Taxation of the liquidation surplus

Closing a business is not just an organisational matter: it is a delicate tax moment. When a company is wound up or an entrepreneur ceases their activity, hidden reserves, accumulated capital gains and distributable profits surface — amounts that until then had lain “dormant” on the balance sheet. Taxing them can significantly affect the final result. Understanding the mechanics of the liquidation surplus in advance makes it possible to plan the exit without surprises.

Two very different scenarios

The tax treatment changes radically depending on the legal form.

Corporations (AG / GmbH)

In the formal liquidation of an AG or a GmbH, two levels are distinguished:

• At company level: realising the assets brings out the hidden reserves (the difference between book value and realisation value), which flow into the profit of the final financial year and are subject to profit tax.
• At shareholder level: the liquidation surplus, meaning whatever is received over and above the nominal value of the paid-in capital, is treated as income from participation. This surplus is subject to the 35% withholding tax, which the company must deduct and pay to the Federal Tax Administration.

For a shareholder who is a natural person resident in Switzerland, the withholding tax is recoverable through the tax return, while the surplus is taxable as income. If the participations are held as business assets or exceed 10% of the capital, the relief for qualified participations may apply, easing the economic double taxation. An important role is played by the capital contribution reserves, whose repayment to shareholders is treated as a return of capital and therefore not subject to withholding tax nor taxable as income, provided it has been duly certified.

Sole proprietorships and partnerships

For the entrepreneur trading in their own name, ceasing the activity brings out the hidden reserves on the business assets. The liquidation surplus arising from the dissolution is subject to income tax, but federal law provides for privileged treatment when the cessation occurs after the entrepreneur turns 55 or on grounds of disability.

In these cases the liquidation surplus realised in the last two financial years is taxed separately from the rest of the income and at a reduced rate. The portion corresponding to a notional pension buy-in is privileged like a pension benefit, while the remaining part is taxed at a favourable rate. It is a measure designed not to penalise those who effectively build up their old-age provision within the business.

Indirect partial liquidation

A frequent pitfall concerns the sale of participations. Anyone selling the shares of a company in principle realises a tax-exempt private capital gain. But this exemption can lapse if an indirect partial liquidation is triggered: this happens when the buyer, within five years, distributes non-operating substance that already existed at the time of the sale, and the seller helped make such a distribution possible.

In that case the proceeds that looked like an exempt private gain are reclassified as taxable income. It is one of the most delicate aspects of a company sale and must be assessed before signing, not afterwards.

Planning the exit

Several levers make it possible to manage the tax burden of a liquidation:

• Staggering the realisation of the assets over several financial years, where possible.
• Checking the existence and size of the capital contribution reserves.
• Assessing, for the sole proprietor, the timing relative to the age-55 threshold.
• Considering, as an alternative to liquidation, a restructuring or a transfer that benefits from tax deferral.

In summary

The liquidation surplus combines profit tax, withholding tax and income tax in an interplay that depends on the legal form and the owner’s profile. Planning started well in advance — even by several years — often makes the difference between an orderly exit and an avoidable tax bill.

Every situation must be analysed on the concrete figures and on cantonal practice. SIH ONE supports the closure and sale of companies with tailored tax analysis. Talk to our Tax Desk.