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Pension Fund Lump Sum: How to Optimise Taxes on Withdrawal

The complete 2026 guide: staggering, canton comparison, the 3-year lock-in after voluntary buy-ins — and how to save tens of thousands of francs.

By Thierry Borgeat · Reviewed by Patrick Rissi, CFA and Florian Jauch, CFA · Last updated April 2026 · 18 min read

You're approaching retirement — or planning it long-term. One of the biggest financial decisions of your life is coming up: should you take your pension fund capital as an annuity or as a lump sum? And if lump sum, how do you do it without paying unnecessary tax?

The answer can mean tens of thousands of francs. For large pension balances, often over CHF 100'000. Because the capital withdrawal tax varies dramatically — depending on your canton, the withdrawal amount, your marital status, and timing. And there are pitfalls that can destroy an otherwise clever plan. The biggest: the 3-year lock-in period after a voluntary pension fund buy-in, Article 79b paragraph 3 BVG. Anyone who violates it loses the entire tax benefit of the buy-in — retroactively.

This guide explains tax optimisation on lump-sum pension withdrawal systematically — with verified 2026 numbers, canton comparison, step-by-step checklist, and the traps you need to know before you withdraw a single franc from your pension fund.

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01How capital withdrawal tax works

When you withdraw capital from your pension fund or Pillar 3a, it's taxed separately from your other income — at a reduced rate. The tax authority treats the withdrawal as a one-time capital payment with its own tariff, the so-called pension tariff (Vorsorgetarif). This tariff is progressive: the higher the amount you withdraw in a single year, the higher the effective tax rate.

Taxation happens at three levels: federal, cantonal, and municipal. The federal rate is the same everywhere. The cantonal and municipal rates vary massively — which makes your place of residence the single most important factor in tax optimisation. Two neighbours living just across a cantonal border can pay CHF 30'000 different tax on the same withdrawal.

Worth knowing: the pension fund reports the withdrawal directly to the tax authority. You receive a separate bill — independent of your regular tax return. The following year's tax return merely reports the withdrawal formally.

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02Annuity or lump sum? The fundamental decision

Before we dive into tax optimisation, the more fundamental question is whether a lump-sum withdrawal is the right choice for you at all. The Federal Tax Administration (ESTV) analysed this question systematically for balances of CHF 500'000, 800'000 and 1'500'000 in its Walti Interpellation 25.3376 analysis.

There is no universally correct answer. But there are clear criteria:

The most common solution is a mix: part as annuity (covers basic needs together with AHV/state pension), the rest as lump sum (for flexibility, larger expenses, inheritance). Most pension funds allow such combinations. Under the BVG mandatory portion, you must be allowed to withdraw at least 25% as a lump sum — many regulations allow up to 100%.

A relevant side note: from December 2026, the maximum AHV (state pension) payment increases thanks to the 13th AHV pension — CHF 2'520 per month for individuals, CHF 3'780 for married couples. Mathematically that's an 8.3% higher annual state pension from retirement onwards. For the annuity-vs-lump-sum decision, this slightly reduces the pressure on the pension fund annuity — because a larger share of basic needs is already covered by the first pillar.

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03The 3-year lock-in after a pension fund buy-in

This is the most dangerous pitfall in pension planning — and it's often underestimated or wrongly explained by bank advisors. Art. 79b paragraph 3 BVG regulates the relationship between voluntary pension fund buy-ins and later lump-sum withdrawals. The rule states:

After a voluntary buy-in to the pension fund, no benefits may be withdrawn from the 2nd pillar in lump-sum form for the next three years.

This sounds like a minor restriction. In practice, it's a minefield. Three Federal Supreme Court rulings have clarified the rule:

If you violate the lock-in, you lose the tax deduction on the buy-in — retroactively. The tax authority opens a supplementary tax procedure. The buy-in is added back up to the amount of the lump-sum withdrawal. If the buy-in was already accepted in a final assessment, the back-tax comes automatically.

An example: in 2024, you make a CHF 100'000 buy-in to your pension fund and save CHF 30'000 in taxes. In 2026, you decide to take CHF 200'000 early from an old vested benefits account. Because the 3-year window is violated, the buy-in is retroactively disallowed. You have to pay back the CHF 30'000 you saved — plus default interest.

How the period is calculated

The lock-in starts on the day of the buy-in and ends exactly three years later, counted in full calendar years. A buy-in on 15 December 2024 allows a lump-sum withdrawal at the earliest on 15 December 2027. What matters is the credit date on your individual pension account.

Exceptions

Exempt from the lock-in are only: (1) re-buy-ins after divorce or legal dissolution of a registered partnership (Art. 79b para. 4 BVG), and (2) buy-ins to finance an AHV bridging pension before regular retirement age. Some cantons (e.g. Bern) also tolerate violations up to an annual buy-in amount of CHF 12'000 — but this is a practice, not a legal exemption.

