The national tax number refers to the tax registration certificate number of the national tax. The tax registration certificate numbers of the national tax and the local tax are the same, that is, the individual is the taxpayer's ID number.

For taxpayers who have obtained 9 organization codes of Technical Supervision Bureau, the taxpayer identification number adopts 6 administrative division codes plus 9 organization codes of Technical Supervision Bureau. The purpose of citing 6-digit administrative division codes is to facilitate the first assignment of codes, prevent duplicate codes, and ensure that taxpayers get the only taxpayer identification number in China, without any semantics.

The newly developed software shall not separately quote the zoning codes of the first six digits of the taxpayer identification number. If the existing software developed by the State Administration of Taxation uses the zoning codes of the first six digits of the taxpayer identification number, the State Administration of Taxation will propose a unified solution.

Extended information natural person taxpayers shall provide the taxpayer identification number to the tax authorities or withholding agents when handling tax-related matters such as tax declaration, tax payment, tax refund application, tax payment voucher issuance and tax inquiry. When handling tax-related matters for the first time, taxpayers shall present valid identity documents to the tax authorities or withholding agents, and submit relevant basic materials.

The tax authorities shall hand over the taxpayer identification number to the natural taxpayer or inform the taxpayer through the withholding agent, and provide convenience for the natural taxpayer to inquire about its taxpayer identification number.

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