Spanish tax reform of 1845

It undertook a tax reform, proposed by a commission whose key figure was the brilliant but logical and orderly Ramón de Santillán.

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.

The new system involved five key taxes: The reform also constituted changes in customs fees (tariffs).

The tax reform provided the basis for the recovery of Spain's finances during Isabella's reign and allowed a program of public works.

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.