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04Canton differences: where you pay the least

The differences between cantons are dramatic. The Federal Tax Administration systematically compared all cantonal capitals in its 2025 Walti analysis. A representative sample for a single person withdrawing CHF 500'000 (no church tax, as of 2026, cantonal capitals):

Group	Example cantonal capitals	Tax on CHF 500'000
Cheap	Schwyz, Zug, Appenzell (AR/AI), Nidwalden, Uri	~CHF 22'000 – 28'000
Medium	Lucerne, Schaffhausen, St. Gallen, Glarus, Solothurn	~CHF 28'000 – 38'000
Medium-high	Zurich (post-2022 reform), Bern, Aargau, Graubünden, Thurgau	~CHF 36'000 – 45'000
High	Basel-Stadt, Vaud, Geneva, Neuchâtel, Jura, Valais	~CHF 45'000 – 58'000

Sources: ESTV Walti analysis 25.3376 (May 2025), finpension, Vermögens-Partner AG 2026. Figures are indicative for single, non-denominational persons in the cantonal capital. Actual burden varies by municipality, marital status, denomination, and current tax legislation.

The spread of roughly CHF 35'000 between the cheapest and most expensive cantonal capital at CHF 500'000 makes your place of residence by far the most important single factor. At CHF 1'000'000, according to Vermögens-Partner 2026, the difference exceeds CHF 100'000.

Relocation as an optimisation strategy?

For very large withdrawals (CHF 500'000+), moving to a tax-friendly canton can make financial sense. What matters is your residence at the moment the withdrawal becomes due. Two important caveats: a sham relocation is illegal — tax authorities check your actual centre of life. And relocation has costs too (quality of life, social ties, often higher real-estate prices in low-tax cantons).

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05Zurich 2022: why the canton is now "acceptable"

For decades, Zurich was one of the most expensive cantons for lump-sum pension withdrawals. That changed on 1 January 2022 — and many retirement plans still based on pre-reform numbers are simply wrong.

The reform: the canton of Zurich reduced the theoretical annuity conversion rate used for calculating the capital withdrawal tax from 10% to 5%. In practice, this means the tax is calculated as if the lump sum were paid out as an annuity over 20 years — instead of 10 years, as before. The minimum simple state tax rate of 2% remains.

The impact in numbers, example City of Zurich, CHF 500'000 withdrawal:

Period	Single, no church tax	Married, with church tax
Before reform (2021)	~CHF 56'000	~CHF 42'830
After reform (from 2022)	~CHF 36'000	~CHF 33'200
Saving	~CHF 20'000	~CHF 10'000

Source: ZKB, Vontobel Insights, City of Zurich — data by Vermögens-Partner AG.

The reform helps single taxpayers with withdrawals from CHF 210'000 upwards, and married couples from CHF 370'000. The greatest saving occurs in the CHF 500'000 – 1'500'000 range, where the reduction reaches up to 40%. For small withdrawals (under 200'000), nothing changes — the 2% minimum rate still applies.

In the intercantonal ranking for a CHF 500'000 withdrawal, Zurich moved from rank 24 to rank 11 (single) and from rank 21 to rank 8 (married). Zurich hasn't become a tax haven — but the previous gap to central Swiss cantons has narrowed considerably.

The practical consequence: moving from Zurich to Schwyz or Zug purely for the capital withdrawal tax makes much less sense today for mid-size withdrawals than before 2022. Only at very large withdrawals (over CHF 1'000'000) does the difference become big enough to justify the other costs of relocation.

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06Staggered withdrawals: the most important strategy

By far the most effective optimisation is staggering withdrawals across multiple tax years. The principle is based on progression: CHF 500'000 in a single year is taxed significantly more than five times CHF 100'000 spread over five years.

The size of the effect depends on your canton's progression curve. According to Vermögens-Partner, in Schwyz the tax on a CHF 500'000 withdrawal is roughly 18 times higher than on a CHF 100'000 withdrawal — even though the amount is only 5 times larger. That's the lever staggering exploits.

Concrete example for City of Zurich, single, no church tax, after the 2022 reform:

Scenario	Total withdrawn	Total tax (indicative)
All in one year	CHF 500'000	~CHF 36'000
Staggered over 3 tax years	3 × CHF 167'000	~CHF 25'000 – 28'000
Staggered over 5 tax years	5 × CHF 100'000	~CHF 18'000 – 22'000
Saving (5 vs. 1 year)		~CHF 14'000 – 18'000

Indicative values without warranty. Exact savings depend on municipality, marital status, and current tariff design. In cantons with flatter progression curves, the effect is smaller; in steeply progressive cantons (Basel-Stadt, Vaud), it's larger.

CHF 14'000 – 18'000 saved — purely through timing. In steeply progressive cantons, the saving can be considerably higher.

How to implement staggering in practice

The basic idea: open 4–5 separate Pillar 3a accounts with different providers well in advance. Pay in the annual maximum — in 2026 that's CHF 7'258 for employees with a pension fund — spread across these accounts. From age 60 onwards (earliest 5 years before the reference retirement age), start dissolving one account per year. In the retirement year itself, withdraw the pension fund capital — in a calendar year with no Pillar 3a withdrawal.

