What it is
Measures to prevent tax fraud in Spain
BOE step 7 of 7 · PassedIt is a government bill. Introduced by the Government. It was introduced on 13 March 2006. Introduced by: Gobierno.
Official title: Government bill on measures for the prevention of tax fraud.
Source: Congreso de los Diputados, file 121/000081· updated 11 Nov
Automatic summary, not yet reviewed
- Transactions between related companies or persons must be valued at their normal market value, that is, the price two independent parties would agree on. Anyone taking part in these transactions must keep documentation available to the Tax Agency, and failing to do so or declaring different values is a serious offense with fines.
- A new additional provision defines three concepts: tax haven, zero taxation and effective exchange of tax information. Each tax may use one or another of these concepts to fight transactions with opaque countries.
- Entities based in tax havens or zero-taxation territories are presumed to be resident in Spain if their main assets or activity are located here, unless they prove otherwise. Representative obligations for non-residents are also tightened, with fines of €2,000 or €6,000.
- Under VAT, anyone buying goods from businesses or professionals at a notoriously abnormal price is subsidiarily liable for the tax that was not paid in, to discourage buying from fraud rings. A special regime for groups of entities is also added, applying from January 1, 2008.
- To register used vehicles subject to the Special Tax on Certain Means of Transport, the self-assessment must first be endorsed by the Administration, which will check the declared value if it looks low. A partial refund of the Hydrocarbons Tax is also created for trucks, buses and taxis.
- In the General Tax Law, lifting the corporate veil is now a ground for tax liability: whoever controls a legal entity used abusively or fraudulently to evade debts to the Tax Agency can be held liable for them. Payments under agreed audit reports and sanctions may also be deferred or paid in installments, always with a guarantee or credit insurance policy.
- In notarial deeds on real estate sales, the tax identification numbers of those appearing and the payment methods used must be stated. Without that data, the Property Registry will not record the deed.
- The cadastral reference must appear in public documents, lease contracts and electricity supply contracts. Those with supply contracts already signed must provide it within six months of this law taking effect.
Who it affects
- Companies and professionals dealing with related entities: They must value those transactions at market price and keep documentation for the Tax Agency.
- Anyone buying goods from businesses or professionals: If they pay a notoriously abnormal price, they can be liable for unpaid VAT.
- Anyone buying or selling real estate: Their tax ID and payment methods must appear in the deed, or it cannot be registered.
- Owners of trucks, buses and taxis: They can claim a partial refund of the Hydrocarbons Tax on the diesel they use.
- Anyone renting an apartment or signing up for electricity: They must provide the property's cadastral reference in the contract.
Words worth knowing
- Operaciones vinculadas (related transactions)
- Transactions between parties with a relationship, such as a company and its shareholders, directors or group companies.
- Valor normal de mercado (normal market value)
- The price two independent parties would have agreed on in a free market.
- Paraíso fiscal (tax haven)
- A country or territory so designated by regulation, with zero taxation or no exchange of information with the Tax Agency.
- Responsabilidad subsidiaria (subsidiary liability)
- The duty to pay someone else's tax debt if that person does not pay it.
- Levantamiento del velo (lifting the corporate veil)
- The idea that, if a company is used fraudulently, authorities look at who really controls it to demand payment of its debts.
It summarizes the law as published in the BOE. It is written by artificial intelligence and may contain mistakes: the official text is what counts. Read the official text · How we make summaries
Where it stands
How far did it get?
It took 7 of 7 steps. It reached BOE, and today it is passed.
- Introduced13 March 2006Someone registers the text in the Congreso.
- Admitted21 March 2006The Bureau of the Congreso accepts it and, for a members’ bill, the plenary decides whether to consider it.
- Amendments24 March 2006Groups propose changes.
- Committee17 May 2006A committee goes through the text in detail.
- Plenary21 June 2006All 350 deputies vote.
- Senate29 June 2006The Senate can pass it, amend it or veto it.
- BOE2 November 2006It is published in the Official State Gazette (BOE) and comes into force.
See the 12 official steps on a timeline
Was there a plenary vote?
We have no plenary vote linked to this law in the Congreso’s data.
What happens next
What happens now?
It is law, or will be once published in the BOE. It comes into force on the date its own text sets.
The same initiative in the other chamber:
- VIII Legislature, Senate Government bill on measures for the prevention of tax fraud.
Published in the BOE: Law 36/2006, of November 29, on measures for the prevention of tax fraud
Sources
Where does all this come from?
- Congreso de los Diputados, file 121/000081
Official title, type, author, dates and stage.
Retrieved 11 November 2026
- BOE, BOE-A-2006-20843
The law as published.
Retrieved 11 November 2026
- The data comes from the open files of the Congreso, the Senate and the BOE, unaltered.
- Each deputy’s province is the one of their seat on the day of the vote.
- We only say “passed” or “rejected” when the majority needed is certain; otherwise we say which side had more votes.