Please note that the SSN is a secure number. Do not give this number out over the phone or email. Additionally, do not laminate your SSN card.

• Harvard students receiving income from the University, including fellowships, stipends, on-campus employment wages, etc., must report the SSN to the appropriate payroll or student accounts office. Please note, the HIO does not collect or require your SSN.

1. Login to your Harvard Sprintax Calculus account
2. Input the SSN
3. Print the new Summary sheet, if your determination changes
4. Upload the Summary sheet and SSN notice to the Harvard Office of the Controller.

• If you are working off-campus with off-campus work authorization, you must report the SSN to your employer's payroll or HR office.
   
• If you have previously obtained an ITIN, you will need to contact the IRS to link the ITIN and SSN numbers. Please find the below information directly from the IRS:

What do I do when I am assigned a social security number (SSN)?

Once you receive a SSN, you must use that number for tax purposes and discontinue using your ITIN.  It is improper to use both the ITIN and the SSN assigned to the same person to file tax returns.  It is your responsibility to notify the IRS so they can combine all of your tax records under one identification number.  If you do not notify the IRS when you are assigned a SSN, you may not receive credit for all wages paid and taxes withheld which could reduce the amount of any refund due.  You can visit a local IRS office or write a letter explaining that you have now been assigned a SSN and want your tax records combined.  Include your complete name, mailing address, and ITIN along with a copy of your social security card and a copy of the CP 565, Notice of ITIN Assignment, if available.  The IRS will void the ITIN and associate all prior tax information filed under the ITIN with the SSN. 
Send your letter to:
     Internal Revenue Service
     Austin, TX 73301-0057