Assuming that what you are talking about is soemthing like a mutual fund which has invested in foreign funds and therefore has foreign income on which foreign taxes were paid on your behalf. You are trying to get credit for that foreign taxes paid. Right ?
In such a case , your broker and /or the back-up sheet to your Broker's Consolidated Report will detail the foreign % of holding for the specific fund. ---- thus it will say Fund XYZ --- various countries 13%. You then multiply this percentage by your total honding in that fund to come up with the value of your foreign holdings -- which generated the foreign income.
