Currently separated and have restraining order but need my sons ssn to claim him as dependent. Is there a way to view his Ssn from last year

[-moon1999]

Filed my son as dependent now I don’t have his SSN so can I find them in last years ? 

[KittyM · Accepted solution]

If you have access to your last year's return and your son was a dependent on that return, then you will be able to see your son's SSN on that return.

If you don't have a copy of your return, you can file a Request for Copy of Tax Return with the IRS.