An average of more than 500 complaints per day. This is the volume of grievances handled by the economic-administrative courts—bodies attached to the Ministry of Finance—an essential avenue for challenging tax assessments before resorting to the courts, according to regulations. It represents a veritable avalanche of work for these entities. However, in 2024—according to the latest available data—complaints decreased by 17.87% compared to the previous year, reaching 196,442. Conversely, the number of cases resolved, which reached 222,737, increased by 14.20%. The economic-administrative courts in Madrid lead the way in complaints, with more than 33,000; followed by those in Andalusia, with 31,000, and those in Catalonia, with 30,395—the three most populous autonomous communities.