Filing a criminal complaint for fraud is not “formalising anger”. It activates criminal proceedings when there is sufficient deceit, patrimonial delivery and a loss worth pursuing with real measures. In Madrid we see well-built complaints that unlock the case —and others archived for weak evidence or for mistaking a civil breach for a crime. This analysis sets out the firm’s approach before you sign a complaint or respond to one.
When a complaint fits
Fraud requires, in short, deceit, error by the person who delivers, a disposition act and loss. Someone not paying an invoice or breaching a contract is not enough: there must be a scheme that induced payment, signing or parting with an asset.
A complaint makes sense when documentation fixes the deceit (emails, contracts, transfers, concrete promises), clear identification of the accused and quantifiable loss. If the alleged author is abroad with no trace of assets in Spain, assess whether criminal effort adds value over civil proceedings.
It also fits when the victim needs precautionary measures (attachment, account freezes) and criminal proceedings often move faster than an ill-prepared ordinary claim. That does not guarantee recovery, but it can freeze movements.
If the dispute is purely contractual between partners with disputed accounts, commercial or civil routes sometimes come first —or in parallel— rather than a complaint the court reads as a disguised breach.
Complaint versus police report
A report may start an investigation, but for many property offences private prosecution enters via a criminal complaint. Confusing steps delays deadlines and can leave without standing whoever holds the economic interest.
The complaint must set out the facts, the persons targeted and, where possible, documentary proof. A generic text (“I was defrauded”) invites archival.
Whoever files assumes costs and procedural responsibility. That is not a flaw: it forces thinking whether the case holds. We prefer a less spectacular and more provable complaint.
If another victim already reported, duplication is not always needed. Sometimes join; sometimes wait and add evidence. It depends on the case stage and your credit.
Evidence that usually decides
Bank trails: origin and destination of transfers, beneficiaries, cross-holdings and movements after collection. Without that, the oral story stays at “trust”.
Communications showing promise or concealment: no screenplay needed; temporal coherence between what was promised and what was delivered.
Corporate documents when a company is involved: who signed, who had cash access, false invoices or double books.
Accounting expert evidence when amounts are high or the scheme opaque. Clear numbers change investigation quality.
Common victim mistakes
Waiting years and acting once assets are already gone. Late complaints often coincide with completed asset stripping.
Hand deals without record then complaining as if no interim pact existed. That complicates the initial deceit narrative.
Mixing fraud, misappropriation and disloyal administration in one unfocused brief. One well-argued main type beats a catalogue.
Posting on social media or pressuring the accused outside process. That does not recover money and can backfire.
What we ask in the first conversation
Timeline: what was promised, when paid, when contact stopped, collection attempts.
Documents: contracts, invoices, statements, screenshots in context, tax and corporate IDs.
Procedural status: prior report?, other victims?, open civil case?
With that we say whether to complain, go civil, both in a concrete order, or not litigate criminally. First guidance avoids months toward predictable archival.