Should I apply reverse charge VAT to a doctor, school, or non-profit (ASBL/VZW)?

Generally no. Doctors, hospitals, schools, and non-profits exempt under Article 44 of the Belgian VAT Code do not file periodic VAT returns. You must charge them standard 21% VAT. However, thanks to the 2023 statutory clause, if such a client gives you an enterprise number and does not dispute your reverse charge invoice in writing within 30 days, tax liability shifts to them.

What if my client is a small business under the €25,000 VAT exemption scheme?

Small businesses operating under the small-enterprise exemption scheme (Article 56bis) hold a VAT number but do not file periodic VAT returns. The reverse charge regime is prohibited for them: you must charge 21% VAT. If they receive a reverse charge invoice by mistake, they are legally required to object in writing within one month and request a corrected invoice with VAT.

Does reverse charge apply when a company director renovates a mixed-use home office?

Yes, provided the customer supplies their active VAT number and the works relate at least partly to their business activity. The customer is then responsible for restricting their input VAT deduction in their own VAT return according to the actual professional floor-area ratio.

What is the difference between domestic construction reverse charge and intra-EU reverse charge?

Domestic construction reverse charge (Article 20 of Royal Decree No. 1) applies to immovable building work performed in Belgium between two Belgian VAT-registered businesses (reported in Grids 45 and 87). Intra-Community reverse charge (Article 51, § 2 of the VAT Code) applies to cross-border B2B services between businesses established in two different EU Member States (Grids 44 and 88).

Reverse Charge VAT in Belgium (Cocontractant)

Key Takeaway: In Belgium, when a contractor performs construction or real estate work for a VAT-registered business client that files periodic VAT returns, the invoice must be issued excluding VAT (0%) under the domestic reverse charge mechanism (Article 20 of Royal Decree No. 1). Writing "Reverse charge" alone is no longer legal: since 1 January 2023, you must print the full statutory clause containing the 1-month dispute window, or risk personal liability for the 21% VAT during a tax audit.

Whenever a builder, electrician, heating engineer, carpenter, or painter works as a subcontractor or performs renovation work on business premises in Belgium, the VAT collection rule flips. Instead of charging VAT on your invoice, your business client self-assesses and deducts the tax in their own periodic VAT return.

Unlike the 6% reduced VAT rate for private home renovations, the domestic reverse charge regime (known in Belgium as régime du cocontractant or medecontractant) is never optional. Whenever the statutory criteria are met, applying 0% reverse charge is mandatory. Charging 21% VAT by mistake to a VAT-registered business means the Belgian tax authority (FPS Finance) will disallow your client's input VAT deduction.

Below is the exact legal clause to copy-paste onto your quotes and invoices, the eligibility rules, and the Belgian VAT return boxes to complete.

1. Mandatory Invoice Statement (Ready to Copy-Paste)

Since 1 January 2023, simply writing "VAT reverse-charged" or "Autoliquidation" on a construction invoice is non-compliant. Article 20, § 3 of Belgian Royal Decree No. 1 mandates a full statutory paragraph that shields the contractor.

Exact official text to include on your Belgian invoices (FR / NL):

« Autoliquidation : En l'absence de contestation par écrit, dans un délai d'un mois à compter de la réception de la facture, le client est présumé reconnaître qu'il est un assujetti tenu au dépôt de déclarations périodiques. Si cette condition n'est pas remplie, le client endossera, par rapport à cette condition, la responsabilité quant au paiement de la taxe, des intérêts et des amendes dus. »

(English translation for reference: "Reverse charge: In the absence of a written objection within one month of receipt of the invoice, the customer is presumed to acknowledge that they are a taxable person required to file periodic VAT returns. If this condition is not met, the customer shall bear liability for the payment of the tax, interest, and fines due in respect of that condition.")

Why the 1-month dispute window protects you

Before this reform, contractors had to verify whether their business customer actually filed periodic VAT returns (rather than operating under the small-business VAT exemption scheme or an exempt medical/educational status). If the contractor got it wrong, tax auditors assessed the uncollected 21% VAT against the contractor.

By printing this statutory wording on a compliant Belgian invoice, liability shifts to the customer: if your client is exempt from periodic returns and fails to object in writing within 30 days, the FPS Finance collects the back taxes and fines directly from the client, never from you.

