Furthermore just to clarify this matter once for all. Form 4852 is not needed, you know why? Because it substitutes Form 1099R that is not applicable to Foreign Social Security Pensions by definition.
Form 4852 in fact is referred to Distribution from Annuities and Retirements Plans, Pension supported by investment funds, Profit Sharing Plans , IRA, Insurance Contracts etc and all these have nothing to do with a Foreign Social Security Pensión that it’s paid by the Social Security Administration or equivalent agency of a foreign country.
