Prerequisites and eligibility
1. Who can pay into pillar 3a retroactively?
Only persons who earned income in Switzerland subject to OASI contributions in the year for which they want to make a payment and who are also employed in the year in which the back payment is made can make retroactive payments.
2. For which years are back payments possible?
It is only possible to make up contribution shortfalls from 2025. Gaps from previous years (before 2025) are excluded.
3. What about gap years without income?
If no income subject to OASI contributions was earned in the gap year (e.g. while studying without a part-time job, spending a year abroad without working), there can be no purchase.
4. Can self-employed persons also make back payments?
Yes, self-employed people without BVG affiliation and with a corresponding income may also make purchases – again only for years from 2025. However, only up to the small maximum amount (e.g. for 2025: CHF 7,258)
Sum and period for which purchases can be made
5. For how far back can retroactive payments be made?
Purchases can be made retroactively for up to ten years. This means that a purchase for 2025 will be permitted for the first time from 2026.
6. How is the gap calculated for a reference year?
With or without a pension fund: maximum amount e.g. for 2025: CHF 7,258 less savings contributions already made.
7. Can I fill several gap years retroactively at the same time?
Yes – the sum of the maximum possible purchases corresponds to the total of the gaps in the last up to ten years, which can all be paid up in one year.
8. Does the current annual contribution have to be paid first?
Yes, you can only make purchases for previous years once you have already paid in the maximum amount for the current calendar year.
Process and formalities
9. Where do I submit an application for a purchase?
The accountholder applies in writing to their pension fund for the purchase.
10. What documents are required?
We need the form “Application for retroactive pillar 3a purchases”. You can find this form in the Download Center on our homepage.
11. By when must the purchase be made?
The purchases can only be made once within a calendar year. There can be no distribution of the same gap over several years or within one year.
Tax and legal issues
12. Are purchases fully tax-deductible?
Yes. Back payments where all conditions have been met can be deducted from taxable income in addition to the ordinary contribution.
13. Do purchases have an impact on wealth tax?
No, tax-exempt pension assets in pillar 3a are not subject to wealth tax.
14. How are purchases recorded for tax purposes?
Back payments are deducted in the tax return in the same way as normal pillar 3a payments but must be listed separately from the current contribution.
15. Can I still make retroactive purchases after a withdrawal from a 3a account solution?
If pillar 3a funds have already been paid out in full or in part, purchases can be made to cover any gaps.
16. What happens if a withdrawal has already been made due to retirement?
If retirement benefits from pillar 3a have already been withdrawn in full or in part from pillar 3a, no further purchase can be made.
Special cases and restrictions
17. Can I make back payments for years without earned income?
No – back payments are only possible for years with income subject to OASI contributions in the contribution year. No purchases may be made for contribution years without earned income.
18. Are purchases possible in the event of divorce or early withdrawal for home ownership?
No – such back payments do not come under the law.
19. Are purchases possible to close gaps resulting from a divorce case or from an early withdrawal for home ownership?
No, such back payments do not come under the law.
20. Are there any transitional or special regulations for the years before 2025?
No – purchases only cover gaps from 2025. Contribution gaps before 2025 cannot be made up.