Was confused when was being asked this question.
Initially I put yes since after filing in 2020, IRS did send me a check for the stimulus - but now I realized they are asking me if I received the stimulus before, not after. After I checked yes, the due amount increased by 1800 to the IRS. What can I do to rectify this? I can't find this in the amendment process for the return
The IRS won’t give you the same stimulus twice. If you received the payment after you filed your original return but claimed you never received the stimulus, IRS will either correct or reject your amendment. They have records of what they paid you.
The 2020 tax form (filing date April 2021) was written under the assumption that most Americans received their payments in 2020 or by early January 2021. That's why the question is worded that way.
If you received the stimulus and entered the correct amount, your amended return is correct.
There were two 2020 stimulus payments — one and two.
If you still need to fix your amended return: