I have the same problem. Yes, there is a 'source' selector, but no line to enter the actual amount.

For me, on the left of the 'source' selector, the page reads "Interest from Canadian sources" Box 13. Are you missing this box?

Nope, not missing it after all. I either 1) focused on the right so long I didn't see the entry on the left or 2) it appeared while I was blinking... or refreshing the page. 🙂 thanks for the rapid comment!

OMG, I did the same thing - never looked at the left side!

The right answer. Thx.

There is a selector next to box 13 to select the source of the income

I received interest on GICs but this would not be bond interest.  I usuallu report it on line 121 on te tax form.

I know what the interest is just how do I put it in box13