That analysis isn't normally a finely tuned racing machine.  It's very possible that it hasn't been properly tuned for the credit yet.

Yeah--I don't rely on the numbers as exact, but it's normally close-ish.  I have clients that received the full stimulus amounts and are definitely within the income limits, but the analysis is trying to give them more.  Hard to plan when an extra $900 is added incorrectly.  Guess I'll keep waiting and hope an update will catch it.