Definicija: A person or corporation who does not file a tax return by the required date. In general, a person who has filed taxes once must continue to do so for the rest of his/her life (or existence, if a corporation). A non-filer may be subject to interest, late fees, and other penalties.
Vir definicije: https://financial-dictionary.thefreedictionary.com/Non-Filer
Vir - besedilo: Handbook on Effective Risk Assessment, Country-by-Country Reporting, OECD, September 2017