I was incarcerated in 2020 and missed the deadline for applying for stimulus check so I need to know which tax forms to fill out .I had no income

You must file an income tax return to receive any missing stimulus payments, even if you had no income. The IRS is no longer sending out stimulus payments. Instead the missing amounts will be included in your tax “refund” as a Rebate Recovery Credit.

Use the Free Edition of TurboTax. Fill out all your personal information. Skip the income and deductions sections. You will eventually come to a screen Let’s make sure you got the right stimulus amount. Enter $0 for the first and second payments.

The IRS will allow you to e-file a tax return with no income in order to claim the stimulus payments.