This is the 1892nd most frequent Portuguese word.
tributário
"Tributário" means "related to taxes or taxation."
The word 'tributário' is an adjective here, modifying 'sistema' to mean 'related to taxes'.
O sistema tributário do país é complexo.
The country's tax system is complex.
In this sentence, 'tributários' is used as an adjective describing the noun 'especialistas', indicating their expertise related to taxation.
Consultamos especialistas tributários para entender as novas regras.
We consulted tax specialists to understand the new rules.
Here, 'tributária' acts as an adjective qualifying 'legislação', referring to laws concerning taxes.