The Tax Registration Number and Organization Code of our factory will also be changed once the new name becomes effective, customers and suppliers please kindly notice about that.

更名后，我厂的税务登记号，组织机构代码等将一并更改，请各客户、供应商知悉。

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Taxpayer's ID number: the number on the tax registration certificate.

纳税人识别码：填写税务登记证号码。

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In addition to Preparer Tax Identification Number (PTIN) registration, the IRS will require certain paid tax preparers to pass a competency test by December 31, 2013.

FORBES: IRS Begins Competency Test Scheduling

But her state has its own income tax, so she had to register for a separate ID number to report and pay employee state tax withholding, and then had to fill out yet another registration for another ID number to file another regular report to pay state unemployment taxes.

FORBES: When Julia Tried to Start a Business