Other requirements also apply. You must be a U.S. citizen or resident alien. While most of the $1,400 payments have been sent, additional checks continue to go out each week. Here's a look at who still stands to receive the money. 'Plus-up' payments Even if you already received your third stimulus check, you may qualify for a "plus-up" payment. The $1,400 stimulus checks initially sent were based, in general, on 2019 tax returns. But once your 2020 tax return is processed, you may qualify for more money, particularly if your income dropped last year or if you added a dependent to your family.