SwissExpatTax

Tax guides for expats in Switzerland: Quellensteuer, Pillar 3a, double taxation treaties and tax returns explained.

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Expat Life Pillar 3a Quellensteuer Tax Returns

Latest articles

Pillar 3a · 5 min · 15 Nov 2026

Missed a Swiss Pillar 3a contribution in 2025? How to catch up in 2026

The new 3a catch-up rule, step by step with your provider: what to pay first, how much you can buy back, a worked example and the paperwork to keep.

Tax Returns · 8 min · 5 Nov 2026

Swiss DA-1: preparing a foreign dividend tax credit claim

Separate foreign withholding from Swiss tax, organise dividend statements and identify the documents and questions needed before completing a DA-1 claim.

Tax Returns · 7 min · 26 Oct 2026

Swiss Tax Residency Certificate: How to Get One

What a Swiss tax residency certificate (Ansässigkeitsbescheinigung) is, who issues it, how to order it, and why a Wohnsitzbestätigung is not the same.

Pillar 3a · 5 min · 17 Sept 2026

Pillar 3a Beneficiary Order in Switzerland: What Changes on 1 June 2027

From 1 June 2027, people in blended Swiss families can name children as first-priority Pillar 3a beneficiaries — even while married. What changes and why.

Expat Life · 10 min · 11 Mar 2026

Swiss Tax Deadlines 2026

All Swiss tax deadlines for 2026: Quellensteuer correction, NOV filing, ordinary tax return, Pillar 3a contribution deadline and what happens if you miss them.

Expat Life · 12 min · 10 Mar 2026

Double Taxation: Switzerland–Spain Guide

How the Switzerland-Spain double taxation treaty works for salary, pensions, dividends and rental income, and how EU expats avoid paying twice.