Pillar 3a Buy-Ins: How Do They Work?

Starting in 2025, tied individual retirement provision (Pillar 3a) is changing with a landmark new measure: the ability to buy back unpaid contributions. This new option offers a valuable lever for tax optimization and retirement planning for working individuals in Switzerland.
Third-Pillar Buyout

Pillar 3a Buy-Ins at a Glance

What Is a Pillar 3a Buy-In?

The buy-in allows you to make retroactive contributions that you were unable to make in previous years, up to the applicable annual limit. This measure is similar to the one already available in the 2nd pillar, but it is new for pillar 3a.

Conditions

The measure comes into effect in 2025, but the first buy-ins can only be made from the 2026 tax year to fill a contribution gap dating back to 2025.

In addition, buy-ins are only possible for years after January 1, 2025, with retroactive contributions limited to a maximum of 10 years. Any contribution gap from 2024 or earlier therefore cannot be filled.

Who Can Buy Back Contributions Into Pillar 3a?

Anyone eligible for a Pillar 3a can buy back contribution years. In short, you'll need to:

What Is the Maximum Amount for a Buy-In?

Each year, a person can buy in a maximum of one "small contribution" — CHF 7,258 (the amount in effect for 2025 and 2026) — on top of their ordinary annual contribution. This ceiling is the same whether you're an employee or self-employed without a 2nd pillar.

Tax Advantages

The buyback is fully deductible from taxable income, just like the standard annual contribution. This can represent a significant tax saving, especially for individuals with a high marginal tax rate.

Pillar 3a Contribution Limits

In 2026, it is possible to contribute the following amounts to tied private pension plans:

Amounts paid into pillar 3a can be deducted from taxable income, making it a recognized tax optimization tool.

Frequently Asked Questions

What is a Pillar 3a buy-in?

A Pillar 3a buy-in lets you make up for years in which you didn't pay the maximum allowed contribution. Starting in 2026, you'll be able to retroactively pay up to 10 years of missing contributions dating back to 2025, up to a limit of CHF 7,258 per year.

Anyone actively working in Switzerland who earned income subject to AHV contributions in the relevant year can make a 3a buy-in, provided they have also paid the maximum permitted amount for the year in which the buy-in is made.

Yes, it is possible to use 3rd pillar A assets to finance a buy-back into the 2nd pillar. However, this transfer is tax-neutral, as it is taxed at a reduced rate upon withdrawal, and then tax-exempt upon contribution.

No. Buybacks are limited to once per year, corresponding to a single missing year.

Disclaimer: The information presented in this article is provided for informational purposes only. It does not constitute personalized financial advice. Investment and retirement planning decisions should be evaluated based on your personal situation. An individualized assessment is essential.

Written by:

Claire Fivaz

Claire Fivaz is an IAF-certified advisor in insurance, retirement planning, and wealth management, registered with FINMA (No. F01518014) and a member of the Romandy Association of Financial Intermediaries (ARIF, No. 19065). With several years of experience in individual and occupational pension planning in Switzerland, she supports her clients with retirement planning and financial wealth management. She also holds a Bachelor's degree in International Business Management from HEG Geneva.
Table of contents

Optimize My Retirement Planning

Book a free introductory consultation to review your retirement planning.