Not filing does not make it stop. Stopping trade does not freeze the corporate entity, and the administration expects the exact same reporting cycle as it expects from an active business. Until the founders actively liquidate the structure, the filing obligations continue to roll over, and the penalties compound when the deadlines pass.
The minimum tax floor never disappears
The baseline cost of keeping an empty company alive is the minimum net wealth tax. The Administration des contributions directes levies this on resident capital companies regardless of whether they generate revenue. The official rate scales with the total assets of the entity: €535 (balance sheet ≤ €350k) · €1,605 (€350k–2M) · €4,815 (> €2M).
For a dormant entity, the remaining assets generally sit in the lowest band, triggering a fixed charge of 535 € on a balance sheet up to 350,000 €. If the founders left more capital or unresolved loans in the structure, the tax jumps to 1,605 € for a balance sheet up to 2,000,000 €, and hits 4,815 € above that. This tax accrues annually, creating a compounding debt to the state.
The entities outside the minimum tax net
Not every business structure faces this exact trap.
The compliance cycle ignores whether a company trades
The filing calendar runs exactly as it did when the company was active. You can review every filing deadline, dated across the full corporate lifecycle, but for a dormant entity, the cycle narrows to a core set of mandatory submissions.
Already trading
Photograph the invoice. Send it in. Everything else is handled
Bookkeeping, VAT returns and annual accounts by a licensed Luxembourg firm, from €250 a month. You keep access to your own records.
See how it works| Filing | The deadline | The consequence of missing it |
|---|---|---|
| Corporate tax returns | 31 December of the year following the tax year | A late filing supplement of up to 10% |
| Net wealth tax return | 31 December of the year following the tax year, applied to net wealth tax returns for the first time for tax year 2023 | Late payment interest of 0.6% monthly |
| Beneficial owner updates | 1 month | Daily penalty of 40 €, administrative strike-off |
The annual accounts demand a general meeting and a public filing
The managers must convene an annual general meeting within 6 months of the financial year-end. The accounts approved at that meeting must then go to the Trade and Companies Register. The government confirms the deposit of annual accounts happens within 1 month of the meeting, creating an outer statutory deadline of 7 months after the financial year closes.
The law on the commercial register and annual accounts sets the threshold for a small balance sheet at 7,500,000 €, but falling below it does not remove the filing duty. The obligation remains absolute even when the balance sheet carries nothing but the share capital.
The tax returns move to a mandatory digital platform
The company submits its corporate income tax and municipal business tax returns by 31 December of the year following the tax year. The ACD applies this exact same date to the net wealth tax return, setting the deadline at 31 December of the year following the tax year, applied to net wealth tax returns for the first time for tax year 2023.
The format is strictly digital. The ACD mandates electronic filing, a rule that is mandatory via MyGuichet.lu since tax year 2017 for resident capital companies, including the s.à r.l. and the s.à r.l.-S. This framework relies on secure authentication, meaning a LuxTrust product (private or pro) is required both to use MyGuichet and to sign the return.
The administrative leniency nobody can guarantee
What is still unknown for a dormant capital company is whether the tax office will grant any leniency on deadlines. The ACD notes that an extension is available only on a reasoned request addressed to the competent tax office, preferably by fax or post.
The value added tax reporting continues until formal deregistration
For value added tax, the Administration de l'enregistrement, des domaines et de la TVA enforces the standard schedule, meaning that monthly / quarterly returns due before the 15th of the month following the period, filed electronically via eCDF.
The beneficial owner register penalizes outdated personal details
The law on the beneficial owner register sets the deadline at 1 month. The clock does not start on the day of the event; rather, the LBR official guidance clarifies that the month runs from the moment the entity became aware, or should have become aware, of the event making the entry or its amendment necessary — not from the date of the event itself.
Penalties compound when a founder simply walks away
The arithmetic of abandonment quickly outpaces the cost of closing the entity properly. Leaving a company to sit without filing its returns turns a dormant entity into a compounding liability.
Missing the tax return deadlines triggers a late filing supplement of up to 10%. If the minimum net wealth tax remains unpaid, the ACD applies late payment interest at 0.6% monthly on the outstanding balance.
The penalties for ignoring the beneficial owner register escalate rapidly. A missing entry generates a daily penalty of 40 €. If a founder ignores the register entirely, the CSSF consolidated text imposes a minimum fine of 1,250 €. The law also allows for a severe administrative measure: the entity faces an administrative strike-off after 12 months of non-compliance.
The liquidation procedure that actually stops the clock
To stop the tax and filing obligations, a founder must formally dissolve the entity. Doing nothing does not dissolve a company. The government procedure for the voluntary dissolution of a company requires a specific legal sequence. The decision requires an extraordinary general meeting convened by the managers or directors, which must be held before a notary. For a standard limited liability company, this vote demands a quorum of half of the partners representing three-quarters of the share capital.
Once the liquidator completes their work, the closure notice must be filed with the RCS for publication in the RESA. Only then does the liability end, because the English guidance confirms that once the procedure is closed the company is struck off the Trade and Companies Register. Founders looking to properly wind down the entity will need to prepare a final balance sheet and often rely on a professional to handle their accounting and tax compliance to ensure the final corporate returns are filed by 31 December of the year following the tax year.
See what monthly accounting includes, from €250The retention period outlasts the company itself
Even after the company ceases to exist, the paperwork does not. The obligation to retain documents dictates that the accounting records of a liquidated company must be kept for 5 years. The French version of the dissolution procedure mirrors this, stating the books must be kept for 5 years after the closure.
Figures verified against impotsdirects.public.lu, guichet.public.lu, impotsdirects.public.lu, impotsdirects.public.lu, cssf.lu, guichet.public.lu on 2026-09-07.