2. The 3 Cumulative Conditions for Reverse Charge VAT

The domestic construction reverse charge does not apply to every B2B sale. Three cumulative conditions must be met:

Supply of immovable construction work: the service must consist of construction work by nature (building, roofing, renovation, demolition, painting, tiling) or the supply and installation of equipment permanently integrated into a building (central heating, electrical wiring, sanitary fixtures, heat pumps, wired alarm systems, built-in cabinetry).
VAT-liable contractor: you must be a regular VAT-registered contractor (sole traders operating under the €25,000 small-business exemption scheme under Art. 56bis remain under their own exemption rules).
Client filing periodic VAT returns: your customer must hold a valid Belgian VAT number (BE0... or BE1...) and submit monthly or quarterly VAT returns.

Warning: Selling construction materials on their own without installation (counter sales or dropping materials off at a site without fitting them) never qualifies for reverse charge VAT. Material-only supplies must always be invoiced at the standard 21% VAT rate.

3. Eligible Works vs. Excluded Services: Summary Table

Certain services closely related to construction frequently trigger tax reassessments during VAT audits. This table summarises the boundaries set by Royal Decree No. 1:

Service Invoiced to a B2B Client	Applicable VAT Regime	Belgian Tax Rule (Royal Decree No. 1, Art. 20)
Structural work, roofing, facades, demolition	0% Reverse Charge	Construction work on immovable property by nature
Electrical, plumbing, HVAC, heating with fitting	0% Reverse Charge	Equipment permanently incorporated into the building
Painting, fitted flooring, interior joinery	0% Reverse Charge	Building finishing and improvement work
Building cleaning, maintenance, and repairs	0% Reverse Charge	Explicitly assimilated to immovable construction work
On-site labour subcontracting	0% Reverse Charge	Provision of personnel for immovable works
Sale of materials alone (without installation)	21% Standard VAT	Pure supply of movable goods
Architect, surveyor, or safety coordinator fees	21% Standard VAT	Intellectual services excluded from Article 20
Equipment or scaffolding rental (without assembly)	21% Standard VAT	Movable rental (if assembled on site, switches to reverse charge)

4. Belgian VAT Return Grids and Peppol 2026 Rules

When an invoice is issued under the reverse charge regime, no VAT is paid to the subcontractor. Both parties must report the transaction in dedicated grids of the Belgian periodic VAT return:

Party in the Transaction	Belgian VAT Return Grid	Amount to Report
Contractor / Subcontractor (issuer)	Grid 45	Net (excl. VAT) invoice amount issued under reverse charge
Business Client (recipient)	Grid 81, 82, or 83	Net purchase amount (goods, services, or capital assets)
Business Client (recipient)	Grid 87	Net amount subject to domestic construction reverse charge
Business Client (recipient)	Grid 56	Self-assessed output VAT due (typically 21% calculated by the client)
Business Client (recipient)	Grid 59	Deductible input VAT (100% tax-neutral if fully deductible)

Since 1 January 2026, under mandatory B2B Peppol e-invoicing in Belgium, a reverse charge UBL XML invoice must carry tax category code AE (VAT Reverse Charge) and include the buyer's full VAT number inside the PartyTaxScheme node (European EN 16931 rule BR-AE-02). Missing either element causes automatic rejection by the Peppol network.

Action Checklist Before Sending Your Reverse Charge Invoice

Confirm that the client is a VAT-registered business (see our guide on B2B vs B2C quotes and invoices).
Verify that the client's full Belgian VAT number (BE0...) is printed on the invoice.
Set the VAT rate to 0% on all eligible construction line items.
Ensure the full 1-month statutory clause (Art. 20, Royal Decree No. 1) appears on the document.
If you previously issued an invoice with the wrong VAT rate, cancel it first with a compliant Belgian credit note before reissuing.

Frequently asked questions

How HeyDevis Automates Reverse Charge VAT in Belgium

Typing out the full Royal Decree No. 1 clause by hand or forgetting the UBL tax category code exposes contractors to rejected invoices. With HeyDevis, Belgian construction reverse charge compliance is built in:

One-click "Construction Subcontracting Reverse Charge" mode: automatically sets 0% VAT and prints the full statutory Article 20, Royal Decree No. 1 clause on your PDF.
Mandatory client VAT number guard: blocks issuing a reverse charge quote or invoice if your B2B client's VAT number is missing.
Peppol UBL and PCMN accounting ready: encodes the required AE tax category in the UBL XML file and maps transactions to Belgian PCMN account 451400 for your accountant.

Reverse Charge VAT in Belgium (Cocontractant): Rules, Mandatory Wording, and Template