Renting & housing

Contrato de Arras in Spain: Penitential, Confirmatory & Penal

By the AbogadoAI editorial team · Updated 18 July 2026 · 13 min read

🇪🇸 Read the original in Spanish

Buying or selling a property in Spain is, for most people, the most significant financial transaction of their lives. However, the excitement of finding the perfect home or the ideal buyer can quickly fade if the step preceding the public deed is not managed correctly: signing the reservation document. In the Spanish real estate market, this step is formalised through a pre-contract or contrato de arras (earnest money agreement), a legal instrument of vital importance that is often signed in a hurry and without understanding the serious legal consequences that each of its modalities entails. A mistake in drafting a single clause can mean the loss of thousands of euros or the obligation to buy a property under unfavourable conditions. Therefore, knowing the legal framework of the Código Civil (Civil Code) in depth is the best guarantee to protect your assets.

A contrato de arras is a private agreement signed as a preliminary step to the sale of real estate (or, occasionally, in long-term lease agreements). In this document, the parties—buyer and seller—express their intention to carry out the transaction and, to guarantee compliance with the agreement, the buyer delivers a sum of money to the seller as a deposit or down payment.

Although it is a tool used daily in the Spanish real estate sector, the Código Civil does not contain a systematic and detailed regulation of all types of arras. In fact, the jurisprudence of the Tribunal Supremo (Supreme Court) has had to outline the nature and effects of each modality due to the brevity of our historical legislation. The reference regulatory framework is mainly based on the following pillars:

The three types of arras: Differences, regulation, and consequences

Legal doctrine and the jurisprudence of the Tribunal Supremo classify arras into three clearly differentiated categories. Choosing one or the other will determine what happens if one of the parties decides to back out, whether it is possible to demand specific performance of the contract, or what financial compensation corresponds to the damages caused.

1. Arras Penitenciales (or withdrawal earnest money)

These are the only ones expressly regulated in the Código Civil, specifically in its Article 1454, which states: "If earnest money or a deposit has been mediated in the contract of sale, the contract may be rescinded, with the buyer agreeing to lose them, or the seller to return them duplicated".

2. Arras Confirmatorias (Confirmatory earnest money)

Arras confirmatorias do not allow unilateral withdrawal. Their function is to serve as proof or "confirmation" of the existence of an already perfected contract of sale. The amount delivered is considered the first down payment on the total price.

  1. Demand specific performance of the contract (forcing the purchase or sale through judicial channels).
  2. Request the resolution of the contract with compensation for damages (which must be proven and evaluated by a judge, and may be higher or lower than the deposit delivered).

3. Arras Penales (Penal earnest money)

These lie somewhere between the previous two and are configured as a guarantee of contract compliance through the establishment of a penal clause.

Deadlines, amounts, and key figures in the contrato de arras

In the Spanish real estate market, managing figures and execution times is critical to avoid the expiration of rights or penalties for delay. The usual and legal financial and temporal scales are detailed below:

Practical examples with real figures

To understand the financial impact of choosing one modality or another, let's analyze two common scenarios in the Spanish market.

Example 1: Arras Penitenciales (Article 1454 of the Código Civil)

Example 2: Arras Confirmatorias (Article 1124 of the Código Civil)

Practical steps: Step-by-step to sign a contrato de arras

To guarantee the legal certainty of the transaction, it is recommended to strictly follow this action protocol:

  1. Prior property checks: Before transferring a single euro, request an informative Nota Simple (property registry extract) from the Registro de la Propiedad (Property Registry) (it must not be more than 10 days old) to verify who the real owner is and if the property has charges (mortgages, liens, or easements). Also request the latest receipt of the IBI (municipal property tax) and a certificate showing the seller is up to date with community of owners' payments.
  2. Drafting the contract draft: Draft or commission a professional to draft a document clearly identifying the parties, the property (with its registry property number and cadastral reference), the total sale price, the amount delivered as arras, the maximum period to sign the deed, and, crucially, the *legal qualification of the arras** (citing the corresponding articles of the Código Civil*).
  3. Signing the contract and paying the deposit: Proceed to the physical or digital signing of the document in duplicate (on all its pages). The payment of the deposit should preferably be made by nominative bank transfer or certified bank cheque, stating in the concept: "Pago arras contrato compraventa piso [Address] - [Buyer's Name]". Avoid cash payments to comply with anti-money laundering regulations.
  4. Preparing the public deed: During the validity period of the arras, the buyer processes their financing and the seller prepares the documentation (energy efficiency certificate, cédula de habitabilidad (habitability certificate) if applicable, etc.). Both parties choose the notary office where the public deed will be signed.
  5. Signing the Deed and handing over the keys: On the agreed date, the parties attend the notary. The amount delivered in the arras is deducted from the final sale price, with the buyer paying the remaining balance by bank cheque. The keys are handed over and ownership is transferred.

Mistakes you must avoid

Frequently Asked Questions (FAQ)

What happens if the buyer does not get the mortgage? Do they lose the money?

As a general rule, if the contrato de arras is penitential and nothing to the contrary has been agreed, the buyer will indeed lose the money delivered if they do not obtain financing. To avoid this situation, a suspensive condition clause must be expressly included, stipulating that the validity of the contract is subject to the granting of the mortgage, forcing the buyer to present denial certificates from at least two or three banks to recover their deposit.

Can the arras be extended if the agreed period ends?

Yes, the arras can be extended by mutual agreement. For the extension to be fully valid and binding, it is essential to draft a written annex signed by both parties before the original period expires. This document must state the new deadline for signing. If the period expires without the extension or the deed having been signed, the party that was ready to comply can demand payment or resolution from the other, applying the agreed penalties.

What are the tax implications of the arras?

The delivery of the arras does not generate an immediate tax obligation for the Impuesto de Transmisiones Patrimoniales (ITP) or VAT, as it is considered a down payment for a future transfer. However, if the arras are rescinded (for example, if the buyer loses them or the seller returns them duplicated), that capital alteration must be declared in the IRPF (personal income tax) of the following tax year as a capital gain or loss in the general tax base.

Can I sign a contrato de arras for renting a home?

Yes, it is perfectly possible and legal. It is used to reserve a rental property while solvency documentation is gathered or the final contract is prepared. In this case, the underlying regulatory framework will be the Ley 29/1994 de Arrendamientos Urbanos (LAU / Urban Leases Act) and the Código Civil. The parties usually agree that the amount of the arras becomes, once the lease is signed, the monthly fianza (security deposit) or the first month's rent.

In summary

General legal information, not personalised legal advice. For your specific situation, ask your question for free at AbogadoAI — answers grounded in Spanish law (BOE), in English.

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This is general information, not legal advice. Verify on the BOE or consult a lawyer for your specific case.