Switzerland 13th-Month Salary Calculator

Not by federal law as a universal right. The Swiss Code of Obligations doesn't mandate it for every employer. It becomes a binding entitlement only where it's explicitly agreed, in your individual employment contract, a company policy, or a Gesamtarbeitsvertrag (GAV, a sector-wide collective bargaining agreement). In practice, though, it's extremely common in Zurich and across Switzerland, especially in white-collar roles, so most job offers do include it even without a legal mandate.

Several sector-wide collective agreements make it contractually mandatory for covered employers, including hospitality (L-GAV, 100% of a monthly salary, pro-rated for partial years), construction (LMV), watchmaking (CPIH), metalworking (CMR), logistics, and cleaning. If you work in one of these sectors, check whether your employer is bound by the relevant GAV, in which case the 13th-month payment isn't optional.

Because a headline monthly figure alone doesn't say which structure it reflects. 'CHF 8,000/month' could mean CHF 96,000/year (12 payments, no 13th-month) or CHF 104,000/year (13 payments, one extra month built in), an 8.3% gap on the exact same quoted number. Employers rarely spell this out in the job ad itself, which is exactly the ambiguity this calculator resolves by showing you both readings side by side.

Not under Zurich's model in the way a true one-off bonus sometimes is. Because Swiss withholding and ordinary assessment are both calculated on your total annual gross rather than per payment, a 13th-month payment that's simply your normal monthly salary paid an extra time is taxed as part of the same annual figure. The two interpretations still net differently overall, though, since a 13-payment year has a genuinely higher annual gross than a 12-payment year at the same quoted monthly figure, and Switzerland's progressive bands mean that extra income is taxed at your marginal rate.

Most commonly as a lump sum in November or December, though some employers split it, paying half in June or July and half in December. Check your contract for the specific timing, since it affects your cash flow even though the annual total is the same either way.

If your contract includes a 13th-month payment that's pro-rated for a partial year (common if you start mid-year, or under GAVs like hospitality's L-GAV), your first year's 13th-month payment will be smaller than a full monthly salary, proportional to months actually worked. This calculator assumes a full year of employment; for a partial first year, prorate the 13th-month figure by months worked divided by 12 before comparing.

Yes, always confirm the actual structure in writing (offer letter or contract) before accepting, rather than relying on a job ad's headline number. Use this calculator to understand the size of the gap and what questions to ask, not as a substitute for getting the real answer from the employer.