Annual Bonus in Switzerland 2026: Rights, Calculation and Contract Clauses
In Switzerland, an annual bonus can be a contractual right, a discretionary gratification, or a 13th month salary — and the distinction is not always clear in employment contracts. This ambiguity generates frequent disputes, especially on departure mid-year, when the employer declares poor performance, or following an internal policy change.
The term "annual bonus" covers very different realities in Switzerland depending on how the employment contract is drafted. Some bonuses are fixed salary components — they must be paid once the agreed conditions are met. Others are left to the employer's discretion, with no legal obligation to pay. The boundary between the two is not always explicit in Swiss employment contracts, particularly in SMEs where "bonus," "premium" and "gratification" are used interchangeably.
This confusion is costly. An employee who leaves in June without understanding that their annual bonus is pro-ratable may leave several thousand francs on the table. Another who signs a departure agreement without including the "discretionary" bonus that had been verbally promised will discover too late that they have no recourse. The contract wording is everything — and checking the exact terms before a negotiation or departure can significantly change the outcome.
- Contractual bonus: payment is mandatory once the contractually agreed conditions are met (legally enforceable).
- Gratification (OR Art. 322d): discretionary — the employer can modify or suppress it from one year to the next.
- A bonus paid regularly and consistently for at least 3 consecutive years can acquire the status of an acquired right (Federal Tribunal case law).
- On departure, pro-rata bonus is owed if the contract includes a pro-rata clause or if the company's established practice confirms it.
- Bonuses are subject to all social security contributions (AHV, LPP, etc.) and income tax.
- The clause "bonus only payable to employees present on 31 December" is legal but contestable in certain departure situations.
Contractual bonus vs. discretionary gratification
The Code of Obligations (Art. 322d) distinguishes the contractual bonus from the gratification. The contractual bonus is a salary component: if the contract specifies the payment conditions (seniority, targets, attendance), the employer is obliged to pay it once those conditions are met. The gratification is paid at the employer's discretion — they can decide each year not to pay it, to reduce it or to suppress it without justifying their decision, provided the contract has clearly qualified the component as discretionary. The boundary becomes blurred when the contract uses ambiguous wording such as "a bonus may be paid depending on results" — "may" leaves room for judicial interpretation.
Bonus by custom: when practice creates rights
The Swiss Federal Tribunal has developed consistent case law on the transformation of a discretionary gratification into an acquired right. If a bonus has been paid regularly, at a stable or increasing amount, for at least three consecutive years, the employee can argue that it has become a contractual element through custom. The proof rests on payslips, bonus communication emails and any internal documents mentioning the criteria. This acquired-rights theory does not apply where the employer has taken care each year to specify that the bonus was exceptional and non-recurring.
Departure mid-year: pro-rata of the bonus
The most common question in practice: what happens if I leave in June and the bonus is paid in December? If the contract expressly includes a presence clause on 31 December, the bonus is in principle not owed for the incomplete year. If no such clause is stipulated, the contractual bonus is prorated — the employee is entitled to the fraction corresponding to the months worked. The 31 December presence clause is legal according to the Federal Tribunal, but it must be explicitly provided for in the contract and cannot be applied retroactively to an already partially accrued bonus. A departure agreement must explicitly address the treatment of the current year's annual bonus to avoid subsequent disputes.
Tax treatment and social security contributions
Annual bonuses are subject to all social security contributions (AHV/AVS, IV/AI, EO/APG, ALV/AC, LPP depending on fund rules, accident insurance). For income tax purposes, the bonus is taxable in the year of payment regardless of the reference year for which it is calculated. A bonus paid in January 2027 for fiscal year 2026 is taxable in 2027 — which can have significant implications for tax planning, particularly when leaving Switzerland or changing tax domicile. The LPP accounting of the bonus depends on the pension fund rules: some funds cap contributions on the variable portion, others integrate it fully into the insured salary.
Frequently asked questions
My contract says "bonus depending on company results" — is that a right or an option?
This wording is ambiguous and can be interpreted either way. If the "company results" are defined with precise, measurable indicators in the contract, the bonus becomes enforceable once those indicators are met. If the wording remains vague, the employer retains significant discretion. In a dispute, the court will analyse the company's historical practice, internal communications about the bonus and the circumstances of the initial salary negotiation to determine the parties' intentions.
My employer suppressed the bonus this year citing poor results. Is that legal?
If the bonus is a discretionary gratification, yes — the employer can suppress it. If it is a contractual bonus with defined conditions that have been met, no. If the bonus has been paid regularly for several years without an annual caveat, you can invoke acquired rights through custom. In all three cases, request the precise reasons for the suppression in writing — this step is the foundation of any subsequent legal recourse and often leads in practice to a partial payment.
Is the annual bonus included in the calculation of salary for unemployment benefits?
Yes, to the extent that it is regular and constitutes a determining salary element (Art. 23 LACI). The insured earnings for unemployment benefit (ceiling at CHF 148,200 in 2026) include the monthly salary multiplied by 12, plus regularly paid variable components — including the annual bonus. It must therefore appear in the payslip summary sent to the unemployment fund. If it was paid irregularly or on a discretionary basis, it may be excluded from the calculation — an additional reason to document its contractual nature.