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When a client does not pay, the first decision is not legal but economic: how much it will cost to collect, and how long it will take. Chasing unpaid invoices is often a matter of standing as much as of cash flow.
The Spanish proceso monitorio, the order for payment procedure, exists for exactly this. It is the most direct route Spanish law offers for recovering a documented money debt, and it does not require the creditor to prove anything beyond the document evidencing the debt.
What the order for payment procedure is
The procedure is available to any kind of creditor: companies, self-employed professionals, individuals or owners' associations. It is used to demand payment of debts that are liquid, determined, due and payable, meaning a specific sum whose payment date has already passed.
Its logic is the reverse of an ordinary lawsuit. Instead of opening a debate, the court directly requires the debtor to pay. Only if the debtor opposes does adversarial litigation begin. If the debtor says nothing, the creditor moves straight to enforcement.
There is no cap on the amount. Article 812 of the Civil Procedure Act allows a money debt of any value to be claimed through this route.
Which documents can start a claim
The law admits two broad families of documents. First, those signed by the debtor, or bearing their seal, stamp or any other mark, physical or electronic, whatever the medium. Second, invoices, delivery notes, certifications, telegrams and any other document which, although created unilaterally by the creditor, is of the kind that normally records that type of commercial relationship.
It is worth stressing that an unsigned invoice is sufficient. This is one of the most common misconceptions. What helps is being able to produce alongside it the purchase orders, emails, delivery notes or statements showing that the relationship existed and that the goods or services were delivered.
Article 812 adds two further cases: commercial documents evidencing a lasting prior relationship, and certificates of non-payment of sums owed for common expenses of urban owners' associations. That last point makes this the natural route for owners' associations: the certificate of the general meeting's resolution, endorsed by the chair, is enough as title.
Which court hears the claim
The application is filed with the Court of First Instance for the debtor's domicile, or for the place where the debtor can be found.
There is one practical exception: for unpaid common expenses of owners' associations, the association may choose between the court for the debtor's domicile and the court for the place where the property is located.
Are a lawyer and a court agent required?
For the initial application, neither is mandatory: not a lawyer (Article 31 of the Civil Procedure Act) nor a procurador, the court agent (Article 23).
The scope of that exemption is worth understanding, because it creates a false sense of simplicity. It is not required to file the application, but it does become required once the claim exceeds 2,000 euros and the matter ceases to be a simple demand for payment. If the debtor opposes, the statement of opposition must be signed by a lawyer and a court agent where their involvement is required by reason of the amount. The deadlines that follow are short and cannot be recovered.
The mandatory step before filing
Since 3 April 2025, having the debt documented is no longer enough. Article 5 of Organic Law 1/2025 makes prior recourse to an appropriate dispute resolution mechanism a procedural prerequisite, and the requirement covers both the declaratory proceedings of Book II of the Civil Procedure Act and the special proceedings of Book IV, where this procedure sits. The list of exceptions is closed and, within that Book, leaves out only the bill of exchange procedure.
The consequence is direct: Articles 399.3 and 403 of the Civil Procedure Act provide that claims will not be admitted where that prior attempt is not evidenced. It is not a recommended formality, it is the door in.
The form, by contrast, is flexible. The requirement is satisfied by mediation, conciliation, the neutral opinion of an independent expert, a confidential binding offer or any other negotiating activity. And expressly also where the negotiation is conducted directly by the parties or their lawyers, provided it is documented. There is no obligation to go through any particular body.
A lawyer is only mandatory where the mechanism chosen is a binding offer, and only above 2,000 euros.
In practice this reorders the work: the out-of-court claim that used to be a matter of commercial judgment is now also the requirement that unlocks the court route. It is therefore worth documenting from the very first contact, because that documentation is what is later filed with the application.
What happens after the demand for payment: three scenarios
Once the application is admitted, the Court Clerk requires the debtor, within 20 working days, either to pay or to appear and explain, with reasons, why the amount claimed is not owed. From there, three outcomes are possible.
1. The debtor pays
The proceedings are closed. This is the most frequent outcome where the debt is well documented and the debtor is solvent, because a court demand changes the conversation: it is no longer a supplier chasing payment, it is a court.
