For us persons, this must be your Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN).

对于美国的人，这一定是您的社会安全号码(SSN)或个人的纳税人识别号码(ITIN)。

youdao

Please provide your taxpayer identification number in order to avoid backup withholding of US tax at the rate of 31% on interest, dividends and other reportable payments credited to your account.

请提供您的纳税人识别码，以避免利息、股息或其它应申付款31%之备查扣缴税进入您的帐户。

youdao

What this means for you: if you open a personal account, we will ask for your name, address, taxpayer identification number, date of birth, and other information that will allow us to identify you.

如果您申请个人账户，我们需要您提供姓名，地址，税号，生日等其他信息以证明您的身份。

youdao

New Form 2848, Power of Attorney, allows for only one Taxpayer Identification Number and client signature.

FORBES: Tax Filing Season 2012: Claudia's Crystal Ball

The Internal Revenue Service has announced updates in procedure with respect to Individual Taxpayer Identification Number (ITIN) requirements.

FORBES: In Effort to Curb Immigration Related Fraud, IRS Changes ITIN Procedures

Specifically, backup withholding of 28% is required if a payee fails to furnish a correct taxpayer identification number to the payor.

FORBES: IRS Offers Relief for Credit Card Reporting Requirements