Offshore companies, without the mystery
People go offshore for six reasons. Two of them are sensible for a small business, three are about paperwork rather than tax, and one is a crime. Here is the honest version, and how it compares to a UK company.
Yearly cost of an offshore setup
2,000 to 15,000
Registered agent, local director, accounts, cross border advice
US penalty for one missed form
10,000
Form 5471, per form, per year, before any tax
Countries swapping bank data
100 plus
Automatic exchange of account information
The short answer
An offshore company does not make your tax disappear. Your own country taxes you on where you live and where the business is really run from. For most people earning in one country and living in that same country, an offshore company adds cost and paperwork and saves nothing. It earns its keep when the business genuinely operates across borders, or when outside investors need a neutral place to hold shares.
Why people actually do it
Each reason, and the catch nobody mentions.
A lower headline company tax rate
Some places charge little or no corporate tax. That is the reason most people have heard of.
One holding place for investors from many countries
Funds and startups often use a neutral country so investors from a dozen places can all hold the same share class.
Privacy from competitors and the general public
Some registers show less to the public than Companies House does.
Holding assets used in more than one country
Ships, aircraft, patents and licensing income are often held in one place because the asset itself moves between countries.
Deferring tax on profits kept in the business
If profit stays offshore and is genuinely earned offshore, tax at home can be delayed.
Hiding money
This is the reason people whisper about.
Offshore versus a plain UK company
Same business, two structures, side by side. UK figures are the 2025/26 rates the planner uses.
| What you are comparing | Offshore company | UK limited company |
|---|---|---|
| Company tax on trading profit | Often zero locally, but usually taxed at home anyway once CFC rules apply | 25 percent main rate, 19 percent under 50,000 of profit, with marginal relief between |
| Getting money into your pocket | Dividends from abroad are still taxed in your own country when you receive them | Salary and dividends taxed once, with a known rate and a known form |
| Yearly cost | Roughly 2,000 to 15,000 for registered agent, local director, accounts and cross border advice | Roughly 800 to 2,500 for accounts, corporation tax return and payroll |
| Banking | Slow. Many banks refuse accounts for offshore entities with no local activity | Straightforward business account |
| Paperwork if you get it wrong | Multiple disclosure forms, penalties per form per year, and enquiries that run for years | One company return, one personal return |
| Selling the business later | Buyers and their lawyers often discount the price or demand restructuring first | Clean structure, Business Asset Disposal Relief may apply |
The rules that catch people, country by country
United Kingdom
- A company managed and controlled from the UK is UK tax resident wherever it is registered, so UK corporation tax applies.
- Controlled foreign company rules can charge UK tax on profit sitting in a low tax subsidiary.
- The transfer of assets abroad rules can tax an individual on income moved offshore.
- Failure to correct offshore tax carries penalties of up to 200 percent of the tax.
United States
- US citizens and green card holders file on worldwide income wherever they live.
- Controlled foreign corporation rules, Subpart F and GILTI tax offshore profit as it arises.
- Form 5471 reports a foreign corporation, Form 8938 and FinCEN Form 114 report foreign accounts.
- Failure to file Form 5471 starts at a 10,000 dollar penalty per form per year, before any tax.
Australia
- Residency is decided by where you actually live and work, not by where a company is registered.
- Controlled foreign company rules attribute offshore income to Australian owners.
- Transferor trust rules apply to money put into a foreign trust.
- Foreign income and interests are declared on your return; the ATO already receives bank data from partner countries.
If you are still considering it
- 1Write down the real reason. If the answer is only a lower rate, stop and read the anti-avoidance rules first.
- 2Work out where the business is actually run from. That is where the tax usually lands.
- 3Price the yearly cost honestly, including a local director and cross border advice.
- 4Compare it with the plain option: a company at home, plus pension and allowance planning.
- 5If it still stacks up, use a cross border tax adviser and disclose everything from day one.
Where we draw the line
We help with structures that are declared and defensible. We do not help anyone hide income, hide ownership or mislead a tax authority. Failing to declare offshore income is a criminal matter in the UK, the US and Australia, and the penalties are larger than the tax that was avoided.
The cheaper thing to try first
Before anyone forms a company abroad, run the plain moves through the planner. Pensions, allowances and choosing between sole trader and company usually beat an offshore setup once you count its yearly cost.