Branch or subsidiary: how should a UK company expand overseas?
It is the first structural decision when you go abroad, and the one that quietly sets your tax bill for years. Here is how a foreign branch and an overseas subsidiary really differ, and which tends to suit what.
Short answer: a branch is part of your existing UK company operating in another country, so its profits are taxed in the UK and in that country (with relief for the double charge). A subsidiary is a separate company, taxed where it is resident, with profits coming back to you as dividends. Branches are often simpler and useful when the overseas operation is small or loss-making early on; subsidiaries usually win once it is profitable, sizeable, or you want to ring-fence risk. Which is right depends on the numbers and your plans, but choosing blind is the expensive mistake.
What a branch actually is
A branch, in tax terms, a permanent establishment, is not a separate company. It is your UK company carrying on business in another country through a fixed place or a person acting for it there. Because it is still your company, the UK taxes those profits as part of the company's worldwide profits. The overseas country taxes them too, because the activity happens on its soil, so the same profit is taxed twice, and you claim relief (usually a credit for the foreign tax) to stop it being taxed in full in both.
What a subsidiary actually is
A subsidiary is a separate legal company, incorporated and resident in the other country. The UK does not tax its profits as they arise (unless anti-avoidance rules such as the Controlled Foreign Companies rules apply). Instead, profits reach you when the subsidiary pays a dividend to the UK parent, and those dividends are often exempt from UK corporation tax, though the overseas country may withhold tax on the way out.
The trade-offs that actually decide it
- Early losses. New overseas operations often lose money before they make it. Branch losses can usually be set against your UK profits; losses inside a subsidiary are trapped there. That makes a branch attractive at the start.
- Once it is profitable. A UK company can elect for the foreign branch (permanent establishment) exemption, taking foreign branch profits out of UK tax altogether. But the election is irrevocable, and once it is made you can no longer use foreign losses in the UK, so the timing matters. A subsidiary gives cleaner separation without that one-way door.
- Risk and credibility. A local subsidiary ring-fences liability and often reads as more committed to local customers, staff and regulators.
- Admin. A branch typically means UK filing plus overseas registration; a subsidiary means a full second set of accounts and its own local compliance.
A branch to get going and absorb early losses, then a subsidiary once it is clearly profitable, is a well-worn path, but switching later is not free, so model it before you commit.
Don't forget CFC and transfer pricing
Go the subsidiary route and two things follow you: the Controlled Foreign Companies rules can pull some profits back into UK tax, and any charges between you and the subsidiary, management fees, royalties, loans, must be at arm's length and, above certain sizes, documented. That is transfer pricing, and it is easy to get wrong when you set the structure up in a hurry.
So which should you choose?
There is no default answer, it turns on whether you expect early losses, how much risk you want to ring-fence, the scale you are heading for, and the tax rules in the destination country. The one wrong move is picking without doing the sums. A short Overseas Expansion Diagnostic surfaces the branch-versus-subsidiary decision for your situation before you register anything. If a move is on the horizon, book a call and we will map it with you.