The National Taxation Bureau of the Northern Area (NTBNA) indicated that according to Enforcement Rules of Illegal Tax Evasion and Report, the accuser should provide his or her name and address, as well as the name and address of the accused, and specific evidence of illegal tax evasion. If there are any deficiencies, the tax authority should notify the accuser to provide the missing information within ten days, Otherwise, the case will be rejected.
       The NTBNA explains that NTBNA's service region contains 9 counties which comprise 24 sections. An informant may report the tax evasion by means of written communication, oral communication, email, or contact the National Taxation Bureau using the toll-free number 0800-000321.