The Spanish tax reform of 1845, approved in 1844, greatly changed the tax system of Spain. It established the basis for a system that continues to this day.
The executive council that came to power in 1844 was presided over by Narváez. It undertook a tax reform, proposed by a commission whose key figure was the brilliant but logical and orderly Ramón de Santillán. It was carried out by Finance MinisterAlejandro Mon. The reform broke the tax system of Antiguo Régimen and established a basis for taxation in Spain that remained intact to the end of the 19th century, and most of it continued well past that date, some remaining today. The prior system had separate tax regimes in the former Kingdom of Aragón, in Navarre, in the Basque Country and in the rest of Spain. It involved a great variety of taxes, most of them dating from the Middle Ages. The reform was largely along the lines of economic liberalism: legality, sufficiency and generality with a single unified fiscal system throughout the country, with the intention to eliminate barriers to economic growth. Internal customs barriers were eliminated along with such longstanding taxes as the diezmos, alcabala and millones. In general, there was a movement from indirect taxation to direct taxation. The new system involved five key taxes:
* A law on mortgages, which taxed the transfer, lease, and increase of rents on real estate.
The reform also constituted changes in customs fees.
Aftermath
The industrial and commercial subsidy was widely protested and resulted in a high level of fraud. The administrative apparatus of the Spanish government was poorly prepared for the new system and so tax collection was farmed to municipal governments and guilds. The consumption taxes were also widely protested. They were seen as falling disproportionately on the poor. The tax reform provided the basis for the recovery of Spain's finances during the reign of Isabella II,l and made a program of public works possible. The system remained essentially intact until 1900, when the effect of the loss of Spain's colonies in the Spanish–American War led to a further tax reform by Raimundo Fernández Villaverde.