What is the pillar 3a cap in 2026?
In 2026, the annual deductible pillar 3a contribution is capped at CHF 7,258 for an employee affiliated with an occupational pension fund (the "small deduction"), or CHF 36,288 for a self-employed person without a second pillar (the "large deduction"), up to a maximum of 20% of earned income. These amounts are unchanged from 2025. Legal basis: Art. 7 para. 1 OPO 3 (German official version — French version available here).
| Status | 2024 (CHF) | 2025 (CHF) | 2026 (CHF) | Legal basis |
|---|---|---|---|---|
| Employee with pension fund | 7,056 | 7,258 | 7,258 | Art. 7 para. 1 lit. a OPO 3 |
| Self-employed without pension fund | 35,280 | 36,288 | 36,288 | Art. 7 para. 1 lit. b OPO 3 |
Technically, the "small deduction" equals 8% of the upper LOB limit set in Art. 8 para. 1 LOB. The "large deduction" equals 40% of the same upper limit, capped at 20% of earned income.
For self-employed persons, the calculation base for earned income is detailed in FTA Circular No. 18a of 22.12.2025 (circular available in French and German — see the German PDF), section 5.5: the profit and loss account balance after tax corrections and personal OASI/DI/EO 2026 first-pillar contributions, but before deducting the pillar 3a contributions themselves.
See the impact of a pillar 3a contribution on your net pay by canton.
What changed in 2025 regarding pillar 3a buy-backs?
Since 1 January 2025, the new Articles 7a and 7b OPO 3 allow retrospective buy-backs of pillar 3a contribution gaps over the last 10 years. Parliamentary origin: Motion 19.3702 "Allow buy-backs into pillar 3a" filed by Council of States member Erich Ettlin, adopted by both chambers. The amendment was adopted by the Federal Council on 6 November 2024 (official press release).
A transitional provision sharply limits the practical scope, however: only gaps that arose after entry into force (1.1.2025) can be bought back. Literal quote from the amending ordinance:
Contribution gaps under Article 7a para. 1 lit. a that arose before the entry into force of the amendment of … may not be closed by means of a buy-back.
In practice, this means that years 2015–2024 will never be buy-back eligible. The mechanism effectively activates from 2026 — the first year in which a gap (the 2025 one) can be filled.
| Buy-back year | Years whose gap can be filled |
|---|---|
| 2026 | 2025 only |
| 2027 | 2025, 2026 |
| 2028 | 2025, 2026, 2027 |
| 2029 | 2025–2028 |
| … | … |
| 2035 and later | rolling last 10 years |
What are the cumulative conditions for a pillar 3a buy-back in 2026?
Four cumulative conditions are set out in Art. 7a para. 1 OPO 3:
- Contribution gap in one of the 10 years preceding the buy-back. In 2026, only the 2025 gap is eligible (see transitional provision).
- OASI-subject earned income generated in Switzerland during the year being bought back (lit. b).
- Full payment of the ordinary contribution for the buy-back year (lit. c). The buy-back adds to the ordinary contribution; it does not replace it.
- No pillar 3a retirement benefit already drawn. FTA Circular 18a specifies that any withdrawal within the 5 years preceding the reference age qualifies as a retirement benefit and excludes the buy-back.
Only one buy-back is allowed per tax year (Art. 7a para. 3 OPO 3), but a single payment may fill several yearly gaps as years accumulate. A buy-back remains possible up to 5 years after the reference age, provided gainful activity continues (Art. 7a para. 5 OPO 3).
On documentation, Art. 7b OPO 3 requires a written request to the pension provider including: buy-back amount and years to fill, confirmation of the full ordinary contribution for the buy-back year, confirmation of OASI income earned in the year bought back, declaration of no prior buy-back and no retirement benefit drawn.
What is the pillar 3a buy-back cap?
The buy-back is capped at the "small deduction" of the buy-back year, i.e. CHF 7,258 in 2026 (Art. 7a para. 2 OPO 3) — not at the cap that applied in the year being bought back. The buy-back adds to the ordinary contribution. In 2026, the maximum total deductible for an employee who paid nothing in 2025 is therefore CHF 14,516 (CHF 7,258 ordinary + CHF 7,258 buy-back of the 2025 gap).
Worked examples:
- Case 1: An employee paid nothing in 2025. In 2026 they can contribute CHF 7,258 (ordinary 2026) plus CHF 7,258 (buy-back of the full 2025 gap) = CHF 14,516 deductible.
- Case 2: An employee paid CHF 3,000 in 2025 (gap of CHF 4,258). In 2026 they can pay CHF 7,258 (ordinary) + CHF 4,258 (buy-back capped at the gap) = CHF 11,516 deductible.