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07The max-3-steps rule (Art. 13a BVG)

Since the AHV21 reform came into force on 1 January 2024, there's a new restriction often overlooked in staggering strategies: Art. 13a BVG limits the number of lump-sum partial withdrawals from the 2nd pillar to a maximum of three.

The rule in detail:

1. Three "steps" maximum: you may withdraw your 2nd pillar balance in a maximum of three lump-sum partial withdrawals. After the third step, the remainder must be paid as an annuity.
2. One step = one calendar year: all lump-sum withdrawals from the 2nd pillar in the same calendar year count as a single step. So you can withdraw from multiple pension funds or vested benefits accounts in the same year — it still counts as just one step.
3. Minimum 20% for the first step: the first partial withdrawal must be at least 20% of the retirement benefit. For steps 2 and 3, the regulations can define lower minimums.
4. 365 days between partial retirement steps: between partial retirements (reducing workload + partial withdrawal), at least 365 days must pass.

Pillar 3a accounts don't count towards this limit — the max-3 rule applies only to the 2nd pillar. You can therefore separately dissolve multiple 3a accounts in different years, and this doesn't block pension fund withdrawals.

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08Pension fund and Pillar 3a: never in the same year

One of the costliest mistakes at retirement: withdrawing pension fund capital and Pillar 3a assets in the same tax year. The reason is the addition rule — the amounts are combined and jointly taxed at the progressive pension tariff.

Someone withdrawing CHF 400'000 from the pension fund and CHF 80'000 from Pillar 3a in the same year is taxed on a progression base of CHF 480'000 — significantly more than two separate withdrawals. In the city of Zurich, this mistake easily costs an extra CHF 6'000 – 10'000 in taxes; in more expensive cantons, even more.

The solution:

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09Married couples: the addition rule and how to navigate it

For married couples, a particularly tricky rule applies: in most cantons, all pension withdrawals from both spouses in the same tax year are added together. This includes pension fund capital, 3a withdrawals, and vested benefits from both partners.

Example: partner A withdraws CHF 350'000 from his pension fund in 2026. Partner B simultaneously withdraws CHF 200'000 from hers. The progression base isn't CHF 350'000 and CHF 200'000 separately — it's CHF 550'000 combined. The tax explodes.

The strategy for couples

Create a joint withdrawal plan that spreads both partners' withdrawals across different calendar years. Examples:

• Alternating by year: partner A withdraws in even years, partner B in odd years.
• Alternating by retirement: the partner retiring first takes pension fund capital in their retirement year; the other withdraws the following year.
• December/January trick: partner A in December, partner B in January of the following year. Just days apart — but two tax periods.

Start planning at least 5 years before the first retirement. The earlier you start, the more room for staggering — including through the Pillar 3a accounts.

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10After withdrawal: how to invest the capital

If you decide on a lump-sum withdrawal, a large amount lands in your account — along with the responsibility to invest it sensibly so it lasts 20–30 years. This is the moment when most people make their most expensive mistakes.

The most common post-withdrawal mistakes: leaving everything in a savings account (loss of purchasing power to inflation, ~2% per year), not investing out of fear (the biggest loss is not being invested), or emotionally speculating on individual stocks without a strategy. Capital of CHF 500'000 sitting in a savings account loses roughly CHF 170'000 in real purchasing power over 20 years at 2% inflation — without a single franc being spent.

Professional asset management exists precisely for this situation. It should meet three conditions: diversified, fee-sensitive, long-term oriented. At arvy, the arvy Equity Fund meets these conditions — a concentrated portfolio of around 30 quality companies, managed by CFA charterholders. The founders (Thierry, Patrick, Florian) invest their own money in the same fund. The fund is tradeable through any Swiss bank — you don't need a new account.

Alternatively, you can invest your pension fund capital gradually through a savings plan — via dollar-cost averaging over 6–12 months to reduce timing risk. For a large lump sum, though, historical data shows that immediate investment wins in about two-thirds of cases.

Retirement isn't the end of investing — it's the beginning of a new phase where your money still has to work for you.

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11The tax optimisation checklist

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12Frequently asked questions

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Invest your pension capital professionally

You understand the tax side. The other half of the equation is what you do after the withdrawal. CHF 500'000 in a savings account loses roughly CHF 170'000 in real purchasing power over 20 years at 2% inflation — without a single franc being spent. Professional, diversified investing isn't an option — it's a requirement.

Written by Thierry Borgeat, Co-Founder of arvy, and reviewed by Patrick Rissi, CFA and Florian Jauch, CFA. All three invest their own money in the arvy portfolios. Last updated April 2026.

Disclaimer: This article is for general information and does not constitute personal tax or investment advice. Tax examples are indicative for typical constellations (cantonal capital, non-denominational, age 65) and may vary by municipality, marital status, denomination, and current tax legislation. For exact calculation of your personal situation, use the ESTV Tax Calculator or consult a tax advisor. The legal framework around Art. 79b BVG and Art. 13a BVG is summarised based on Federal Supreme Court rulings 2C_658/2009, 2C_6/2021, and the directives of cantonal tax administrations — it does not replace individual legal advice. arvy is a FINMA-supervised asset manager. Legal notices & disclaimer.