okay - this is going to be easy
The stimulus payments are REALLY based on your 2020 tax return. Nothing about prior years matters. Just fill out the 2020 tax return and it'll take you through a series of questions about stimulus. whatever you are due will be on Line 30 for the tax return.
The 1st stimulus is already programmed in; I suspect that before you can file at the end of January, the 2nd stimulus will be programmed in. But you want to wait to file, until you know the 2nd stimulus is part of the calculation to save a future headache obtaining it. Patience will be a virtue this tax season.
