How diligent are the tax authorities in Spain in ensuring you pay your taxes? Favourite Spanish Property Insight › Forums › Spanish Property Forums › Other Subjects › How diligent are the tax authorities in Spain in ensuring you pay your taxes? This topic contains 0 replies, has 1 voice, and was last updated by bc1050 1 year ago. Author Posts June 28, 2017 at 8:55 pm #213619 bc1050Participant Are most people honest about this? Some people and businesses I know would indicate otherwise and they seem to get away with it. Author Posts You must be logged in to reply to this topic.