National tax revenue totaled $3.82 trillion in 2018, an increase in nominal terms of 31.2% with respect to 2017.
In terms of inflation-adjusted revenue, there was a drop of 1.8% year-on-year, the third consecutive year showing this trend.
Measured in terms of Gross Domestic Product, revenue was 24.1% of GDP, 0.3 percentage points below that recorded in 2017, continuing the trend started in 2016.
As for the allocation of tax revenue, the national government and the social security system received less resources for the equivalent of 0.3% of GDP each, which contrasts with the increase of 0.4% of GDP that was allocated to the provinces.