I receive two tax certificates from Discovery for the same investment product. One is an IT3b, the other an IT3c. While the IT3c shows a source code of 4250, the IT3b does not show source codes. It shows "Gross foreign dividends", "Local interest voluntary", "Gross foreign interest" & "Local dividends (exempt)". It also shows withholding tax on 3 of them, and a "Net total".
When declaring my local interest earned, should I add just the "Local interest voluntary" amount from Discovery to my bank's IT3b amount for local interest total?