I would be very careful adding any foreign social security income on top of US Social Security Income on the tax form. Foreign Pensions and Foreign Income period and should be entered as such. My UK Company Pension and also my UK Old Age Gov Pension (equivalent of US Social Security) are both entered as Foreign Income and fully taxed. As my UK Gov Pension is a State Pension it is not reported to FinCen. However my UK Private Pension is reported as a Foreign Account to FinCen.
