Sole Proprietorship in Switzerland: Registration Guide

The sole proprietorship (Einzelunternehmen / entreprise individuelle) is the simplest and most common business structure in Switzerland. It requires no minimum capital, no articles of association, and no notarial deed. For freelancers, consultants, tradespeople, and small business operators, it offers an accessible entry point into Swiss commercial activity — but it comes with unlimited personal liability and certain limitations on growth.

Legal Foundation

The sole proprietorship is governed by the general provisions of the Swiss Code of Obligations and by specific rules regarding commercial registration. Unlike the AG or GmbH, a sole proprietorship is not a separate legal entity. The business and its owner are legally identical, meaning all rights, obligations, and liabilities belong directly to the proprietor.

Who Can Establish a Sole Proprietorship

Any natural person may operate a sole proprietorship in Switzerland, provided they have the legal capacity to enter into contracts. There is no Swiss nationality requirement, but non-Swiss nationals must hold a valid work permit (typically a B or C permit) that authorises self-employment. Cross-border commuters (G permit holders) may also operate sole proprietorships under certain conditions — for more details, see our guide on cross-border workers.

Registration Requirements

Mandatory vs. Voluntary Registration

Registration with the cantonal commercial registry is mandatory if the sole proprietorship generates annual revenue of CHF 100,000 or more. Below this threshold, registration is voluntary but can offer advantages, including:

• Enhanced credibility with clients, suppliers, and banks
• Ability to use the business name in legal transactions
• Public visibility through the commercial registry database
• Easier access to business bank accounts

Registration Process

To register a sole proprietorship, the proprietor must submit the following to the cantonal commercial registry:

1. Application form: Signed by the proprietor, specifying the business name, registered office, and purpose.
2. Identification: A valid passport or identity card.
3. Residence confirmation: Proof of domicile in Switzerland.
4. Specimen signature: An authenticated signature for the registry records.

The business name must include the proprietor’s surname (e.g., “Müller Consulting” or “A. Müller, Architektur”). The company name rules for sole proprietorships are somewhat more flexible than for corporations, but the name must not be misleading.

Registration fees are modest — typically CHF 120 to 400, depending on the canton.

AHV Registration

Regardless of commercial registry enrolment, any person operating a sole proprietorship must register as self-employed with the cantonal compensation office (Ausgleichskasse) for AHV/IV/EO social security contributions. The compensation office assesses the proprietor’s status based on the degree of economic independence, number of clients, and risk-bearing profile.

Taxation

Income Tax

The sole proprietorship’s profits are taxed as personal income of the proprietor at both the cantonal and federal level. There is no separate corporate tax. This means:

• Profits are subject to progressive income tax rates
• Business expenses are deductible against revenue
• Losses may be carried forward for up to seven years
• The proprietor’s private and business income are combined for tax purposes

VAT

Registration for value-added tax is mandatory if annual revenue exceeds CHF 100,000. Below this threshold, voluntary registration is possible and may be advantageous if the business serves primarily VAT-registered clients (who can recover input VAT) or if the business incurs significant VAT-bearing expenses.

No Withholding Tax

Unlike dividends from an AG or GmbH, profits withdrawn from a sole proprietorship are not subject to Swiss withholding tax. This simplifies cash flow management.

Social Insurance Obligations

Self-employed sole proprietors must contribute to the first pillar (AHV/IV/EO) of the Swiss pension system. Contribution rates for the self-employed are currently 10.0% of net income (with a declining scale for income below CHF 58,800).

Second pillar (BVG/LPP) pension contributions are voluntary for the self-employed. Proprietors may join the pension fund of their professional association or a collective foundation. Third pillar (Pillar 3a) contributions are available and tax-deductible, with annual limits set by the federal government.

Accident insurance (UVG) is not mandatory for the self-employed but is strongly recommended. If the proprietor employs staff, employer accident insurance obligations apply.

Advantages

• Simplicity: No formation formalities, no minimum capital, no notary requirements.
• Low cost: Minimal registration fees and no share capital deposit.
• Full control: The proprietor has complete decision-making authority.
• Tax simplicity: One tax return, no separate corporate filing.
• No withholding tax: Profits are not subject to the 35% withholding tax on distribution.
• Privacy: Below the CHF 100,000 revenue threshold, registration (and thus public disclosure) is not required.

Disadvantages

• Unlimited liability: The proprietor is personally liable for all business debts and obligations. Personal assets — including real estate, savings, and investments — may be seized by creditors.
• Limited growth potential: The structure does not accommodate outside investors or equity-based compensation schemes.
• Progressive taxation: At higher income levels, the progressive personal income tax rate may exceed the effective corporate tax rate available to an AG or GmbH in favourable cantons.
• Transferability: The business cannot be sold as a going concern in the same way as shares in a company. A sale requires the transfer of individual assets and contracts.
• Perception: Some clients and business partners — particularly large corporations and international counterparties — may prefer to work with incorporated entities.

When to Incorporate

Many sole proprietorships eventually reach a point where incorporation as a GmbH or AG becomes advantageous. Key triggers include:

• Revenue growth: When profits consistently exceed CHF 100,000–150,000, the flat corporate tax rate may be more favourable than progressive personal income tax.
• Liability exposure: As the business takes on larger contracts or operational risks, the protection of limited liability becomes increasingly valuable.
• Hiring: While sole proprietors can employ staff, the administrative burden grows, and an incorporated entity offers a cleaner framework for employment relationships.
• External investment: If the business requires outside capital, a sole proprietorship cannot issue shares. Conversion to a GmbH or AG is necessary.
• Succession planning: Transferring an incorporated business to a successor (whether family or third party) is more straightforward than transferring a sole proprietorship.

Conversion to GmbH or AG

A sole proprietorship can be converted into a GmbH or AG through a statutory conversion under the Swiss Merger Act. This allows the business to continue without interruption — contracts, licences, and commercial registry entries are transferred by operation of law. Alternatively, the proprietor may incorporate a new entity and transfer assets and contracts individually, though this is less efficient.

The conversion requires notarisation, preparation of articles of association, and deposit of the minimum share capital.

Bookkeeping and Accounting

Sole proprietorships with annual revenue exceeding CHF 500,000 must maintain proper books of account in accordance with the Swiss Code of Obligations. Below this threshold, simplified accounting (essentially income and expense tracking with a list of assets and liabilities) is sufficient.

Regardless of the threshold, maintaining organised financial records is essential for:

• Tax return preparation
• VAT reporting (if registered)
• Social insurance contribution calculations
• Monitoring business performance
• Securing bank financing

Practical Tips for New Sole Proprietors

1. Separate finances: Open a dedicated business bank account to keep personal and business transactions distinct.
2. Obtain adequate insurance: Consider professional liability insurance, loss-of-earnings insurance, and voluntary accident insurance.
3. Plan for retirement: Without mandatory second pillar contributions, self-employed individuals must take proactive steps to build retirement savings.
4. Reserve for taxes: Unlike employees who have taxes withheld at source, sole proprietors must make provisional tax payments. Set aside approximately 25–35% of net profits for tax obligations.
5. Understand freelancer rules: Ensure the business relationship with clients does not resemble disguised employment, which could trigger additional social insurance obligations.

Donovan Vanderbilt is a contributing editor at ZUG BUSINESS. This article is informational and does not constitute legal, tax, or financial advice.