a customer is based in the United States, Canada, Nigeria, Australia, Germany or another country does not automatically make the income exempt from UK Corporation Tax. For a company that is UK resident for tax purposes, HMRC's general rule is that Corporation Tax applies to its chargeable profits on a worldwide basis. This means profits from overseas customers can form part of the company's UK Corporation Tax calculation.

However, there is an important distinction between Corporation Tax and other taxes. Selling to customers overseas can create separate VAT, withholding tax, permanent establishment or local tax considerations depending on the nature of the business and the countries involved. For international founders, understanding these distinctions is essential.

The Short Answer: Overseas Customers Do Not Automatically Mean Overseas Tax Only

Consider a UK limited company that provides software to customers in the United States. The company:

  • Is incorporated in the UK
  • Is UK tax resident
  • Has no UK customers
  • Has £200,000 of sales to US customers
  • Has £120,000 of allowable business expenses
  • Makes £80,000 of taxable profit

The company cannot generally exclude the £80,000 simply because its customers are American. If the company is UK resident, its worldwide chargeable profits are generally within the UK Corporation Tax regime. HMRC specifically states that a UK-resident company is chargeable to Corporation Tax on profits wherever they arise, whether or not those profits are received in or transferred to the UK. The location of the customer and the location of the company's tax residence are therefore two different questions.

Why Does the UK Tax Overseas Customer Income?

Corporation Tax is a tax on company profits, rather than simply a tax on money received from UK customers. HMRC's Corporation Tax guidance states that if a company is classed as UK resident for tax purposes, it pays Corporation Tax on its profits from the UK and abroad. Taxable profits can include trading profits, investment income and chargeable gains. This is particularly relevant to businesses that operate internationally from the UK, including:

  • SaaS companies
  • Software businesses
  • Digital agencies
  • Online consultants
  • Ecommerce businesses
  • Exporters
  • Subscription businesses
  • Freelance businesses operating through limited companies
  • Online education companies
  • International marketplaces

A UK company can have a completely international customer base and still have UK Corporation Tax obligations.

What Determines Whether a UK Company Pays Corporation Tax?

The starting point is tax residence. HMRC explains that UK company residence determines the scope of the Corporation Tax charge. A company that is UK resident is normally subject to Corporation Tax on its worldwide chargeable profits, subject to relief for double taxation.

For a UK-incorporated company, the incorporation rule will generally make the company UK tax resident, although specific exceptions and double taxation treaty provisions can change the analysis in particular circumstances. This means a founder should not ask only: "Where are my customers?" They should also ask: "Where is my company tax resident?" That second question can have a much greater impact on Corporation Tax.

Revenue Is Not the Same as Taxable Profit

Another common misunderstanding is assuming that a company pays Corporation Tax directly on every pound of overseas revenue. Corporation Tax is generally calculated on taxable profits, not simply gross sales. For example:

Overseas customer revenue: £300,000
Allowable business expenses: £210,000
Taxable profit: £90,000

The Corporation Tax calculation starts with the company's profits and then applies the relevant tax rules and adjustments. The fact that £300,000 came from customers outside the UK does not make the £90,000 profit foreign and therefore outside UK Corporation Tax.

Current UK Corporation Tax rates

For financial year 2026, the main Corporation Tax rate is 25% for profits above £250,000, while the small profits rate is 19% for profits at or below £50,000. Companies with profits between £50,000 and £250,000 may qualify for Marginal Relief. The thresholds can be affected by factors such as associated companies and short accounting periods. These rates apply to taxable profits, not simply the value of overseas sales.

What If 100% of the Company's Customers Are Overseas?

That is perfectly possible. A UK company could have:

  • 0 UK customers
  • 100 US customers
  • 30 Canadian customers
  • 20 Australian customers

and still be UK tax resident. For example, imagine GlobalCloud Ltd, a UK software company. Its customers are entirely outside the UK. It sells subscriptions through its website and collects payments through an online payment provider.

