When someone starts a business in the Principality, the choice between trading as a sole trader and incorporating a company is often reduced to tax rates. That is a reasonable place to begin and an incomplete place to finish.
Whether the choice proves right usually depends on three other questions: who carries the risk, how much administration the structure creates, and what happens if someone else joins later.
Who bears the risk?
This is the fundamental difference—and the one most often ignored until it matters. As a sole trader, there is no separation between personal and business assets. A company has separate legal personality.
That does not make a company an absolute shield—directors can still incur personal liability—but the separation exists and can be documented.
How much administration does each generate?
| Sole trader | Company | |
|---|---|---|
| Set-up | Activity registration | Incorporation, registration, and articles of association |
| Accounting | Activity records at the level required | Full accounts under the Andorran chart of accounts |
| Annual accounts | No company annual accounts to file | Preparation, approval, and filing with the relevant registry |
| Governing bodies | None | Directors and documented shareholder resolutions |
| Ending the structure | Deregister the activity | Dissolution and liquidation |
Registre de Societats Mercantils Govern d'Andorra — Registre de Societats Mercantils
The practical reading is simple: every company has a minimum administrative burden, however small the activity. If turnover is low and growth is unlikely, that recurring burden needs a clear justification.
Contributions and coverage
Legal form and the individual’s circumstances determine whether CASS contributions are due and under which regime. Contribution bases and amounts cannot be compared until the specific case has been validated.
Caixa Andorrana de Seguretat Social (CASS) Caixa Andorrana de Seguretat Social
This is often the most poorly estimated cost because the contribution does not depend only on profit. Ask for the figure that applies to your circumstances before deciding, not afterwards.
What happens if someone else comes in?
This question resolves many borderline cases. A personally carried-on activity has no shares or corporate decision-making body. Its assets, contracts or business can be transferred, but there are no shares in a non-existent legal entity to sell.
- A co-owner needs a structure that documents their ownership.
- An investor wants to buy something that legally exists and has accounts.
- A future sale may be structured as a transfer of the business or its assets, or as a share sale where a company exists; the scope and consequences differ.
If none of these scenarios is foreseeable, they should not drive the choice. If one is realistic, it may matter more than the difference in tax rate.
A practical way to decide
- 01Estimate the fixed annual cost of each optionInclude the annualised incorporation cost, accounting fees, annual-accounts filing, and social-security contributions. This is what can make a small company expensive.
- 02Put a value on the riskAsk what would happen if a client made a claim for more than your entire turnover this year.
- 03Look two years ahead, not fiveIncorporating later is possible and common. Planning for a company that may not exist makes you pay today for something hypothetical.
- 04Take the figures to an adviserWith the three previous answers written, this conversation lasts half an hour instead of three.
The right legal form is the one that lets you sleep at night without costing more than the value it creates.