Deductions & credits

thanks for the detailed explanation.  I find this  particular topic of cb/cf very difficult to understand.

 

if I may ask clarifying questions (sorry if im just rephrasing what you already said)...

1 for TY2019, if i have excess FTP (foreign taxes paid), I MUST first try to do carry back  but if in TY2018 I used up the full allowance or if had carry-fwd , then this option is obviously impossible

2. however, if I still had 'unused capacity' in that TY2018, but I dont want the hassle of filing an ammended ty2018 return... can i voluntarily lose that 'unused capacity' and just subtract it from my TY2019 excess and carry fwd that lowered amt into TY2020?

3. why do you say that   c/f  rarely used ? is it because once you start generating passive dividends year after year that create foreign taxes paid that go over the limit... that you never get a chance to use them in the carry fwd years?

 

Thx!