It has no UK customers and no physical UK sales team. If GlobalCloud Ltd is UK resident, its taxable profits from those overseas sales can generally be subject to UK Corporation Tax. This is one of the most important concepts for founders building international businesses through UK companies.

Does the Country of the Customer Matter?

Yes, but not necessarily for the basic Corporation Tax residence question. The customer's country can matter for other tax obligations. For example, the business may need to consider:

  • VAT or local sales taxes
  • Withholding taxes
  • Digital services taxes
  • Local corporate taxes
  • Permanent establishment rules
  • Customs and import duties
  • Local employment taxes
  • Double taxation agreements

So there are really two separate questions:

Question 1: Is the company's profit within UK Corporation Tax?

For a UK-resident company, generally yes.

Question 2: Does the overseas country also have a claim to tax something connected with the transaction or business?

Potentially. This distinction prevents one of the most common mistakes in international business planning.

Corporation Tax and VAT Are Not the Same Thing

A UK company's overseas sales can have one treatment for Corporation Tax and another for VAT. For Corporation Tax, a UK-resident company generally considers its worldwide taxable profits. VAT works differently. For services, the VAT treatment depends on factors such as whether the customer is a business or consumer, where the customer belongs, and the type of service supplied. HMRC's place-of-supply rules contain a general rule for B2B services under which the supply is generally treated as made where the business customer belongs, subject to exceptions. This means:

A sale can be included in UK Corporation Tax calculations without necessarily being subject to UK VAT.

For example, a UK consultancy supplying certain services to a business customer overseas may have no UK VAT to charge because the place of supply is outside the UK. However, the profit from that sale can still be relevant to UK Corporation Tax. Never use the VAT treatment of a sale as a shortcut for deciding its Corporation Tax treatment.

What About Digital Services and SaaS?

SaaS and digital businesses need to be particularly careful because cross-border tax rules can become complicated. A UK SaaS company might sell subscriptions to:

  • US businesses
  • EU consumers
  • Canadian companies
  • Nigerian businesses
  • Australian consumers

The Corporation Tax question is relatively straightforward if the company is UK resident: its taxable profits are generally within the UK Corporation Tax charge. VAT and indirect tax questions can be much more complex because different rules can apply depending on the customer type, service and jurisdiction.

HMRC specifically provides separate place-of-supply rules for services supplied to customers outside the UK, including special rules for electronically supplied services. The lesson is simple: do not treat "overseas sale" as a single tax category.

What If the Company Performs the Work Overseas?

This introduces a more advanced issue. A UK company can conduct a trade wholly abroad and still potentially be within the UK Corporation Tax regime. HMRC's guidance specifically states that where a company is chargeable in respect of a trade carried on wholly abroad, the income from that trade is computed under the normal trading income rules. The charge applies to income arising during the accounting period whether or not it is remitted to the UK. This can matter for remote businesses.

Example

A UK company provides consulting services. The founder lives in Nigeria, works from Nigeria and serves only Nigerian and US customers. The company has no UK customers and performs the actual consulting work outside the UK.

That does not automatically remove the company's profits from UK Corporation Tax if the company remains UK resident. However, the founder and company may also need to examine Nigerian tax rules and whether the overseas activity creates additional obligations.

Could the Company Also Pay Tax Overseas?

Potentially. A UK company earning money from overseas customers can encounter tax in another country depending on the structure and activities involved. For example, an overseas country might have rules concerning:

  • Corporate tax residence
  • Permanent establishments
  • Withholding tax
  • Local employees
  • Local agents
  • Branches
  • Local offices
  • Digital activities
  • Specific categories of income

The existence of an overseas customer by itself does not necessarily mean the UK company has created a taxable presence there. But substantial operations in that country can change the analysis.

What Is a Permanent Establishment?

