eCDF filing platform
Nearly every recurring filing a Luxembourg company makes passes through one platform: eCDF, the State's collection point for financial data. What it is, what must go through it, and the deadlines attached.
Last verified July 2026
Official sources only, linked per figure
The platform
What eCDF is
eCDF, the State's electronic platform for collecting financial data, is run by the CTIE; companies prepare, validate and transmit periodic and annual declarations, annual accounts and the standard chart of accounts through it
ecdf.b2g.etat.lu — platform front page, objective and scope · verified 14 August 2026
How filings are transmitted
filings reach eCDF either as XML files generated by accounting software against the CTIE's predefined structure, or typed and validated in the on-screen forms
ecdf.b2g.etat.lu — platform front page, transmission modes · verified 14 August 2026
Where annual-accounts data goes
annual accounts validated in eCDF serve the official RCS filing and are available to STATEC for statistics and to the AED and ACD for cross-checking annual VAT and tax returns
ecdf.b2g.etat.lu — platform front page, data-sharing scope · verified 14 August 2026
What runs through eCDF
VAT returns — mandatory channel
since 1 January 2020 every VAT return — monthly, quarterly or annual — must be filed electronically through eCDF, as an online form or an XML file
guichet.public.lu — filing VAT returns · verified 14 August 2026
VAT return deadline
monthly / quarterly returns due before the 15th of the month following the period, filed electronically via eCDF
guichet.public.lu - déclaration de TVA · verified 24 July 2026
Annual accounts filing
months after financial year end (AGM within 6, filing within 1 more)
7
compliance doc §2 - AGM within 6 months + 1 month to file · verified July 2026
In plain terms: your accounting software talks XML to eCDF, and the same validated data then serves the RCS accounts filing and the tax administrations' cross-checks. Access needs a professional certificate and an approved eCDF access request — which is why most founders only ever see the platform through their accountant.
eCDF and MyGuichet are not the same thing
The two government platforms confuse almost everyone at the start. eCDF is where the returns themselves are filed — VAT returns, annual accounts, the standard chart of accounts. MyGuichet.lu is the general administrative counter; for VAT it hosts eTVA-C, which shows the state of your VAT account but does not replace the eCDF return.
Go deeper
Common questions
What is eCDF in Luxembourg?
eCDF is the State's electronic platform for collecting financial data, run by the CTIE. Companies prepare, validate and transmit periodic and annual declarations, annual accounts and the standard chart of accounts through it.
Do I file my VAT return on eCDF or on MyGuichet.lu?
The return itself goes through eCDF — electronic filing has been mandatory for every VAT return since 1 January 2020. MyGuichet.lu's eTVA-C application shows the state of your VAT account; it does not replace the eCDF filing.
Related in the database
Reference material from official Luxembourg sources, linked per figure. This is document automation support, not legal or tax advice; confirm figures against the linked source for your specific case.