Pillar 3a retroactive top-up 2026: pay in missed years

Since 1 January 2025 a new rule applies to your private Pillar 3a savings: if you pay in less than your maximum in a year, you can close that gap later. The first Pillar 3a retroactive top-up is possible in 2026, for the gap year 2025. Per year you can pay in at most the small maximum, which is CHF 7'258 for 2026, on top of your ordinary contribution. Only gaps from 2025 onward can be bought back, within ten years, and only if you have earned income subject to AHV contributions in both the gap year and the year you pay.

What changed on 1 January 2025

For decades, Pillar 3a had a strict use-it-or-lose-it rule: if you did not pay in during a calendar year, that year's tax deduction was gone for good. An amendment of the ordinance governing Pillar 3a (BVV 3) of 6 November 2024, in force since 1 January 2025, changed that: the new Article 7a allows a retroactive purchase, often called a top-up or "Nachzahlung". You can find the official ordinance text and the explanatory report of the Federal Social Insurance Office (BSV) under Sources below.

Two points matter most in practice. First: only gaps that arise from 2025 onward can be bought back. Years up to and including 2024 can never be topped up, no matter how large the gap. Second: because a gap can only be closed in a later year, the first top-ups are possible in 2026, for the gap year 2025.

Who can use the Pillar 3a retroactive top-up

The Pillar 3a retroactive top-up is tied to earned income in both directions. The ordinance sets these conditions:

• In the gap year, you had earned income subject to AHV contributions, so you would have been allowed to pay into Pillar 3a that year.
• In the year of the top-up, you again have AHV-liable earned income.
• You have already paid the full ordinary contribution for the payment year; only then can a retroactive amount be added on top.
• The gap year lies at most ten years back.
• You have not yet drawn old-age benefits from Pillar 3a and are still entitled to pay in at all in the payment year (at most five years beyond the reference age, and only while you remain gainfully employed).

If, for example, you spent a year on an unpaid break with no earned income at all, that year cannot be topped up: without AHV-liable earned income in the gap year, the year is not purchasable.

How much you can pay in

Your gap for a year is the maximum that applied to you in that year minus what you actually paid. The top-up in any single year is capped at the small maximum, the limit for employed people with a pension fund (CHF 7'258 for 2026). That cap also holds for the self-employed, whose ordinary limit is higher. The Pillar 3a maximum calculator shows your personal maximum, with and without a pension fund.

The one-purchase rule matters too: each gap year can be closed by one single top-up only. A partially closed gap year cannot be filled up later. One payment may close several whole year-gaps at once, but never more than the annual cap in total. A larger total gap can therefore only be closed over several payment years.

A worked example with the 2026 figures

Suppose you paid nothing into Pillar 3a in 2025 and 2026, but were employed and had AHV-liable earned income in both years. For simplicity we use the 2026 small maximum of CHF 7'258 for both years; legally, the limit in force in each gap year determines the size of the gap, while the cap on the top-up follows the limit of the year you pay.

• Gap 2025: CHF 7'258. Gap 2026: CHF 7'258. Total gap: CHF 14'516.
• Per payment year, the top-up is capped at that year's small maximum, so CHF 7'373 in 2027, on top of the ordinary contribution. The total gap cannot be closed in one year.
• One possible sequence: in 2027 you pay the full ordinary 2027 contribution and close the 2025 gap year with a top-up of CHF 7'258. In 2028 you repeat this for the 2026 gap year.
• After two payment years both gaps would be closed, each with exactly one top-up.

And the tax? The topped-up amount is deductible from taxable income in the year you pay, just like an ordinary contribution. How much that saves depends on your marginal tax rate, meaning federal, cantonal and communal tax together with your personal deductions. As an estimated range, with purely illustrative rates: at a marginal rate of 10%, a top-up of CHF 7'258 could reduce the tax bill by around CHF 726; at 32%, by around CHF 2'323. This is not a promise; the only decisive figure is the assessment issued by your cantonal tax administration. Check your own gap years and your estimated range with the free Pillar 3a top-up calculator.

When a top-up may be less suitable

A top-up is not an automatic yes. Points that could weigh against it in an individual case:

• Low income in the payment year: the deduction is worth less the lower your marginal rate. In a low-income year the effect could be much smaller than in a high-income year.
• Locked-up money: what sits in Pillar 3a stays tied up until withdrawal, ordinarily between age 60 and 70, earlier only for specific reasons. If you may need the funds sooner, that lock-up could be a real constraint.
• Partial top-ups: because a gap year can be closed only once, a small partial top-up could seal off the rest of that year's gap for good. It may be worth choosing a moment when the gap can be closed in full.
• An upcoming withdrawal: once you have drawn old-age benefits from Pillar 3a, no further top-ups are possible.

At withdrawal, the Pillar 3a balance is taxed once, separately from other income at a reduced rate. How multiple accounts and staggered withdrawals can play out is covered in staggering withdrawals; the basics of the annual maximum are in the overview Pillar 3a in 2026: the maximum and the new catch-up.

Common questions

Can I pay in Pillar 3a contributions I missed before 2025?

No. The retroactive top-up only covers contribution gaps that arise from 2025 onward. Years up to and including 2024 cannot be bought back.

How much can I pay in retroactively in 2026?

In 2026, only the gap year 2025 is purchasable. You can pay in at most your 2025 gap, capped at the small maximum of CHF 7'258, and only on top of your full ordinary 2026 contribution.

Do I need earned income to use the retroactive top-up?

Yes, twice over: you need AHV-liable earned income in the gap year you want to fill and in the year of the top-up.

How long does a gap year stay purchasable?

Ten years. The 2025 gap year, for example, remains purchasable until 2035, provided the other conditions are met in the payment year.

Does a Pillar 3a retroactive top-up reduce my taxes?

The topped-up amount is deductible from taxable income like an ordinary contribution. How much that saves depends on your marginal rate, so it is an estimated range, not a fixed figure. Decisive is the assessment of your cantonal tax administration.

Sources

• BVV 3 (SR 831.461.3), Art. 7a, inserted by the amendment of 6 November 2024 (AS 2024 622), in force since 1 January 2025: consolidated text on Fedlex (German; French and Italian versions available on the same page).
• Federal Social Insurance Office (BSV), explanatory report on the amendment of BVV 3 (introduction of purchases into Pillar 3a), November 2024: explanatory report (PDF, German).
• Small Pillar 3a maximum for 2026 (BVV 3 Art. 7 para. 1 let. a): CHF 7'258 per the pension figures for 2026 published by the BSV and the Federal Tax Administration (ESTV).

The top-up in your own plan

A top-up does two things at once: it lowers your taxable income in the year you pay, and it raises the balance that keeps working for you until retirement. SORVA connects both in a year-by-year picture of your money, calculated with the official Swiss rules on your own numbers, not averages. That way you can judge what closing a Pillar 3a gap could mean for your tax today and your savings at retirement, and the estimated one-off tax at the later withdrawal sits in the same plan. See what a closed Pillar 3a gap could change for you: create your plan at sorva.ch, with a free plan to start.

Projections are estimates based on your inputs and current Swiss regulatory parameters. They do not constitute financial advice. Actual results may differ.

Educational information, not financial advice. Figures are for 2026 and may change.