A permanent establishment (PE) is broadly a taxable business presence in a jurisdiction. For example, an overseas operation involving a fixed place of business or certain dependent-agent arrangements can potentially create a PE under applicable domestic law or tax treaty rules.

This matters because a UK company might remain UK tax resident while also having a taxable presence in another country. The company could therefore face international tax obligations even though it is still paying UK Corporation Tax.

Customer location alone is not the test

Having a customer in France does not automatically mean a UK company has a French permanent establishment. Likewise, having customers in the United States does not automatically create a US permanent establishment. The company's actual activities, personnel, premises, agents and applicable local and treaty rules matter.

What If the Overseas Country Withholds Tax?

Another issue is withholding tax. Some countries impose tax at source when certain payments are made to foreign companies. Depending on the type of income and the relevant tax treaty, a UK company may have foreign tax deducted before receiving payment.

This can create a potential double-taxation issue. HMRC states that where a company has income from a source in one country and is resident in another, it may be liable to tax in both countries. The UK has negotiated double taxation agreements with more than 100 countries, and relief may be available depending on the relevant treaty and circumstances.

The exact relief depends on the type of income, the countries involved and the applicable treaty. Do not assume that foreign tax automatically disappears or that the UK simply ignores it.

Foreign Tax Credits and Double Taxation Relief

Suppose a UK company earns income connected with another country and foreign tax has already been paid. The company may potentially be entitled to relief against UK tax, depending on the circumstances. HMRC provides specific guidance on claiming double taxation relief for companies. The amount and method of relief depend on the applicable rules and treaty. The important principle is:

Being taxed abroad does not necessarily mean the same profit will be taxed twice without relief. But relief is not automatic in every situation, and the company needs to establish exactly what foreign tax was paid and what relief provisions apply.

What If the UK Company Has a Foreign Branch?

A UK company operating abroad may do so through a foreign branch or permanent establishment. HMRC states that profits of a UK-resident company carrying on a trade in the UK and abroad, or abroad only through foreign branches, will normally be charged to UK tax as trade income, with the relevant profits and losses considered in the Corporation Tax computation.

There is also a specific UK foreign permanent establishment exemption regime. Importantly, the rules are changing. HMRC announced in 2026 that, for most companies, the foreign PE exemption will become mandatory for accounting periods beginning on or after 1 January 2027, subject to the detailed transitional and anti-avoidance rules. This is a specialist area and should be reviewed carefully where a UK company is expanding through overseas branches or permanent establishments.

Overseas Customer vs Overseas Business Operation

This distinction is worth remembering.

Scenario A: Overseas customers only

A UK company has its management and business structure in the UK but sells exclusively to US customers.

Result: The overseas customer base does not generally prevent UK Corporation Tax from applying to the company's UK-resident profits.

Scenario B: Overseas customers and overseas employees

The company has employees working permanently in another country.

Result: UK Corporation Tax may still apply, but the overseas employment and business activities may create additional local tax obligations.

Scenario C: Overseas branch

The UK company establishes a branch in another country.

Result: Foreign PE and double-taxation rules may become relevant.

Scenario D: Overseas subsidiary

The UK parent establishes a separate company overseas.

Result: The subsidiary is generally a separate legal entity and has its own tax residence and tax obligations, while transactions between the companies can raise additional issues such as transfer pricing. The structure matters.

A Practical Checklist for UK Companies With Overseas Customers

If your UK company earns most or all of its revenue internationally, review these areas:

1. Confirm tax residence

Determine whether the company is UK resident and whether another country could also regard it as resident.

2. Calculate taxable profits

Do not confuse gross overseas revenue with taxable profit. Review:

  • Sales
  • Allowable expenses
  • Capital expenditure
  • Trading losses
  • Tax adjustments
  • Chargeable gains
  • Relevant reliefs

3. Review VAT separately

Determine the correct place of supply and VAT treatment for each major category of overseas sale. HMRC stresses that different services can have different place-of-supply rules.

