Samstein Advisors | Luxembourg tax returns

CONFIDENCE
IN EVERY TAX RETURN

Expert support for Luxembourg tax returns - focused on your financial well-being and maximizing your benefit.

Luxembourg tax returns, made simpler.

Living or working in Luxembourg and unsure where to start with your tax return? Let Samstein Advisors take care of the paperwork.

We help individuals and families prepare and submit their Luxembourg personal income tax returns, with clear explanations and personal support throughout the process.

Our goal is not just to complete your return, but to help you get the best possible outcome with confidence.

More than tax filing

We help you approach your tax obligations with clarity and confidence, and make the most of every opportunity

Get Started Now

Who We Are

Samstein Advisors is a Luxembourg-based tax advisory firm dedicated to helping individuals navigate their tax obligations with clarity and confidence. We specialize in personal income tax returns, offering tailored support that reflects each client’s unique financial situation.

Our team combines strong technical expertise with a practical, client-focused approach. We understand that taxes can feel overwhelming, which is why we prioritize clear communication, transparency, and efficiency in everything we do.

At Samstein Advisors, we don’t just process tax returns — we build long-term relationships based on trust, reliability, and a genuine commitment to your financial well-being.

Our focus

Employees

We support employees in understanding their tax obligations.

Investors

Tailored tax services for investors navigating tax return complexities.

Property Owners

Assisting rental income recipients with accurate tax filings.

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Luxembourg’s 2028 Tax Reform: What the New Single Tax Class Could Mean for You

For many single taxpayers and dual-income couples, the proposed system could reduce income tax. For couples with one income or a significant difference between their incomes, however, the existing class 2 system may remain more favourable. The draft therefore includes a long transitional period for qualifying couples already married or in a registered partnership before 2028. Luxembourg is preparing a fundamental reform of personal income taxation. Under draft Bill 8676, the

7 min read

Form 100 or Annual Adjustment? Choosing the Right Luxembourg Tax Filing

Luxembourg employees often use the expressions "tax return" and "annual adjustment" as if they mean the same thing. They do not. Form 100 and Form 163 are different procedures with different eligibility rules, scope and possible outcomes. Choosing the correct route is the first step in preparing a filing. Form 100: a full income tax assessment Form 100 is the Luxembourg personal income tax return used for taxation by assessment. It covers the taxpayer's relevant income catego

3 min read

10 Common Luxembourg Tax Return Mistakes — and How to Avoid Them

Most tax-return mistakes are not caused by complex calculations. They arise because information is incomplete, a filing route is misunderstood or an amount is entered without considering the rule behind it. Here are ten recurring errors to check before submitting a Luxembourg personal income tax return. 1. Assuming that pre-filled information is complete Electronic and simplified returns can include salary and pension information, but they do not remove the taxpayer's respons

4 min read

CONFIDENCE IN EVERY TAX RETURN