I am due to renew my dependents ITIN. My wife has her SSN based on her H4-EAD and ITIN as well. Should I need to renew her ITIN? Is it illegal to have both ITIN and SSN?

[bluedeb · Accepted solution]

No, you should not renew her ITIN.  An ITIN is a tax processing number that is issued by the IRS for individuals who are not eligible for an SSN, such as a foreign national or nonresident alien, but are required to file certain federal tax or information returns. ... No one should have both an ITIN and an SSN.