- Case 3: An employee paid the full cap in 2025. No gap, no buy-back possible. CHF 7,258 ordinary in 2026.
Practical reference: FTA Circular 18a, section 5.6 (no English version of the circular — German version above; French version here).
Which taxes does pillar 3a reduce?
The pillar 3a contribution is deductible against all three direct taxes simultaneously: federal direct tax (Art. 33 para. 1 lit. e DBG/FDTA), cantonal tax and communal tax — harmonisation is set out in Art. 9 para. 2 lit. e StHG/THA. This triple deductibility explains effective marginal rates significantly above the federal-only burden.
The pillar 3a deduction is classified as a general deduction for tax purposes (not as professional expenses). Art. 7 OPO 3 explicitly targets "the direct taxes of the Confederation, the cantons and the communes". Note: the pillar 3a contribution never appears on the monthly Swiss pay slip — it is deducted only at the annual tax return (or via a withholding tax adjustment for tax-at-source filers).
The actual tax saving on a contribution depends on the canton, commune, and the taxpayer's taxable income. As a rule of thumb, it can represent around 25% to 40% of the amount contributed in the most heavily taxed communes. The exact figure depends on the official federal tax scales combined with cantonal and communal scales. For married couples, the optimisation of the pillar 3a deduction will be reshaped by the individual taxation reform 2026–2028, which removes income aggregation and redistributes the marginal value of each deduction between spouses.
The actual saving depends on your commune and income — the Nsix Talent calculator returns the exact result in seconds for all 26 cantons.
When must you contribute for the tax year to count?
The decisive criterion is the date on which the pillar 3a account is credited, not the date of the bank transfer order or the debit date on your current account. FTA Circular 18a, section 5.1 states it textually:
The day on which the tied pension policy or the tied pension account of the taxpayer is credited is decisive.
To be deductible against the 2026 tax year, the contribution must therefore be credited by 31 December 2026 at the latest. Most providers close their systems a few days before year-end — aim for 24–27 December at the latest to absorb banking delays. The same rule applies to a buy-back, whether paid separately or combined with the ordinary contribution.
Cross-border workers, expats and special cases: who can contribute to pillar 3a?
FTA Circular 18a, section 3 explicitly confirms:
Cross-border commuters domiciled abroad and paid by an employer in Switzerland may also build up a pillar 3a; whether they can deduct their contributions in Switzerland or not is irrelevant in this respect.
For French cross-border workers taxed at source, the effective deduction depends on status. Taxpayers who meet the conditions of quasi-resident (Art. 99a DBG/FDTA) — typically with at least 90% of their worldwide income earned in Switzerland — can request a subsequent ordinary assessment and effectively deduct their pillar 3a contributions from their Swiss taxes.
Multiple 3a accounts allowed: a taxpayer may hold several tied pension contracts with different providers (FTA Circ. 18a, section 5.2). The annual global cap is unchanged: the sum of all accounts cannot exceed the OPO 3 cap. The maximum number of accounts is not set by the FTA at the federal level — staggering withdrawals over several years to reduce the progression of the special capital-benefits tax is a matter of cantonal case law.
Procédure
How to make a pillar 3a buy-back in 2026 — practical steps
The following procedure reflects the requirements of Art. 7b OPO 3 and FTA Circular No. 18a.
- 1
Check that a 2025 gap exists
Take your 2025 pillar 3a annual statement (provider's confirmation). The difference between CHF 7,258 and what you actually contributed is the gap eligible for buy-back in 2026.
- 2
Estimate your potential tax saving
Compute the approximate tax saving by multiplying the amount paid by your cumulative marginal rate (federal + cantonal + communal). The Nsix Talent calculator (/calculator) gives a per-canton estimate.
- 3
Request the forms from your provider
Submit a written request to your bank foundation or pillar 3a insurance company stating the buy-back amount and the year to fill (2025).
- 4
Pay the 2026 ordinary contribution AND the buy-back
You must pay the 2026 ordinary contribution in full (max. CHF 7,258) in addition to the buy-back. Art. 7a para. 1 lit. c OPO 3 requires it.
- 5
Credit the account by 31 December 2026
The day the pillar 3a account is credited is decisive. Aim for 24–27 December at the latest to absorb banking delays.
- 6
Keep supporting documents
Keep the provider's confirmations (ordinary contribution + buy-back) — they will be attached to your 2026 tax return, and the tax authority may request them for 10 years.
Frequently asked questions
No. The transitional provision of the amending ordinance of 6 November 2024 explicitly excludes gaps preceding entry into force (1.1.2025). Only years from 2025 onward are eligible, within a rolling 10-year window.