4. Extraordinary expenses due to exceptional circumstances

Regulations: Art. 37.4.3 Regulation Personal Income Tax .

See also common rule 2 of Annex III Order HFP /1172/2022, of November 29 ( BOE of December 1).

When the development of the activity has been affected by fires, floods, subsidence or other exceptional circumstances, which have determined extraordinary expenses outside the normal process of carrying out the activity, the interested parties may reduce the resulting net income by the amount of said expenses.

To do so, taxpayers must inform the Administration or Delegation of the State Tax Administration Agency corresponding to their tax domicile of this circumstance within 30 days from the date on which it occurs, providing, for this purpose, the corresponding justification and mentioning, where appropriate, the compensation to be received due to such alterations. The tax authorities will verify the certainty of the cause that motivates the reduction in income and its amount.