Nope. The $1200/$2,400 is going to be a prepayment of a credit generated on the 2020 tax return. So it is possible for someone to get a prepayment of the full amount of the credit and then not qualify for any of it. An individual that made $60k in 2019 and and $100k in 2020 would receive a check for $1,200 here in a couple months but would then not qualify for any of the credit when filing the 2020 return and would have to repay the full $1,200.
Same for a married couple except it would be $2,400 prepayment and an income jump from $145k in 2019 to $205k in 2020. Go from qualifying for the full credit to having to repay it next year.
It's going to be a clusterfuck.
EDIT - I don't know what the actual phaseouts are going to be, but this is the general idea of it. If any of you remember the $400 stimulus check from 2008/2009, that's how that credit worked, too.
EDIT2 - I don't remember, but they may not have made people pay the $400 back if they didn't qualify for it. Which means people were getting more than they were supposed to and got to keep it. So that's fun, too. Either way......clusterfuck.