Retirement Planning for Expats in Switzerland: AHV, Pension Fund, and Pillar 3a

Retirement planning is a key concern for expats in Switzerland. Alongside questions about taxes and residence permits, social security in old age plays an important role. The Swiss pension system rests on three pillars: the state old-age insurance (AHV), occupational pension funds (Pensionskasse), and private pension savings (Pillar 3a and 3b).

Expats frequently ask: What contributions are required? What happens to pension savings when leaving Switzerland? And what tax advantages does private pension saving offer? This article provides a comprehensive overview (as of 2025).

Important note: All figures stated apply to the 2025 tax year. Contribution rates and thresholds are adjusted regularly. For individual questions, consulting a pension or tax professional is recommended.

The Three-Pillar System

The Swiss pension system is built on three complementary pillars:

• First Pillar (AHV/IV/EO): State old-age, survivors' and disability insurance – compulsory for all persons working or residing in Switzerland.
• Second Pillar (Pensionskasse / BVG): Occupational pension – compulsory for employees earning more than CHF 22'680 per year (2025).
• Third Pillar (Pillar 3a and 3b): Private, voluntary savings – with tax advantages (3a, tied) or maximum flexibility (3b, unrestricted).

First Pillar: AHV for Expats

Contribution Obligation and Contribution Rate

All persons working in Switzerland – including expats holding an L or B permit – are compulsorily insured under AHV/IV/EO. The total contribution rate is 10.6% of gross salary (AHV: 8.7%, IV: 1.4%, EO: 0.5%), split equally between employer and employee. Each party pays 5.3%. In addition, unemployment insurance (ALV) contributions of 2.2% apply, also split equally.

Pension Entitlement and Contribution Years

To receive a full AHV pension (Scale 44), 44 contribution years without gaps are required. Since the AHV 21 reform (effective 1 January 2024), this applies equally to men and women. Special transitional rules apply to women born between 1961 and 1963.

Expats who work in Switzerland for a shorter period receive a proportional pension (partial pension, Scale 1–43). Each missing contribution year reduces the pension by approximately 2.3% (1/44).

AHV pension 2025:

• Minimum pension: CHF 1'260 per month (Scale 44, lowest income bracket)
• Maximum pension: CHF 2'520 per month (Scale 44, income from CHF 88'200/year)
• New since 2024: 13th AHV pension – all recipients receive a supplement in December equal to 1/12 of the annual pension.

Reimbursement and Coordination upon Departure

SituationRuleDeparture to EU/EFTA countrySwiss and EU contribution periods are combined; pension is paid proportionally. No right to reclaim contributions.Departure to third country without agreementAHV contributions generally cannot be reclaimed. AHV pension is paid abroad once entitlement arises.Departure to third country with social security agreementThe agreement governs coordination; pensions are coordinated or exported accordingly.

Important: AHV contributions generally cannot be paid out as a lump sum upon departure (unlike pension fund assets). Expats moving to EU/EFTA states must wait until retirement age to receive their AHV pension.

Second Pillar: Pension Fund (BVG)

Compulsory Insurance

Employees earning more than CHF 22'680 per year (entry threshold 2025) are compulsorily insured in a pension fund – provided the employment contract lasts longer than three months. The employer must cover at least half of the contributions.

• Risk cover (death, disability): from 1 January after the 17th birthday
• Retirement savings: from 1 January after the 24th birthday

Benefits of the Pension Fund

• Old-age pension (or lump-sum capital withdrawal)
• Disability pension in the event of incapacity to work
• Survivors' pension for spouses and children

Portability: What Happens on Departure or Job Change?

When leaving a pension fund (job change, departure), a vested benefit (Freizügigkeitsguthaben) is created. This must be either:

• transferred to the new pension fund (when changing jobs within Switzerland),
• transferred to a vested benefits account (Freizügigkeitskonto) or vested benefits policy (during temporary unemployment or when leaving Switzerland).

Pension fund payout upon departure:

SituationRuleDeparture to EU/EFTA countryThe mandatory BVG portion remains locked in Switzerland on a vested benefits account until retirement (age 65). The supra-mandatory portion can be paid out.Departure to third countryIn most cases, a cash payout of the entire balance is possible.

Note on BVG reform: Swiss voters rejected the BVG reform in September 2024. The existing system (fixed entry threshold, fixed coordination deduction of CHF 26'460) therefore remains in force.

Tax Treatment upon Payout

Pension fund payouts upon departure or at retirement are subject to a reduced withholding tax (taxed separately from other income). In many cases, this withholding tax can be fully or partially reclaimed based on the applicable double taxation agreement (DTA) – depending on the country of residence.

Third Pillar: Private Savings (Pillar 3a and 3b)

Pillar 3a: Tied Pension Savings

Pillar 3a is a tax-privileged savings vehicle. Contributions can be deducted from taxable income.

