The tax office is claiming someone else's debt from me
Before declaring you liable they must hear you, and in an appeal you can challenge both the grounds and the debts.
You can respond beforehand
In addition to the hearing (trámite de audiencia), you can submit arguments and documents before it.
«El trámite de audiencia previo a los responsables no excluirá el derecho que también les asiste a formular con anterioridad a dicho trámite las alegaciones que estimen pertinentes»
What the notice must tell you
How to appeal, to whom and by when.
«b) Medios de impugnación que pueden ser ejercitados contra dicho acto, órgano ante el que hubieran de presentarse y plazo para interponerlos.»
What you can challenge
The reason you are being held liable and the assessments being claimed.
«En el recurso o reclamación contra el acuerdo de derivación de responsabilidad podrá impugnarse el presupuesto de hecho habilitante y las liquidaciones a las que alcanza dicho presupuesto»
Is something different in your case?
Tell us in your own words and we will tell you what applies to you, with the law in hand.
General information, not advice on your specific case. Text prepared with the help of artificial intelligence; every quotation is a verbatim extract from the official text and is checked against the BOE every night. Other common letters.