Tax on Social Security Benefits from a Foreign Country?
My mother is 78 years old. She has been a US permanent resident for 17 years. In the past, she has not qualified for filing a tax return because her only sources of income are from interest earned in her savings account, which did not reach the minimum amount for filing taxes. This last December 2007, she received a lump sum from Italy's Social Security Administration, for back payments owed by the Italian government for a pension my father (deceased) had in Italy as an Italian citizen and worker. My mother will continue to receive a social security pension from Italy on a monthly basis. The lump sum in social security benefits was taxed in Italy, as will the future monthly payments.
I am trying to figure out how to treat this lump sum in her 2007 tax return, but I am not sure how to do this. Does it need to be declared? If so, how? How can double taxation be avoided, since taxes are already deducted in Italy for all her pension payments? What forms does she need to file?
I would appreciate the answers to these questions.
Thank you very much!