1.By telephone(0800-867890)
2.By E-mail (0800-867890@mail.nta.gov.tw)
3.In writing
4.In person.
Regarding the reporting methods mentioned above, if the receiving agencies need to collect more evidence, they can notify the informants to provide additional materials within a limited time, or visit their home for interviews, or invite them to the office for explanations. (Paragraph 16 and 20 of Directions for the Handling of Seizures and Accusations for Tobacco and Alcohol-Related Products)