Small Business Tax in Switzerland

Switzerland imposes corporate income tax (CIT) at three distinct levels: the federal government, the 26 cantons, and their constituent communes. For a GmbH (limited liability company) or AG (joint-stock company), these three layers combine to produce an effective all-in CIT rate that varies substantially by location. The federal element is fixed nationwide; the cantonal and communal components differ in every jurisdiction. Sole proprietors and general partnerships are not subject to this corporate regime and instead pay tax through the personal income-tax system.

All figures below reflect the 2025 tax year unless stated otherwise. Currency is Swiss francs (CHF). Consult a qualified tax professional before acting on any of this information.

What are the corporate income tax rates in Switzerland?

The Confederation levies a flat CIT of 8.5% on profit after tax, which equates to roughly 7.83% on profit before tax because taxes are themselves deductible from the taxable base. Cantons and communes add their own profit taxes on top; the combined federal, cantonal, and communal effective rate ranges from approximately 11.85% in Zug (Switzerland's most tax-competitive canton) to around 20.5% in Bern. The KPMG Clarity on Swiss Taxes 2025 survey reports the national average fell from 14.6% in 2024 to 14.4% in 2025, continuing a gradual post-STAF decline. [1] Both GmbH and AG structures are treated identically under this framework: they are both Kapitalgesellschaften (capital companies) subject to identical federal and cantonal profit-tax rules. The minimum share capital differs -- CHF 20,000 (fully paid) for a GmbH versus CHF 100,000 (minimum CHF 50,000 paid-in) for an AG -- but the tax obligations are the same. [2]

Source: Taxolution Swiss Tax Guide 2026 [2] and KPMG Clarity on Swiss Taxes 2025 [3]. Rates are effective (all-in) estimates for the main city in each canton and may vary by commune.

What is the cantonal capital tax and how does it apply?

Switzerland levies no capital tax at the federal level, but all cantons impose an annual capital tax (Kapitalsteuer) on the net equity of companies. The taxable base includes paid-in share capital, statutory reserves, retained earnings, and capital contribution reserves. Rates range from around 0.001% to 0.5% of equity depending on canton and commune. For a typical company in Zurich, the combined cantonal and communal capital tax is approximately 0.17% of equity per year. [4] Most cantons allow companies to credit their profit tax against capital tax liability under Article 30 of the Tax Harmonisation Act (StHG), effectively reducing the capital tax to zero in profitable years -- Zug is a notable exception that applies both charges separately. Capital tax matters most for asset-heavy or holding structures with low operating profits.

How does the STAF reform affect privileged cantonal tax regimes?

The Federal Act on Tax Reform and AHV Financing (STAF, German: TRAF -- Bundesgesetz uber die Steuerreform und die AHV-Finanzierung) came into force on 1 January 2020 following approval by Swiss voters (66.4% in favour) in May 2019. The reform abolished the cantonal ring-fenced regimes that had attracted international criticism -- specifically holding-company status, mixed-company status (typical for trading and service companies with mainly foreign-source income), and domicile-company status. These are permanently gone; no canton may reinstate them. [5] In their place, STAF introduced a suite of OECD-compliant instruments that cantons may adopt individually: a patent box capping taxes on qualifying IP income, an R&D super-deduction of up to 50% on Swiss research costs, and a relief on notional interest on equity (the latter only available to cantons with an effective CIT burden of at least 18.03%). A binding minimum-tax floor ensures that at least 30% of profit is always subject to ordinary taxation even when multiple STAF reliefs are stacked. Federal CIT does not recognise any STAF reliefs -- they apply only at the cantonal and communal level. [1]

What is the patent box and how much relief does it give?

Under STAF (StHG Article 24a), cantons may ring-fence income derived from qualifying patents and comparable rights -- typically patents, supplementary protection certificates, and certain software -- and tax only the portion that cannot be attributed to qualifying R&D performed in Switzerland. The maximum relief is up to 90% exemption of qualifying IP income from cantonal and communal CIT, subject to the modified nexus approach set by the OECD. [1] R&D expenses previously deducted against ordinary income must be recaptured (taxed at ordinary rates) before patent-box benefits commence -- the so-called R&D input box. Cantons also have the option to grant an additional deduction of up to 50% of Swiss R&D expenditure (the super-deduction) on top of ordinary expensing. The combined impact of patent box plus R&D super-deduction can reduce a canton's effective CIT on qualifying income well below headline rates, making Switzerland competitive for IP-holding entities even without the old privileged regimes.

How are sole proprietors and partnerships taxed?

A sole proprietorship (Einzelfirma) and a general partnership (Kollektivgesellschaft) are fiscally transparent: business profits flow directly into the owner's personal tax return and are taxed as personal income at individual income-tax rates. There is no separate corporate tax; the business profit is simply treated as earned income of the natural person. Because the business is an extension of the individual, Switzerland's old-age and survivors' insurance contributions (AHV/IV/EO) also apply to net business income. AHV contributions for the self-employed are levied on a degressive scale: those earning more than CHF 60,500 per year pay a combined AHV/IV/EO contribution of 10% of net profit (employee and employer share combined, since the sole proprietor is both). Those below CHF 60,500 pay a lower rate on a sliding scale; the minimum annual contribution is CHF 530 regardless of profit level. [6] Pillar 3a voluntary pension contributions of up to 20% of net profit (maximum CHF 36,288 in 2025) are deductible from taxable income, providing a meaningful deferral tool. Unlike a GmbH or AG, a sole proprietorship can use simplified bookkeeping if annual turnover is under CHF 500,000. Owners should compare the aggregate personal-income-tax-plus-AHV burden against the GmbH/AG corporate route with salary extraction as businesses scale; the crossover point varies by canton and individual tax bracket.

What VAT (MWST) obligations apply to small businesses?

Swiss value-added tax -- Mehrwertsteuer (MWST) in German, taxe sur la valeur ajoutee (TVA) in French -- applies once a business's worldwide taxable turnover reaches CHF 100,000 per year. Registration is mandatory at that threshold; below it, voluntary registration is possible but rarely advantageous for B2C businesses. Since 1 January 2024, the standard rate is 8.1%, a reduced rate of 2.6% covers necessities including food, non-alcoholic beverages, books, newspapers, and medicines, and an accommodation rate of 3.8% applies to hotel overnight stays including breakfast. [7] Businesses with annual turnover up to CHF 5,005,000 may file VAT returns annually rather than quarterly (as of 1 January 2025). Foreign platform operators with Swiss customers became liable as registered deemed suppliers under MWSTG Article 20a from 1 January 2025. The federal tax administration (ESTV) oversees VAT registration and compliance; the formal registration portal is at www.estv.admin.ch.

For information on how Switzerland's extensive country overview and further tax topics may affect your specific situation, review the jurisdiction summary. All descriptions above reflect publicly available law and official guidance; nothing here substitutes for an assessment by a qualified tax professional with knowledge of your particular circumstances.