As a business grows, the question of whether to keep operating as a sole trader or take the leap into forming a company often comes up. The decision has implications for taxation, Social Security contributions, and personal liability that are worth understanding before deciding.
What a self-employed company director is
This is someone who registers with RETA (Spain's Special Scheme for Self-Employed Workers) due to their status as director or shareholder with a certain level of stake and control in a limited company, as opposed to the "classic" self-employed worker who operates directly as an individual, with no company in between.
The difference in personal liability
For many, this is the main reason to form a company: while a sole trader is liable for their business debts with all of their personal assets (except for certain partial protections for their primary residence under specific requirements), a limited liability company generally restricts liability to the assets contributed to the company, offering greater protection of the shareholder's personal assets against business debts.
Differences in taxation
- Sole trader: pays income tax (IRPF), with a progressive scale that can reach high marginal rates as profits increase.
- Company: pays corporate tax, generally at a fixed rate (with reduced rates in certain cases, such as newly created companies during their first profitable years), regardless of the profit level, which can be more tax-efficient beyond certain profit thresholds.
The exact tax comparison depends on multiple factors (profit level, need to withdraw money from the company, region of residence), so it's always worth getting a personalized analysis from a tax advisor before deciding.
Differences in Social Security contributions
A self-employed company director is subject to specific minimum contribution bases, generally higher than those a sole trader with low earnings could apply, since regulations don't allow company directors to access the reduced contribution brackets designed for self-employed workers with low net earnings.
Costs of setting up and maintaining a company
Forming a company involves upfront costs (notary, commercial registry) and ongoing management costs (mandatory commercial bookkeeping, more complex than that of a sole trader, plus obligations to file annual accounts), which need to be factored in when assessing whether the switch is really worth it for your level of activity.
When the switch is usually considered
Moving from sole trader to company is usually considered when profit levels are already high enough that the tax difference offsets the extra management costs, or when protecting personal assets from business risks becomes a priority, for example when taking on larger financial commitments.
Compare your current tax burden
Our net salary calculator can serve as a reference to compare how much net income you'd get from an equivalent salary if you decide to pay yourself as a company director instead of paying income tax directly as a sole trader.