I am a 28 year old Swedish citizen living in Switzerland as a PhD student. It is possible that I will move internationally one or more times before settling down. I will stay for at least 3 years, possibly longer. It is also possible that I will stay for the rest of my life.
The Swiss system is based around three different pillars where the first and second are mandatory.
The third pillar allows tax deductions and can be used for buying property, making it an interesting choice. However the interest rates seem very low, ZKB for example has an interest rate of 0.125%, which seems to low to even bother.
Another alternative would be to purchase index funds or similar every month. The downside is that there is no protection against bankruptcy and I might be tempted to use the savings at some point in the future. The benefit is that these funds can be accessed without having to worry about changing retirement rules, limitations when moving, etc.
How can I build a sustainable retirement saving which is mobile, safe and efficient?
I am looking to save 100-300 CHF per month right now, a number which I will increase as my salary grows.
Further info
I have student debt amounting to ca 250000 SEK (roughly 27000 CHF or $). This is low interest and I am paying it off at the standard pace ~1000 CHF/year. Other than this I am debt free.
I have a monthly salary saved in cash and somewhat less than a yearly salary in various funds and stocks.
I intend to purchase a house and land (forest) within the next 5-10 years.
A similar question focused on the USA case: Effects of moving around on pension