4. Check for overseas taxable presence

Ask whether you have:

  • Employees abroad
  • A branch
  • An office
  • A dependent agent
  • Regular business operations overseas

5. Check withholding tax

Find out whether customers or foreign tax authorities deduct tax before paying your company.

6. Check the relevant tax treaty

If the same income may be taxed in two jurisdictions, examine the applicable double taxation agreement and domestic relief provisions.

7. Keep evidence

Maintain:

  • Customer contracts
  • Invoices
  • Customer locations
  • Tax identification details
  • Foreign tax certificates
  • Payment records
  • Employee locations
  • Branch or office records
  • Accounting records

Good documentation becomes particularly important when demonstrating why an overseas transaction was treated in a particular way.

Frequently Asked Questions

Do UK companies pay Corporation Tax on money received from foreign customers?

Generally, yes, if the company is UK resident. UK-resident companies are normally subject to Corporation Tax on their worldwide chargeable profits.

Does a UK company pay tax if it has no UK customers?

It can. Having no UK customers does not by itself remove a UK-resident company from Corporation Tax. The company's worldwide taxable profits can remain within the UK Corporation Tax charge.

Is foreign income exempt from UK Corporation Tax?

Not automatically. A UK-resident company is generally taxed on its worldwide chargeable profits. Specific exemptions, foreign PE rules and double taxation relief can affect particular types of income or overseas operations.

Do I charge UK VAT to overseas customers?

Not necessarily. VAT depends on the place-of-supply rules, the customer's status, the type of service or goods and other circumstances. Some supplies to overseas customers can fall outside UK VAT, while others remain subject to UK VAT or require registration in another country.

Can a UK company pay Corporation Tax and foreign tax on the same income?

Potentially. Where income is taxed in both jurisdictions, double taxation relief or foreign tax credit relief may be available depending on the circumstances and applicable treaty.

Does having customers abroad create a permanent establishment?

Not necessarily. Customer location alone does not generally determine whether a permanent establishment exists. The company's activities, personnel, premises, agents and applicable domestic and treaty rules need to be considered.

Does a UK company have to bring foreign income into the UK before Corporation Tax applies?

Generally no. HMRC states that a UK-resident company is chargeable to Corporation Tax on its profits wherever they arise, whether or not the profits are received in or transferred to the UK.

What if my company earns all its money outside the UK?

A UK-resident company can still be subject to UK Corporation Tax on its worldwide taxable profits. HMRC also recognises that a UK-resident company can carry on a trade wholly abroad and remain within the Corporation Tax rules.

Do I need professional advice if my UK company sells internationally?

Professional advice becomes particularly useful when the business has overseas employees, branches, permanent establishments, substantial foreign income, withholding tax or potential dual tax residence. International tax treatment is highly fact-specific.

Conclusion

Yes, UK companies can pay Corporation Tax on income earned from overseas customers. For a UK-resident company, the key principle is that Corporation Tax generally applies to worldwide chargeable profits, not simply money earned from UK customers. That means a UK SaaS company selling subscriptions to American businesses, a UK consultancy serving clients in Asia, or an ecommerce company selling exclusively to customers abroad can still have UK Corporation Tax obligations.

But Corporation Tax is only one part of the international tax picture. The customer's location can affect VAT and other indirect taxes. Overseas employees, branches and agents can create additional tax obligations. Foreign withholding tax may apply, and double taxation relief may be available where the same income is taxed in more than one country. For global founders, the practical rule is simple: Do not assume that overseas customers mean overseas-only tax. Determine the company's tax residence, calculate its worldwide taxable profits, then separately review VAT, foreign tax, permanent establishment and double-taxation rules.

That approach is particularly important when building and managing a UK company from abroad. Platforms such as IncorpUK can form part of the wider UK company administration infrastructure for global founders, but international tax treatment should always be assessed based on the company's actual activities, residence and cross-border structure.