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7 min read·Last updated: 2026-04-07·Employees · Pension gaps · Tax optimisation

Pension fund buyback: tax benefits of the 2nd pillar

How voluntary buyback into the second pillar works, what the limits are, the tax benefits and the impact on your tax return.

2nd pillar buyback: an underestimated opportunity

The Swiss pension system is based on three pillars. The second pillar — mandatory occupational pension provision (LPP/BVG) — is a fundamental component of retirement coverage for employees. However, many insured individuals have gaps in their retirement savings, often without knowing it.

Voluntary pension fund buyback allows you to close these gaps by making additional contributions, while obtaining a significant tax advantage: the amount paid is fully deductible from taxable income in the year of payment.

This guide explains in detail who can make a buyback, how to calculate the potential, what the regulatory limits are and how to plan payments to maximise the tax benefit.

What is a pension fund buyback

A buyback (Einkauf / rachat) is a voluntary payment that an insured person makes into their pension fund to close the gap between their actual retirement assets and the maximum regulatory assets. This difference is called a 'pension gap' (Vorsorgelücke / lacune de prévoyance).

Gaps typically arise when: you started working in Switzerland at a later age, you had a period of unemployment, you switched from self-employment to employment, you went through a divorce with transfer of LPP assets, or when your salary has increased significantly over time without retroactive adjustment of contributions.

Practical example

Marco, 45, arrived in Switzerland at age 30 and earns CHF 120,000. His pension certificate shows retirement assets of CHF 180,000 and maximum regulatory assets of CHF 310,000. His pension gap — and therefore his buyback potential — is CHF 130,000.

Who can make a buyback

Buyback is available to various categories of insured persons, provided the regulatory conditions are met:

  • Employees affiliated with a Swiss pension fund with documented pension gaps on their pension certificate
  • Workers who moved to Switzerland from abroad and have not accumulated full LPP contributions
  • Individuals who have returned to work after a period of inactivity (e.g. parental leave, illness, education)
  • Workers whose salary has increased over time, creating gaps relative to the maximum regulatory assets
  • Divorced spouses who transferred part of their LPP assets to their former spouse and wish to rebuild their capital

Tax benefits of buyback

Pension fund buyback is one of the most effective tax optimisation tools available to Swiss taxpayers. Here are the main advantages:

1

Full deduction from income

The entire buyback amount is deductible from taxable income for federal direct tax, cantonal tax and municipal tax in the year the payment is made.

2

Progressive rate reduction

Since the Swiss system is progressive, a significant buyback can move the taxpayer into a lower tax bracket, generating a tax saving more than proportional to the amount paid.

3

Tax-free returns during accumulation

Capital in the pension fund grows tax-free: returns (interest, investment gains) are subject to neither income tax nor withholding tax during the accumulation phase.

4

Preferential taxation on withdrawal

At retirement, the capital is taxed separately from other income, at a reduced rate (typically 1/5 of the ordinary rate at the federal level). Annuity and lump sum enjoy different tax treatments.

Tax saving example

An employee with taxable income of CHF 120,000 in the Canton of Zurich who makes a buyback of CHF 30,000 can save approximately CHF 9,000–10,500 in taxes in the year of payment (considering federal, cantonal and municipal tax). The actual saving depends on the canton, municipality and personal situation.

Limits and rules of buyback

Buyback is not unlimited and must comply with specific regulatory and statutory conditions:

Maximum amount = pension gap

The buyback amount can never exceed the gap shown on the pension certificate. This amount is calculated by the pension fund based on the regulations, the insured person's age and years of contributions.

Pillar 3a deduction for newcomers

Those who move to Switzerland from abroad and have never been affiliated with a Swiss pension fund can only make buybacks in the first 5 years up to 20% of the insured salary per year. From the sixth year onwards, the full gap can be bought back.

3-year lock-in on lump sum withdrawal

After a buyback, the capital cannot be withdrawn as a lump sum for the following 3 years. If a withdrawal is made within 3 years, the tax deduction is retroactively annulled.

No buyback if there is an outstanding WEF withdrawal

If the insured person has made an early withdrawal for home ownership promotion (WEF/EPL), they must first fully repay this amount before making new deductible buybacks.

Mandatory regulatory verification

Each pension fund has its own regulations. The buyback potential is shown on the annual pension certificate. Before proceeding, written confirmation must be requested from your pension fund.

Warning: if you make a lump sum withdrawal within 3 years of a buyback, the tax authority will reclaim the tax benefit obtained, plus default interest. Plan carefully.

How to make a buyback: step-by-step procedure

1

Check your buyback potential

Consult your annual pension certificate (Vorsorgeausweis / certificat de prévoyance). The 'buyback potential' or 'maximum gap' entry shows the maximum amount you can contribute. If you cannot find it, contact your pension fund directly.

2

Request confirmation from your pension fund

Contact your pension fund to request written confirmation of the maximum buyback amount and bank details for the payment. Some funds provide a specific form to complete.

3

Decide the amount and timing

You can buy back the entire gap in a single payment or split it across multiple years. Splitting across several years is almost always more tax-efficient due to the progressive tax system.

4

Make the payment

Transfer the amount to the pension fund's account by 31 December of the tax year in which you want the deduction. Keep the payment receipt and the pension fund's confirmation.

5

Include the deduction in your tax return

In your tax return, enter the buyback amount in the section for LPP/occupational pension contributions. Attach the pension fund confirmation and payment receipt as supporting documents.

When to buy back: timing strategies

The timing of your buyback is crucial to maximise the tax benefit:

Split across multiple years

Due to the progressive tax system, it is almost always more advantageous to split the buyback over 3–5 years rather than paying the entire amount at once. This reduces taxable income across multiple tax periods, resulting in a higher overall saving.

High-income years

Buyback is particularly advantageous in years when income is higher than usual — for example due to a bonus, a gratification, the sale of an asset or a taxable inheritance. In these years, the marginal tax rate is higher and the tax saving is maximised.

At least 3 years before retirement

If you plan to withdraw the capital at retirement (instead of an annuity), the last buyback must take place at least 3 years before. If you buy back and withdraw within 3 years, the deduction is retroactively annulled by the tax authority.

Practical tips for pension fund buyback

  • Check your pension certificate every year: the gap changes with salary increases and regular contributions
  • Split the buyback over multiple years to take advantage of progressive taxation — the overall saving is almost always higher
  • Coordinate your LPP buyback with pillar 3a contributions: these are cumulative (not alternative) deductions that add up
  • If you arrived in Switzerland from abroad, remember the 20% annual limit in the first 5 years of affiliation
  • Do not buy back if you plan to withdraw the capital within 3 years — you would lose the tax benefit plus default interest
  • In the case of divorce with LPP transfer, the buyback allows you to rebuild capital without additional limits
  • Use AccountEX to track pension contributions and deductions throughout the year, making your tax return simpler

Related guides

LPP buyback is part of overall tax planning. Learn how to file your tax return step by step:

Guide to filing your Swiss tax return →

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