Question 1

Which legal forms does Galux serve?

Accepted Answer

Galux handles SARL-S (simplified), SARL, SA, SCI, sole traders (indépendants), liberal professions and individuals (resident, cross-border workers and European officials).

Question 2

Is everything fully digital?

Accepted Answer

Yes. Clients upload documents through a secure online portal, sign electronically via Odoo Sign, and receive reports and tax filings remotely. No office visit is required.

Question 3

In which languages does Galux operate?

Accepted Answer

Galux delivers all services in English, French and German.

Question 4

How are Galux fees structured?

Accepted Answer

Galux uses transparent quotes available via the online quote form. We offer quarterly and annual flat-fee packages for small businesses and self-employed, plus tailored quotes for larger companies.

Question 5

What is the annual accounts filing deadline in Luxembourg?

Accepted Answer

Luxembourg companies must file their annual accounts (balance sheet + profit and loss) at the Registre de Commerce et des Sociétés (RCS / LBR) within 7 months after the end of the fiscal year.

Question 6

How often must VAT returns be filed in Luxembourg?

Accepted Answer

Most SMEs file VAT quarterly (TVA_DECT). All VAT-registered taxpayers also file an annual VAT return (TVA_DECA) by 1 May of the following year.

Question 7

When is the personal income tax return due in Luxembourg?

Accepted Answer

The Modèle 100 personal income tax return is due by 31 December of the year following the tax year.

Question 8

Can Galux file taxes for French, Belgian or German cross-border workers?

Accepted Answer

Yes. Galux specialises in cross-border (frontalier) tax returns for residents of France, Belgium and Germany who work in Luxembourg, including joint household taxation and bilateral treaty optimisation.

Question 9

Does Galux work with European institution staff?

Accepted Answer

Yes. Galux assists officials and agents of the European Commission, European Parliament, Court of Justice, EIB, European Court of Auditors and other EU institutions with their Luxembourg and home-country tax obligations.

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