She needs to use her SSN on her current year tax return and no longer use her ITIN. She also needs to notify the IRS so that they can combine all of her records. To do this she can either visit and IRS office in person or write a letter explaining that she now has a SSN and she wants to have her tax records combined. The letter must Include her complete name, mailing address, and ITIN along with a copy of your social security card and a copy of her ITIN. Send the letter to:
Internal Revenue Service
Austin, TX 73301-0057
