Pillar 3a for Self-Employed: The Big 3a Deduction Up to CHF 36'288

By Thierry Borgeat, CFA & Co-Founder · Reviewed by Patrick Rissi, CFA and Florian Jauch, CFA · Updated May 2026 · 10 minute read

As a self-employed person without a pension fund, you have by far the greatest tax optimisation potential in Swiss retirement planning. While employees with a PK are limited to CHF 7'258 per year, you can contribute up to CHF 36'288 (2026) to your Pillar 3a — that's 5× more. At a marginal tax rate of 35%, you save over CHF 12'000 in tax annually. Over 35 years, that adds up to around CHF 420'000 in tax savings. This article shows you who truly qualifies, how the big 3a deduction works, and how to build an optimal multi-account strategy as a self-employed person — including withdrawal planning with deferred retirement.

Who qualifies for the big 3a deduction?

The big 3a deduction is available exclusively to self-employed without a pension fund. What sounds simple is often misunderstood in practice. The main constellations:

The most common misconception: Those who freelance on the side and are employed with a PK CANNOT use the big deduction. As soon as a pension fund exists — in any amount — only the small deduction of CHF 7'258 applies. Even those earning 80% income from freelancing and 20% from a mini-employment with PK are limited to the small deduction.

What tax authorities check

The decisive figure is the net earned income from self-employment declared in the tax assessment. Not revenue, but revenue minus business expenses minus AHV/IV/EO contributions. Someone with CHF 150'000 revenue in the tax year, but CHF 50'000 business expenses and CHF 15'000 social security contributions, has a relevant net earned income of CHF 85'000 — and can contribute a maximum of 20% = CHF 17'000 to 3a.

How the big 3a deduction works

The rule is mathematically simple: 20% of your net earned income, maximum CHF 36'288 per year (2026). What this yields at different income levels:

The cap of CHF 36'288 (2026) is reached at a net earned income of around CHF 181'500. Those earning more cannot contribute beyond the cap. Those earning less are limited to 20% — but that's still significantly more than CHF 7'258 for employees.

What about fluctuating income?

Self-employed often have significant income fluctuations — good years at CHF 200'000, lean ones at CHF 60'000. The rule: the maximum amount is calculated separately for each year, based on that year's net income. You cannot average across years.

But: since 2025, 3a retroactive contributions are possible. Those who contribute only partially in a good year can catch up later — up to 10 years back. Retroactive contributions always use the maximum amount valid at that time, not the current one. More on this in our article: Pillar 3a Retroactive Contributions 2026.

What you save in tax — concretely

The tax savings equal your personal marginal tax rate × contributed amount. For self-employed with higher income, both are typically high:

Note the paradox: In high-tax cantons, tax savings are larger because the marginal tax rate is higher. At withdrawal the opposite happens — high-tax cantons tax the lump-sum withdrawal more heavily. Therefore, residence planning for self-employed is doubly important: contribute cheaply, withdraw cheaply.

Example: Sarah as a freelance designer

Sarah is 30, a freelance designer in Zürich, without a pension fund. Her net earned income varies: 4 years at CHF 70'000, then rising to CHF 150'000 by age 50. She consistently uses the big 3a deduction — annually 20% of her income, but no more than the cap.

Sarah's withdrawal strategy

With 3a assets of CHF 1.62M and only 5 accounts, Sarah would withdraw around CHF 325'000 per payout — a significantly larger amount than for an employee. Progression would be considerable. Solution: 8 instead of 5 accounts (even though the maximum staggering duration still remains 5 years) and deferred retirement until 70.

With 8 accounts and deferred retirement (withdrawal 60-65 plus 65-70 because she keeps working), Sarah spreads her CHF 1.62M across 10 different tax years. Each withdrawal = approx. CHF 162'000. Tax per withdrawal (ZH): approx. CHF 8'500. Total: approx. CHF 85'000. With a single withdrawal of CHF 1.62M, she would have paid approx. CHF 220'000. Saving: CHF 135'000.

