Pillar 3a when you are taxed at source
Pillar 3a is the easiest deduction to obtain: you decide the amount, and it comes off your taxable income franc for franc. But as long as you are taxed at source, it gives you nothing back. Here is why, and on what conditions that changes.
Updated 2026-08-17
Pillar 3a is tied individual pension provision: an account or a policy you fund freely, locked until a few years before retirement age, and whose payments are deducted from taxable income. It is the only deduction you steer entirely yourself — the others depend on your commute, your family or your employer.
Someone still has to apply that deduction, however. Your employer does not: they withhold the tax according to a cantonal tariff that completely ignores your payments. That is the starting point of this page, and it surprises thousands of B permit holders every year.
What the law allows you to pay in
The annual ceiling depends on a single question: do you contribute to a pension fund? An employee affiliated to the second pillar falls under the lower ceiling; a self-employed person without a pension fund falls under the higher one, itself limited to a fraction of their earned income.
| Deduction | 2026 amount |
|---|---|
| Pillar 3a, with a pension fundThe case for almost all employees | up to CHF 7'258 |
| Pillar 3a, without a pension fundSelf-employed and non-affiliated employees, within the limit of a share of their earned income | up to CHF 36'288 |
These amounts are those of the direct federal tax, and the cantons take them over unchanged: pillar 3a is one of the rare items where the ceiling does not vary from one canton to another. What does vary is what the deduction earns you — it is worth your marginal rate, so more in Geneva than in Zug.
One condition precedes everything else: you must have received income subject to AHV during the year. Without earned income, no payment is admitted, and a payment made nonetheless will have to be reversed with the institution.
Why the deduction only works under ordinary taxation
The withholding tariff builds in flat rates: a share of professional expenses, a share of insurance premiums, family allowances. That list is closed, it is the same for everyone, and individual pension provision does not appear in it. The legislator made that choice for a simple reason: an employer has no business knowing their employees’ savings decisions.
Two procedures allow you to intervene after the fact, and only one serves here. Recalculation of the withholding tax corrects a tariff or family-status error: it lets in no new deduction. Subsequent ordinary taxation replaces the flat rate with a full tax return, and only there is your 3a certificate taken into account. The comparison of the two regimes sets out what each one covers.
31 December, and nothing after
The payment counts for the year in which it is credited to the pension account, not the year in which you order it. A transfer initiated on 30 December from a third-party bank may arrive on 2 January: it will be deductible in the following year, whatever your intention.
Institutions publish their receipt deadline every autumn, generally in the last week of December. Take it seriously: it is a commercial deadline, but it produces a definitive tax effect.
The ceiling is neither transferable nor divisible beyond the year: what you do not pay in is lost — subject to the new reservation of retroactive buy-backs.
Retroactive buy-backs, new in 2026
Since 1 January 2026 it has been possible to fill in, after the fact, the years in which you did not pay the maximum. The measure stems from a revision of the ordinance on tied individual pension provision; the official explanations appear on the Federal Social Insurance Office website.
The mechanism is tightly framed, and each of these conditions rules people out:
- Retroactivity covers ten years at most, and 2025 is the first year that can be filled in. Earlier gaps remain definitively closed.
- You must have received income subject to AHV during the year you are filling in and during the year in which you make the buy-back.
- The ordinary contribution for the current year must first have been paid in full. The buy-back is added, it does not replace.
- The buy-back is made in a single payment per year filled in, and is capped at the ordinary contribution of an employee affiliated to a pension fund.
- The buy-back is deducted from the taxable income of the year in which it is paid — so, for you, only if that year is subject to ordinary taxation.
The withdrawal trap
The money paid in is locked. It only becomes available again during the five years preceding the AHV reference age, or in a closed list of situations: purchase of a home you live in, definitive departure from Switzerland, moving to self-employment, full disability, buy-back into a pension fund. No other reason opens the account, however urgent.
