Switzerland Corporate Tax Guide 2026

Federal Corporate Tax Rate — 7.8%

• Flat rate on profit: The federal corporate income tax (Direkte Bundessteuer) is levied at a flat rate of 7.8% on taxable profit after tax. Because federal tax is deductible from its own tax base, the effective rate on pre-tax profit is approximately 8.5%. The federal rate applies uniformly to all corporations (AG, GmbH) and cooperatives regardless of the canton of residence.
• Taxable base: Taxable profit is based on the commercially reported profit (Handelsbilanz) with tax adjustments (e.g., non-deductible expenses, provision adjustments, depreciation adjustments). The federal government does not levy a separate surcharge on corporate profits — the rate is a single flat percentage.
• Dividend participation relief: Swiss corporations receiving dividend income from qualifying shareholdings (at least 10% or a market value of CHF 1 million) are entitled to a participation deduction (Beteiligungsabzug) at both federal and cantonal levels. The deduction effectively exempts the dividend income from tax, avoiding economic double taxation. For capital gains on qualifying participations, a similar relief applies if the shares were held for at least 1 year and the participation is at least 10%.

Cantonal Corporate Tax Rates

• Zug (ZG): The cantonal+municipal rate is approximately 4.3%, giving a combined effective rate of approximately 11.5%. Zug is one of the lowest-tax cantons for corporations, attracting many holding, domiciliary, and operational companies. The capital tax rate in Zug is also very low (0.02% of equity).
• Zurich (ZH): The cantonal+municipal rate is approximately 7.8% (city of Zurich), giving a combined effective rate of approximately 19.7%. Zurich has a moderate corporate tax rate compared to other European financial centres, slightly higher than Zug but still competitive. Municipal multipliers vary within the canton.
• Geneva (GE): The cantonal+municipal rate is approximately 5.1%, giving a combined effective rate of approximately 14.0%. Geneva has a competitive corporate tax rate, though its personal tax rates are high. The cantonal government has maintained stable corporate tax rates post-STAF.
• Basel-Stadt (BS): The cantonal+municipal rate is approximately 13.5%, giving a combined effective rate of approximately 22.0%. Basel-Stadt has the highest corporate tax burden among major Swiss cantons, though still competitive by European standards.
• Other cantons: Schwyz (~12.0%), Nidwalden (~11.8%), Obwalden (~12.2%), Lucerne (~13.0%), St. Gallen (~15.5%), Bern (~16.5%), Vaud (~14.2%), Ticino (~16.5%), Aargau (~15.5%), Valais (~15.0%), Graubünden (~14.5%). All rates are subject to municipal multiplier variations.

Tax Reform STAF 2020

• Abolition of cantonal tax status: STAF (Steuerreform und AHV-Finanzierung), effective 1 January 2020, abolished the preferential cantonal tax regimes for holding, domiciliary, and mixed companies. These regimes had been criticised by the OECD and EU as harmful tax practices. Transitional provisions allowed existing status companies to maintain their benefits for a maximum of 5 years (until 2025). From 2025 onwards, all companies are taxed under the ordinary cantonal rate.
• Patent box (IP box): Cantons may introduce a patent box regime that allows companies to apply a partial exemption of up to 90% (cantonal level only) on qualifying IP income (income from patents, similar rights, and R&D-related IP). The reduced rate applies only at the cantonal level — federal tax is still due at 7.8% on the full IP income. The patent box is in line with OECD BEPS Action 5 (Nexus Approach).
• Notional Interest Deduction (NID): Cantons may introduce a notional interest deduction on excess equity (equity exceeding the company's business needs). The deduction is calculated by applying a notional interest rate (determined by the cantonal tax authority) to the excess equity and is deductible at the cantonal level only. NID is available in a limited number of cantons (e.g., Zurich, Basel-Stadt, Schaffhausen).
• R&D super deduction: Cantons may grant an additional deduction of up to 50% for qualifying R&D expenditure (personnel costs, research contracts). The super deduction is available at the cantonal level only. Combined with the patent box, this provides a strong incentive for innovation-driven companies to locate in Switzerland.

IP Box (Patent Box)

• Qualifying IP: Patents and similar rights (including utility models, plant variety rights, orphan drug designations, and supplementary protection certificates) that are based on qualifying R&D activities. Copyrighted software qualifies in cantons that have implemented a broad IP box. Marketing-related IP (trademarks, brands) does not qualify under the nexus approach.
• Exemption percentage: Cantons can exempt up to 90% of qualifying IP income from cantonal tax. The exact percentage varies by canton (typically 80–90%). For example, if the patent box exemption is 90% and the cantonal tax rate is 8%, the effective cantonal rate on IP income is 0.8%, giving a combined federal+cantonal rate of approximately 8.6% (7.8% federal + 0.8% cantonal).
• Nexus approach: The exemption is limited to income attributable to qualifying R&D activities performed by the taxpayer in Switzerland (or by related parties under cost-sharing agreements). Out-sourced R&D to unrelated parties cannot exceed 30% of the total qualifying R&D expenditure. The tracking requirement (nexus ratio calculation) adds administrative complexity — companies must document R&D expenditure and IP income separately.

