Required Documents 

1. Taxpayer's identity card (ID card); people who are limited in capacity can also attach their identity cards to check their information.
2. If the applicant is a foreigner, the Passport shall be verified.
3. In the case that the applicant is a person of the Mainland China area, document required should be the Travel Pass or Resident Certificate for the Taiwan area issued by National Immigration Agency, ROC.
4. Inquiring about data for children under 20-year-old, Identity card (ID card) of legal representative and Household Registration Certification of children under 20-year-old shall be provided.
5. If taxpayer authorizes agent to apply for enquiries about various income data, the documents required shall be the Letter of Mandate/Delegation and agent's ID card (ID card). If the applicant's ID provided by agent is a copy, the applicant or agent shall guarantee that the copy is consistent with the original and retain the copy for future reference.