Doukhobors, who you may recall have something of a history of clashes with authority, have religious tax exemptions. The Unification Church, known colloquially as the Moonies, has managed to get religious tax exemptions. Hare Krishnas have had religious tax exemptions. Christian Scientists have tax exemptions. Do you need more, or are you just going to say "those aren't cults either".

Did Lev Tahor's sect apply for a tax exemption? If not, they most certainly didn't get it. It isn't automatic; you have to ask.