Notional Interest Deduction (NID)

• Mechanism: NID allows a company to deduct a deemed interest expense on its excess equity from cantonal taxable income. The interest rate is determined by the cantonal tax authority and is typically based on the yield of 10-year Swiss government bonds plus a premium. In 2026, the NID rate is approximately 2–3% depending on the canton.
• Eligibility: Only cantons that have adopted NID legislation offer this benefit. As of 2026, NID is available in Zurich, Basel-Stadt, St. Gallen, Thurgau, Schaffhausen, and a few other cantons. Zug and Geneva do not offer NID. The deduction is limited to the higher of: the company's net equity minus its business equity (the equity deemed necessary for the company's operations).
• Impact: NID effectively reduces the cantonal tax burden on excess equity, making Switzerland attractive for capital-intensive companies (e.g., finance, insurance, holding companies). The deduction does not affect federal tax — it applies only to the cantonal/municipal level.

Capital Tax (Kapitalsteuer)

• Cantonal capital tax: Most cantons levy a capital tax on the company's net equity (share capital, reserves, retained earnings) as at the end of the tax year. The rate varies significantly: Zug approximately 0.02%, Zurich approximately 0.075%, Geneva approximately 0.09%, Basel-Stadt approximately 0.05%. Capital tax is deductible against corporate income tax in most cantons.
• Relief for IP and equity: Cantons with a patent box typically also reduce the capital tax base by the net book value of qualifying IP. Some cantons provide a capital tax allowance (e.g., the first CHF 100,000–1,000,000 of equity is exempt from capital tax).
• Impact on holding companies: Companies with significant equity (e.g., holding companies) benefit from low capital tax cantons like Zug (0.02%) or Schwyz (0.01%). The capital tax is a significant factor for holding companies because the tax is due regardless of profitability — a holding company with CHF 100 million in equity pays approximately CHF 20,000 per year in Zug versus CHF 75,000 in Zurich.

Filing and Deadlines

• Tax year: The tax year is the company's financial year (calendar year or fiscal year). Returns are due within 6–12 months after the end of the financial year, depending on the canton. Extensions are generally available upon request.
• Cantonal and federal filing: Most cantons require a combined return for cantonal/municipal and federal tax. The tax return includes the annual financial statements (balance sheet, profit and loss statement), tax adjustments, and supporting schedules (depreciation, provisions, participation income). Filing is typically electronic via the cantonal tax portal.
• Payment and instalments: Corporate income tax is due based on a provisional assessment (provisorische Rechnung) issued by the cantonal tax authority. Companies must make quarterly or annual advance payments based on the prior year's tax liability. Final assessment (Schlussrechnung) follows after the return is filed. Underpayment interest at approximately 4–6% applies for late or insufficient instalments.
• Group taxation: Switzerland does not have a formal group taxation regime for corporate income tax. Each legal entity is taxed separately. However, group restructuring (mergers, spin-offs) can generally be executed tax-neutrally under the Swiss Merger Act. A value-added tax (VAT) group (fiskale Einheit) is available but is limited to VAT purposes only.

FAQs

What is the effective corporate tax rate in Switzerland?

The combined effective federal + cantonal + municipal corporate tax rate ranges from approximately 11.5% (Zug) to 22.0% (Basel-Stadt), with Zurich at ~19.7%, Geneva at ~14.0%, and Vaud at ~14.2%. The federal rate alone is 7.8% (approx. 8.5% on pre-tax profit).

Can a foreign company relocate to Switzerland tax-neutrally?

Yes, a foreign company can relocate its registered seat (Sitzverlegung) to Switzerland under certain conditions. The relocation is treated as a tax-neutral liquidation of the foreign entity and a tax-neutral incorporation in Switzerland, subject to the applicable double tax treaty. Swiss corporate law requires the company to maintain its registered office in Switzerland. Advance tax rulings are recommended to confirm the tax treatment.

What is the patent box and how does it work?

The patent box allows a company to exempt up to 90% of qualifying IP income (from patents, similar rights, and R&D-related IP) from cantonal tax. The exemption applies only at the cantonal level — federal tax at 7.8% still applies to the full IP income. The patent box follows the OECD nexus approach, requiring qualifying R&D activities to be performed in Switzerland. Combined federal + cantonal rate on IP income can be as low as 8–9%.

Is there a minimum corporate tax in Switzerland?

Switzerland does not have a statutory minimum corporate tax. However, capital tax (on equity) applies regardless of profitability, creating a minimum tax burden. In low-capital-tax cantons like Zug (0.02%), the minimum tax on a company with CHF 100,000 equity is approximately CHF 20 per year. Companies with no equity or low equity may face a minimum cantonal tax of around CHF 500–2,000 depending on the canton.

Are Swiss holding companies still tax-advantageous after STAF?

Yes. While the preferential cantonal holding company status was abolished in 2020, the ordinary cantonal rates in low-tax cantons like Zug (4.3% cantonal) remain very attractive for holding companies. Participation relief (Beteiligungsabzug) at both federal and cantonal levels ensures that dividend income from qualifying participations is nearly tax-free. Capital tax in Zug is only 0.02% of equity. Switzerland remains one of the best jurisdictions in Europe for holding companies.

Disclaimer

This guide provides general information about the Swiss corporate tax system as of 2026. Tax laws, rates, and regulations are subject to change. The examples provided are illustrative and may not reflect your specific circumstances. Always consult a qualified Swiss tax advisor (Treuhänder) for advice tailored to your situation. InvestmentKit does not provide tax advice.