Construction Sector Accounting in Luxembourg: Sector Specificities and VAT
Mickaël LOC
Construction-Specialist Accountant ·
Construction Sector Accounting in Luxembourg: Sector Specificities and VAT
In the construction sector (BTP) in Luxembourg, three accounting and tax mechanisms are essential: the VAT reverse charge on subcontracting services between taxable persons (the subcontractor invoices excluding VAT), percentage-of-completion accounting for long-term contracts, and the treatment of retention guarantees (5 to 10% of the works amount) as deferred receivables until their release.
VAT and reverse charge in the construction sector
In Luxembourg, construction services between VAT-taxable persons are subject to the reverse charge mechanism: the subcontractor invoices excluding VAT and it is the taxable principal that declares and deducts the VAT. This mechanism requires particular vigilance in accounting for invoices received and issued.
Percentage-of-completion accounting
For long-term contracts, the percentage-of-completion method allows revenue to be recognised as the work is carried out, rather than at final delivery. This method requires precise monitoring of work progress statements and completion certifications.
Retention guarantees
Retention guarantees (generally 5 to 10% of the works amount) are withheld by the client during the warranty period. They must be recorded as deferred receivables and tracked until their release at the end of the warranty.
Do you operate in the construction sector in Luxembourg? Our construction sector specialist accountants handle your specificities: VAT reverse charge, work progress statements, and retention guarantees.
Frequently Asked Questions
How does VAT reverse charge work in the Luxembourg construction sector?
In the Luxembourg construction sector, when a subcontractor provides construction services to a principal subject to VAT, they invoice without VAT (reverse charge). The principal simultaneously reports and deducts the VAT. The subcontractor must mention 'reverse charge' on the invoice.
What is percentage-of-completion accounting?
The percentage-of-completion method allows revenue from a construction contract to be recognised as work progresses, based on the percentage of work performed (work certifications, number of hours, costs incurred). It reflects economic reality more accurately than the completed contract method.
How should retentions be accounted for in construction?
Retentions (generally 5 to 10% of the value of the works) are withheld by the client until the expiry of the warranty period. They must be reported as long-term receivables in the balance sheet assets, separate from ordinary trade receivables, and released at the end of the warranty period.
What are the specifics of payroll in the construction sector?
Payroll in the Luxembourg construction sector is governed by sector collective bargaining agreements. It includes premiums for special work (height, night, weather), site bonuses and travel allowances. EU posted workers benefit from Luxembourg salary conditions.
How should subcontractor accounting be managed in construction?
Managing subcontractors requires careful monitoring of accepted work situations, retention amounts applied, and reverse charge VAT invoices received. Each subcontracting contract should be tracked analytically to control the margin on each site.


