Earnings are immaterial to getting the missing stimulus money ... so if you did not get all you were entitled to in advance then you must file a 2020 return to get the missing amount. There is no NON Filer option this year ... you simply file a regular return.
If you qualify AND if you wait until mid January THEN you can use one of the 10 IRS FREE FILE options to file a fed & state return for free ... but you must be patient. https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free
IRS Free File: Closed until January 2021
IRS Free File is closed for the 2020 tax season. Check back in January for Filing Season 2021 opening details.
For Filing Season 2021, you must make $72,000 or below to use one of the 10 IRS Free File partner offers.