2. The debtor neither pays nor appears
The Court Clerk issues a decree bringing the procedure to an end and the creditor may apply directly for enforcement and attachment of the debtor's assets.
There is an advantage here that is often overlooked: a bare application suffices, with no need to wait the twenty days that Article 548 imposes in ordinary enforcement. It is the fastest route available to attachment.
Moreover, once enforcement has been ordered, neither creditor nor debtor may reopen that amount in later ordinary proceedings. The matter is closed.
3. The debtor opposes
This is the scenario worth planning for before starting. If the debtor files a statement of opposition in time, the matter is finally determined in whichever proceedings are appropriate, and the judgment carries the force of res judicata. What happens next depends on the amount claimed.
Where the debt does not exceed 15,000 euros, the Court Clerk issues a decree closing the procedure and orders it to continue automatically as a juicio verbal. The creditor does not have to file a fresh claim: the opposition is served on them and they may challenge it in writing within 10 days. Both parties then have 5 days to propose evidence.
Where the debt exceeds 15,000 euros, the mechanism is different and far more demanding. The creditor must file ordinary proceedings within one month of service of the statement of opposition. Failing that, the case is dismissed and, in addition, costs are awarded against the creditor. This is the point at which a badly handled claim becomes a double loss: nothing recovered, and costs to pay.
That 15,000 euro threshold is what separates the juicio verbal from ordinary proceedings under Articles 249 and 250 of the Civil Procedure Act. It is worth checking before claiming, because it determines the cost, the timetable and whether there is a one-month deadline to meet.
One useful point: if the debtor opposes on the basis that less is owed than claimed, proceedings continue in respect of the amount the debtor admits. The admitted part is not held up by the dispute over the rest.
When this is not the right route
The procedure is fast when it works, but it is not the answer to everything. It is worth ruling out, or combining with another route, in these cases:
- The debt is neither liquid nor determined. If the amount depends on a valuation, on a penalty still to be calculated or on a breach still to be proved, this route does not fit.
- Opposition is certain. Where there is a genuine dispute about the quality of the service or about what was agreed, it only adds a step before litigation that will have to happen anyway.
- The debtor is insolvent. Winning without collecting is the worst possible outcome. A prior solvency review avoids spending on proceedings that will end in attachment with no assets.
- There are dishonoured promissory notes or cheques. The bill of exchange procedure is usually preferable, because it allows precautionary attachment from the outset.
This is why we assess both the debt and the debtor's solvency before choosing a route. The operational question is not only whether a claim can be brought, but whether it is worth bringing and by which path.
The deadline not to lose: limitation
Personal actions with no special limitation period are time-barred after five years from the moment performance of the obligation can be demanded, under Article 1964 of the Civil Code. For an invoice, that moment is normally its due date, not its issue date.
Five years sounds like a lot until you review a company's aged debtors and find invoices four years old. A verifiable formal demand interrupts limitation, which is one reason the Spanish burofax is not a decorative formality.
Before court: the out-of-court claim
A good share of unpaid invoices are collected before setting foot in a court. You can also read about claiming unpaid invoices online.
Two complementary tools deserve a mention. Listing the debtor on a credit default register, which carries strict legal requirements and cannot be used as a general threat. And reclaiming the VAT on an unpaid invoice, which reduces the real impact of the default while the principal is being pursued.
If the problem is recurrent, the useful work happens before the default: in the contract, in the payment terms and in customer credit control. We develop that in how to avoid unpaid invoices before having to chase them.
The other court routes
This is one route, not the only one. The juicio verbal, ordinary proceedings, the bill of exchange procedure for promissory notes and cheques, monetary enforcement and attachment of assets form a single path, and the initial choice shapes the rest.
We set them all out, with deadlines and thresholds, on our debt recovery in Spain page.
Let's talk about your case
We are a Barcelona firm specialising in civil and commercial law, with civil, commercial and insolvency teams under the same roof, which matters when the debtor is a company in difficulty. We work in Spanish, Catalan, English, French and Italian.
If you have an unpaid invoice or an outstanding debt and want to know which route suits you and what to expect from it, tell us about your case.