The multi-account strategy for self-employed

While employees are well-served with 5 accounts, self-employed with high 3a assets need 6-10 separate accounts. The reason: at assets of CHF 1M+, each individual withdrawal (in the 5-year window) becomes so large that progression hits again — even with optimal staggering.

Rule of thumb: One additional account per CHF 200'000

Important: more than 10 accounts don't pay off operationally — administrative effort exceeds marginal tax savings. Those reaching CHF 2.5M+ should instead use deferred retirement to withdraw over 10 instead of 5 tax years.

Provider strategy

With 8-10 accounts, mixing providers especially pays off:

• 3-4 accounts with an asset manager (securities, long-term)
• 3-4 accounts with a pension foundation (different strategies for diversification)
• 1-2 accounts in more defensive strategies (for the last 5 years before withdrawal)

For strategy choice per account: Pillar 3a 5-Account Strategy.

Deferred retirement as a game-changer

Here it becomes particularly attractive for self-employed: you don't have to retire at 65. If you remain self-employed, you can defer the 3a withdrawal up to age 70. This creates 10 instead of 5 withdrawal years (60-70 instead of 60-65).

For self-employed, this often comes naturally — many work longer voluntarily because they see their self-employment as a vocation, because they gradually hand over their company to successors, or because they continue part-time. Pillar 3a fits this life plan perfectly.

Example: 10-year withdrawal plan for Sarah

Sarah has 3a assets of CHF 1.62M on 10 accounts at age 60. She plans to continue part-time until 70. Her withdrawal plan:

• Age 60-64: Annually 1 account of CHF 162'000 → 5 withdrawals
• Age 65: AHV pension starts, no 3a withdrawal
• Age 66-70: Annually 1 account of CHF 162'000 → 5 more withdrawals

Total: 10 withdrawals in 10 different tax years. Tax per withdrawal (ZH, single): approx. CHF 8'500. Total tax: approx. CHF 85'000. With a naive single withdrawal of CHF 1.62M: approx. CHF 220'000. Saving: CHF 135'000 (62% less).

PK affiliation vs. big 3a deduction?

Self-employed can voluntarily affiliate with an industry pension fund or the BVG substitute foundation. This is a conscious decision with trade-offs:

Advantages of voluntary PK affiliation

• Risk coverage: death and disability are better covered
• Possibility for PK buy-ins (additional tax optimisation)
• Higher overall provision: 2nd pillar + 3a combined
• Structured retirement annuity possible

Disadvantages of PK affiliation

• Loss of the big 3a deduction: only CHF 7'258 instead of CHF 36'288
• PK contributions burden cash flow (often 15-20% of income)
• Less flexibility than 3a
• BVG returns often below market return (redistribution)

When does PK affiliation pay off?

Typical self-employed mistakes

1. Only using the small deduction. Pure self-employed who only contribute CHF 7'258 forfeit CHF 29'000 in deduction potential per year. With maximum contribution of CHF 36'288, one saves CHF 10'000-15'000 more in tax every year.
2. "I earn too little for the big 3a". Even at CHF 50'000 income, one can contribute 20% = CHF 10'000 — and save CHF 2'500-3'500 in tax. Every franc counts.
3. Only a single 3a account. With assets of CHF 1M+, progression loss is dramatic. At least 6-8 accounts are mandatory.
4. PK affiliation without calculation. Those joining a PK out of "protection" feelings often lose the financial benefit of the big deduction. Calculate first, then decide.
5. Not compensating fluctuating income. Those not maxing out in good years can do so later — since 2025, 3a retroactive contributions up to 10 years back are possible.
6. Not planning deferred retirement. For high 3a assets, deferral until 70 is a central tax optimisation. Many don't even know they're allowed to.
7. Self-employment ↔ salaried switch without plan. Those switching mid-year should clarify proportional deduction rules with their tax advisor.
8. Cash instead of securities. At the significantly higher amounts (compared to employees), the return loss with cash 3a becomes even more dramatic. CHF 36'000/year in a 0.5% savings account vs. 5% securities-3a: over 30 years a difference of CHF 800'000.

Checklist by life phase

Frequently asked questions: 3a for self-employed