What is the reverse charge
In a normal transaction, the seller charges VAT on the invoice and pays it to the tax authority. With the reverse charge, that role changes: the seller issues the invoice without VAT and the buyer self-assesses it, declaring it as output VAT.
In the construction sector, this mechanism is established by Article 84.Uno.2º.f of the VAT Law. It was introduced by Law 7/2012, a rule designed to combat fraud by shell companies that issued fake invoices and disappeared without paying the tax.
When it applies: the developer and subcontracting
It applies to works contracts, with or without the provision of materials, and to the assignment of personnel to carry them out. The most common case is the subcontracting chain: when a contractor entrusts part of the work to a subcontractor, the subcontractor's invoice is issued without VAT, regardless of the size or activity of each party.
It also applies when the recipient is a business acting as developer or owner of the works and transfers them to third parties, even if merely tolerated, or is regularly engaged in constructing or developing buildings.
In both cases, the works must be in Spain and the recipient must be a business or professional. Outside these cases, there is no reverse charge.
How to invoice and declare
The subcontractor or contractor issues the invoice without VAT, indicating that the transaction is subject to the reverse charge and citing Article 84.Uno.2º.f of the VAT Law. They do not include the tax in their form 303 as output VAT, although they retain the right to deduct VAT on their own purchases.
The recipient of the invoice declares the VAT in their form 303 in the output VAT box for reverse charge and, in the same return, deducts it if entitled to do so. If the deduction is full, the effect is neutral; if not, the difference is paid.
It is advisable to keep documentation of the chain: subcontracting contract, work certifications, invoices without VAT citing the article, and proof of form 303. This is the first thing an inspection requests.
Common mistakes
The most costly is not applying it in subcontracting chains: if the subcontractor charges VAT when the reverse charge should have applied, they must still pay it, and the recipient cannot deduct it twice. The conflict between incorrectly issued invoices ends up in both parties' form 303.
It is also common to think that any renovation in a private individual's home involves the reverse charge. This is not the case: since the individual is not a business, works for private individuals are always invoiced with normal VAT.
And an operational detail: if the recipient of the work is not registered in the census as a business for VAT purposes, the transaction is invoiced with normal VAT, even if the conditions of Article 84 are met.
The same logic across the rest of Europe
Reverse charge is not a Spanish oddity: it is the standard mechanism for intra-Community supplies of goods and services within the EU, where VAT is settled in the recipient's country. Portugal applies its own version (inversão do sujeito passivo) in the construction sector and on imports.
If your company expands into other markets, review each transaction separately: who invoices, who declares and which boxes are used changes from country to country, and an error carries over for years in returns.
