H-4 visa
Encyclopedia
An H-4 visa is a visa
Visa (document)
A visa is a document showing that a person is authorized to enter the territory for which it was issued, subject to permission of an immigration official at the time of actual entry. The authorization may be a document, but more commonly it is a stamp endorsed in the applicant's passport...

 issued by the U.S. Citizenship and Immigration Services (USCIS) to immediate family members (spouse and children under 21 years of age) of the H-1B visa
H-1B visa
The H-1B is a non-immigrant visa in the United States under the Immigration and Nationality Act, section 101. It allows U.S. employers to temporarily employ foreign workers in specialty occupations...

 holders.

USCIS allows immediate family members of H visa holders (H-1A, H-1B, H-2A, H-2B, or H-3) to get H-4 visas to lawfully come and stay in the US. These visas are usually issued at the local US consulate office abroad. However, if the person is already in US, he or she can obtain H-4 visa by filing Form I-539 for change of status.

H-4 visa holders are not eligible to get a Social Security Number
Social Security number
In the United States, a Social Security number is a nine-digit number issued to U.S. citizens, permanent residents, and temporary residents under section 205 of the Social Security Act, codified as . The number is issued to an individual by the Social Security Administration, an independent...

 and cannot be employed, but they can hold a driver's license, open bank accounts, and get an Individual Taxpayer Identification Number
Individual Taxpayer Identification Number
An Individual Taxpayer Identification Number is a United States tax processing number issued by the Internal Revenue Service. It is a nine-digit number that begins with the number 9 and has a range of 70 to 99 in the fourth and fifth digit, example 9XX-70-XXXX or 9XX-99-XXXX...

 for US tax purposes.

Family members may alternatively be admitted in other non-immigrant categories for which they qualify, such as the F-1 category for children or spouses who will be students or the H-1B category for a spouse whose employer has also obtained approval of an H-1B visa petition to employ the spouse. An H-4 visa holder is admitted to the US for the duration of the primary (H-1B, H-2A, H-2B, or H-3) visa validity.

Since H-4 visa holders are not issued a social security number, an ITIN (Individual tax identification number) should be obtained before filing for joint tax returns by filing Form W-7. They are not authorized to work in the United States, though they are allowed to study.
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