Identify a box in the "Other information" area as box 16. In the "Amount" box, enter the foreign income tax, if any, that was withheld from the gross foreign income you reported in Box 15 – Foreign income. Report the amount of the foreign income tax withheld in Canadian currency. The recipient of the T5 slip will need to know this amount to calculate their federal, provincial, or territorial foreign tax credits. If you cannot report the amount in Canadian currency, see Box 27 – Foreign currency.