
Failure to submit this declaration on time, or to file incorrect information, has resulted in significant penalties: There were fixed fines ranging from 100 to 5,000 euros for incorrect information, and in the worst cases there were further fines of up to 150% of the tax liability. In some cases this meant that the taxes to be paid were higher than the value of the assets which were not declared. From the beginning, the tax form 720 - with its catalogue of fines and no statute of limitations on tax liability - was very controversial in Spain and at EU level.
The Court of Justice of the European Union (CJEU) ruled at the end of January 2022, that some of the obligations contained in this form are in breach of European laws. The ruling said that the fines for taxpayers as stated in the sanction regulations of Form 720, are excessive and violate the principle of the free movement of capital. In addition, failure to report assets results in undeclared income being taxed as unjustified capital gains, without the taxpayer being able to invoke the four year statute of limitations otherwise applicable in Spain. Finally, the CJEU states that the amount of the fines imposed is disproportionate to the sanctions generally provided for by the laws of Spain for similar infringements.
Tax form 720 has now been amended by Law 5/2022 in two key points: 1) The disproportionately high fines are eliminated. The previous sanction regulations, which provided for fixed fines for each violation and a penalty of up to 150%, are replaced by the regulations of the General Tax Code.2) The 720 tax model is now subject to the statute of limitations of general tax law, which means that any tax debts become barred by statute after four years. However, it should be noted that the duty of tax residents to report foreign assets abroad has been retained. The CJEU did not question the obligation to submit Form 720. The tax return for the previous year must be submitted by the end of March of the following year at the latest.

According to some tax advisors, a taxpayer who did not previously declare foreign assets due to the high fines, can do this now after the change of law. They need to file tax form 720 for the four previous years in addition to the current year. Since the CJEU ruling, taxpayers have been able to reclaim part of the fines that were un awfully paid in the past. If administrative proceedings are still ongoing, the fines can be challenged with reference to the CJEU ruling and taxes can be reclaimed if they are barred by the statute of limitations. With regard to proceedings that have already been completed, taxpayers can assert a claim for repayment via state liability ("responsabilidad patrimonial del estadolegislador").
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