Financial advice for international assignees in Switzerland
An assignment package looks generous until you realise how much of it depends on tax equalisation, social-security agreements and small print about housing, education and home-leave. We help you read the contract, run the numbers and plan for what happens when the assignment ends.
An international assignee in Switzerland is typically on a temporary contract (often 1-5 years), with social security covered either by Switzerland or by the home country under a totalisation agreement or - within the EU/EFTA - an A1 certificate that keeps the employee in the home-country system for up to 24 months (extendable). Many large employers apply tax equalisation, where the company guarantees the employee a 'hypothetical' home-country net and absorbs the difference vs the real Swiss tax. Assignees with genuinely temporary contracts can usually claim Swiss expatriate deductions for housing, school and relocation costs - rules tightened in 2018 and applied strictly since.
What assignees in Switzerland have to figure out
- 01
Tax equalisation vs tax protection
Tax equalisation: you pay a hypothetical home-country tax and the employer covers actual Swiss tax. Tax protection: you pay the lower of the two. The cash, the gross-up and the year-end reconciliation work very differently - and the contract wording matters.
- 02
Social security: A1, totalisation or Swiss?
EU/EFTA assignments often use an A1 certificate to keep the employee on home-country social security for up to 24 months, extendable. Non-EU assignments rely on bilateral totalisation agreements (e.g. with the US). Without either, you default into Swiss AHV/BVG.
- 03
Host vs home payroll
Some employers run a shadow Swiss payroll, others keep payroll at home and gross up the Swiss tax. The choice affects pension build-up, mortgage eligibility and what happens to unused pillar 3a / pillar 2 capacity.
- 04
Expatriate deductions (Expatriate Ordinance)
Genuinely temporary assignees with a clear home base can claim costs for housing, international-school fees and relocation. Since the 2018 reform, the rules are stricter (e.g. the home must remain available) and many cantons review claims carefully.
- 05
Pension when there's no Swiss pillar 2
If you stay on home-country payroll, you usually don't build pillar 2 in Switzerland. We help compare voluntary affiliation, private pillar 3a, and home-country pension top-ups to keep the long-term plan whole.
- 06
Pillar 3a, equity and bonuses on assignment
Pillar 3a is open to all Swiss tax residents - but practically only useful if you have Swiss-taxed earned income. RSU and bonus sourcing follow the days-worked rule, with potential extra reporting in your home country.
- 07
End-of-assignment and repatriation
Pillar 2 vested benefits, pillar 3a withdrawal, departure tax, account closure and the move back home all need a 6-12 month runway. The best time to plan the exit is at the start, not the end.
Get a second opinion on your assignment package
In a 30-minute call we read your assignment letter, run the equalisation, check your social-security status and tell you the three moves that most often save assignees real money over a 2-3 year contract.
How we help assignees
Taxes
Decode the tax-equalisation clause, claim expat deductions where eligible, file your Swiss return cleanly and plan the end-of-assignment year.
Plan Swiss tax on assignmentPension & investments
Replace the missing pillar 2 with deliberate pillar 3a, voluntary affiliation or home-country pension top-ups - alongside a portable global portfolio.
Plan pension and savings during a Swiss assignmentHealth insurance
Most assignees default into KVG / LAMal but can request exemption if a comparable international plan exists. We help compare and decide.
Compare KVG vs international health coverFinance & mortgage
Assignees rarely buy property but often need a Swiss bank account, FX and savings setup that survives the assignment - including how to repatriate funds cleanly.
Set up Swiss banking and FX as an assigneeHow we work with assignees
A clear three-step process designed to fit a 1-5 year assignment cycle.
1 · Free discovery call
30 minutes on video. We review your assignment letter, social-security paperwork, family situation and length of assignment.
2 · Your assignment roadmap
A written plan covering tax equalisation reading, expat deductions, pension strategy, health cover and a clear pre-repatriation checklist.
3 · Implementation and exit
We help you execute through the assignment and run the end-of-assignment process - pillar 2, pillar 3a, account closure, departure tax - 6-12 months before the move home.
Run the numbers yourself
Calculators are estimates for planning, not formal tax or investment advice.
Tax estimator
Sense-check your Swiss tax bill given expat deductions and any equalisation gross-up.
Open calculator →Pension gap
Estimate how much you would miss on Swiss pension build-up if you stay on home-country payroll for the whole assignment.
Open calculator →Health insurance premium comparison
Compare KVG / LAMal premiums by canton, age, deductible and model - your fallback if the international plan is rejected.
Open calculator →Assignee questions we hear most often
What is tax equalisation and how is it calculated?
Do I have to join Swiss social security?
Can I claim expat deductions on my Swiss tax return?
Should I take Swiss health insurance or stay on an international plan?
What happens to my pension when the assignment ends?
Is pillar 3a worth it for a 2-3 year assignment?
Let's pressure-test your Swiss assignment
A 30-minute call with an independent Hello Expats advisor - no obligation, no fees. We read your contract, run the equalisation and plan the assignment from arrival to repatriation.
Book a free assignee consultation →