Maximum deductions 2025:

GroupMaximum amount 2025Employees with a pension fundCHF 7'258Self-employed without a pension fundCHF 36'288 (max. 20% of net self-employment income)

Investment options for Pillar 3a:

• Savings account (3a bank account)
• Securities / pension fund solution
• Life insurance (with surrender value)

Pillar 3a payout:

• Earliest: 5 years before ordinary retirement age (AHV age 65)
• Latest: Upon reaching retirement age (or up to 5 years later if still working)
• Early payout possible upon: departure abroad, purchase of owner-occupied property, commencement of self-employment, disability
• Taxation: Separate taxation at a reduced pension rate (1/5 of ordinary tariff, varies by canton)

Tip for expats: Holding multiple Pillar 3a accounts or policies enables staggered payouts and can reduce the tax burden on withdrawal.

Pillar 3b: Unrestricted Private Savings

Pillar 3b covers all other savings and investment forms (bank accounts, securities, real estate, ordinary life insurance). It carries no specific tax advantages but offers maximum flexibility.

Special Considerations for Expats

International Social Security Agreements

Switzerland has concluded social security coordination agreements with numerous countries. These prevent double contributions and ensure pension entitlements can be exported. Expats should check at an early stage whether their home country has such an agreement with Switzerland.

EU/EFTA: For EU and EFTA nationals, the bilateral agreements on free movement of persons provide for full coordination of social security systems.

Withholding Tax Obligation for Expats without a C Permit

Expats without a settlement permit (C permit) are generally subject to withholding tax (Quellensteuer) in Switzerland. Their employer deducts income tax directly from their salary. To claim pension deductions (particularly Pillar 3a), withholding taxpayers must actively request a subsequent ordinary assessment (Nachträgliche ordentliche Veranlagung, NOV) if their income exceeds CHF 120'000 – or voluntarily at lower income levels.

Mobility and Documentation

Expats who have worked in multiple countries should:

• Keep all social insurance records and contribution statements from every country of employment.
• Regularly order an individual AHV account statement (IK statement) from the relevant compensation office.
• Transfer vested benefit assets to a vested benefits account promptly – unclaimed balances are transferred to the substitute institution (Auffangeinrichtung BVG).

Practical Examples

Example 1: EU Expat with Five Years' Residence

A German expat works five years in Zurich (2020–2025). On returning to Germany:

• AHV: The five Swiss contribution years are coordinated with the German pension insurance for satisfying waiting periods. Once retirement age is reached, Switzerland pays a proportional AHV partial pension (5 of 44 years ≈ 11.4% of the full pension).
• Pension fund: The supra-mandatory balance can be paid out immediately. The mandatory balance remains locked in a vested benefits account in Switzerland and cannot be paid out early while he is compulsorily insured in an EU state.
• Pillar 3a: Can be dissolved and paid out immediately upon departure. Withholding tax varies by canton; a refund claim under the Germany–Switzerland DTA is worth examining.

Example 2: US Expat in Basel

An American woman works three years in Basel and then returns to the USA.

• AHV: The USA does not have a comprehensive EU-style social security agreement with Switzerland. She is entitled to a proportional AHV pension from retirement age (also exportable to the USA).
• Pension fund: As the USA is not an EU/EFTA member, she may withdraw the entire pension fund balance (mandatory and supra-mandatory) upon departure. The payout is subject to Swiss withholding tax; a refund claim under the Switzerland–USA DTA should be examined.
• US tax implications: In the USA, Swiss pension fund assets are generally taxable as income. Professional US tax advice is strongly recommended.

Common Mistakes and Tips

Common Mistakes

• Forgetting vested benefit assets: Expats who leave Switzerland without actively transferring their pension fund assets to a vested benefits account end up with the substitute institution – the assets remain available but are easily overlooked.
• Not dissolving Pillar 3a: Many expats forget to claim their Pillar 3a balance upon departure – even though early payout is permitted upon definitive departure and is often tax-efficient.
• Failing to document AHV contribution years: Missing years can significantly reduce the future pension.
• Not reclaiming withholding tax on pension fund payouts: Many people are unaware that the applicable DTA may allow a refund claim.
• Assuming all assets are paid out automatically upon departure: This only applies under certain conditions (third countries, supra-mandatory portion).

Tips for Expats

• Order your individual AHV account statement (IK statement) regularly and check it for completeness.
• Open a Pillar 3a account early and contribute regularly – from your first year of work in Switzerland.
• Open multiple Pillar 3a accounts to stagger payouts across different years and reduce the tax burden.
• Check the double taxation agreement between your home country and Switzerland – especially for pension fund and Pillar 3a payouts.
• Engage a pension and tax advisor with international expertise at an early stage.
• Park vested benefit assets in a dedicated account (not with the substitute institution) – ideally in a vested benefits policy or with an equity component for better returns.

Conclusion

The Swiss pension system provides expats with a solid basic framework – but it requires active planning. Those who know their AHV contribution years, take account of international agreements, and plan ahead can ensure their pension assets are used to best advantage. Pillar 3a in particular offers one of the most attractive tax levers available to expats during their time in Switzerland.