The tax return number is the number used by the IRS to identify taxpayers. It has 9 digits, starting with 9 characters, and the fourth digit is 7 or 8, such as 9XX-7X-XXXX. The tax return number is sent to those who can't get the social security number. Regardless of the status of immigrants, tax numbers will be issued. The tax number is issued to residents or non-resident foreigners who need to pay taxes according to the tax law.

The tax bureau is different from the labor bureau. Whether to work legally is not the purpose of law enforcement, but the main purpose is to pay taxes legally. Individuals must be obliged to submit tax returns and submit tax forms to obtain tax return numbers. The obligation of individual tax declaration is self-employed individuals with an annual income of more than 400 dollars, single individuals with an annual income of more than 7,800 dollars, and couples with an annual income of more than 65,438 dollars+05,600 dollars. The U.S. personal tax declaration number is for the IRS to enforce the U.S. tax laws and help people who need to pay taxes but don't have a social security number to pay taxes.

A person with an American personal tax return number does not prove that you can work legally in the United States, and you do not enjoy the American social security fund and low-income tax credit.