On withdrawal, the capital is taxed — separately from the rest of your income, at a reduced rate, but it is taxed. And it is taxed even if you were never able to deduct the payments. That is the scenario to avoid at all costs: contributing for years under the withholding regime, never requesting the TOU, then paying the exit tax on capital that saved you nothing on the way in.
A final calendar point: withdrawals staggered over several years, from several accounts, are lighter in tax terms than a single withdrawal, since the capital tariff is progressive. That is a common reason for opening two or three accounts rather than one — a decision to be taken at opening, because an account cannot be split.
The steps, in order
- 01
Estimate before paying in
A 3a payment is of tax interest only if the TOU is favourable to you. Do the calculation in the autumn, with the current year’s salary and your municipality — see the canton pages.
- 02
Pay in before 31 December
Credit date, not order date. Keep the debit advice: it does not replace the certificate, but it settles an argument about the date.
- 03
Ask for the tax certificate
It arrives in January or February. It is the only document the administration accepts, and it is systematically requested for this item.
- 04
File the TOU request before 31 March
A forfeiture deadline, with no possible extension. The request is irrevocable and commits the following years — see what it commits exactly.
- 05
Carry the amount over into the tax return
Pillar 3a is entered among the general deductions, with the other items detailed in the deductions guide.
Frequently asked questions
I paid into a 3a for three years without ever requesting the TOU. Can I recover anything?
Only for the years still within the deadline, that is, until the 31 March following each of them. Earlier years are closed: the payment stays in your pension account, but the deduction is lost. It cannot be made up, and that is the reason this page exists.
Can I pay into a 3a if I only worked a few months in the year?
Yes. The annual ceiling is not pro-rated: as soon as you have received income subject to AHV, you may pay in the maximum. It is the opposite of the meal and travel flat rates, which shrink with the number of days worked.
Can my spouse and I each pay in the maximum?
Yes, provided each of you receives income subject to AHV and has their own account. There is no joint 3a account. Under ordinary taxation, the two deductions add up on the couple’s return.
Is it better to pay into a 3a or to buy into my pension fund?
Both are deductible, but the second-pillar buy-back has no fixed annual ceiling and targets a pension gap calculated by the fund. It is often more powerful over one year, and more rigid afterwards. The 3a remains more flexible and is steered alone. Both go through ordinary taxation in any case.
Can a retroactive buy-back fill in a year spent abroad?
No. The buy-back presupposes income subject to Swiss AHV during the year being filled in. A year outside the AHV system is not a gap within the meaning of the ordinance, but a year without entitlement.
Is the 3a declared as wealth?
No. As long as the assets are locked, they escape wealth tax and the return escapes income tax. It is an advantage that persists even in the years when you cannot deduct the payment — without making up for the lost deduction.
Read next
- Withholding tax or ordinary taxation: what really changesTwo mechanisms for the same tax. Who levies it, when, on what basis, and what switching to ordinary taxation changes for your cash flow.
- New to Switzerland: what awaits you on the tax sideB permit, deduction from salary, an incomplete first year, automatic switch: how Swiss tax works for someone who has just arrived.
- B permit deductions: what withholding tax does not give backTravel costs, meals, pillar 3a, childcare: the deductions the withholding tariff ignores, with the 2026 federal ceilings and the steps to follow.
- Deductible professional expenses, item by itemCommuting, meals, training, tools: what really is deductible, the federal ceilings in force, and when the flat rate beats actual expenses.
- Subsequent ordinary taxation, explained in fullWho may request the TOU, who is obliged to, until when, and why the decision is irreversible. The reference guide for B permit holders.
- When ordinary taxation costs you moneyThe TOU request cannot be withdrawn and commits the following years. Wealth, foreign income, an expensive municipality: the profiles that lose money.
- Reading your salary certificate, figure by figureThe Lohnausweis explained box by box: where to find the net salary, the withholding tax, and the only two figures needed to estimate your savings.