@MinhT1The post you mentioned above actually didn't answer my question as that post didn't mention if he/she used QBI in the previous year or not.
My situation is I used QBI last year, so can I opt out of using it this year? Or I have to continue to use it?
I recalled I read an article before that once QBI is applied in one year and it must be applied in the following years, but I am not sure. That's why I posted the question here.
Thanks.
