Short answer. You do not have to prove loss. Article 1228 provides that proof of actual damages suffered by the creditor is not necessary in order that the penalty may be demanded. It is not quite automatic, though: the other party must actually be in default before the clause bites.

What the law says

Proof of actual damages suffered by the creditor is not necessary in order that the penalty may be demanded.

Civil Code, Article 1228 — Penalty Without Proof of Damage. Read the full provision →

What the clause spares you

Article 1228 of the Civil Code is a single sentence: Proof of actual damages suffered by the creditor is not necessary in order that the penalty may be demanded. That removes the hardest part of most breach cases. Ordinarily a claimant has to show what the breach cost him in money, with records, invoices and often expert evidence, and a genuine loss that cannot be documented recovers nothing. A penal clause settles the figure in advance, so a delay that would be expensive to quantify — lost bookings, idle staff, a project pushed back a month — produces a sum you can demand without opening your books at all.

What you still have to establish

Being relieved of proving loss is not the same as being relieved of proving breach. You must still show a valid penal clause, that the obligation it secures was not complied with, and that the debtor is in default. Article 1169 supplies the usual gate: delay begins from the moment the creditor judicially or extrajudicially demands fulfilment, subject to the exceptions that article itself lists, among them where the obligation or the law expressly declares that demand is unnecessary. So a supplier who is merely past the date on the purchase order may not yet owe the penalty. Send the demand and keep proof of receipt.

The price of the shortcut

Article 1226 sets out the other half of the bargain: the penalty substitutes the indemnity for damages and the payment of interests in case of noncompliance, if there is no stipulation to the contrary. You are not merely excused from proving your loss, you are usually confined to the agreed figure even where the real loss was much larger. The exceptions in that article are narrow — a stipulation preserving damages, a debtor who refuses to pay the penalty, or fraud in the fulfilment of the obligation. Where your exposure could dwarf the penalty, that is a drafting problem to solve before signing.

And the figure is not beyond challenge

Not needing to prove damages does not mean the number is untouchable. Article 1229 directs the judge to equitably reduce the penalty where the principal obligation has been partly or irregularly complied with, and permits reduction even without performance if the penalty is iniquitous or unconscionable. A per-day penalty accumulating over months of delay on work that was eventually finished invites both arguments. Before enforcing, put the accrued penalty beside the contract price and beside what you would realistically recover on proof of actual loss — that comparison tells you how firmly the figure will hold.

Cases citing this provision

These Supreme Court decisions cite the provision above. We list them so you can read them yourself; the summaries of what each decided are not ours to give.

Related provisions

Note. Statute text quoted on this page is reproduced from the official enactment and is linked to the full provision. The explanation around it is general legal information from Vivas & Nobles Law Office, not legal advice. Whether it applies to your situation depends on facts only a lawyer reviewing them can assess.