https://www.lexpera.com.tr/resmi-gazete/25-09-1999/23827 monthly 2026-10-30T14:34:15Z https://www.lexpera.com.tr/resmi-gazete/metin/gelir-vergisi-genel-tebligi-23827-seri-no-227 1999-09-25T00:00:00Z