The whole process took about 10 months. Here's my timeline:
- March 10, 2021: Mailed 1040X for 2019
- April 15, 2021: IRS website says they've received my return
- August, 2021: the dreaded "Your amended return was received on April 15, 2021. However, it has not been processed. We apologize for any inconvenience. Please call XXX-XXX-XXXX extension 623, between the hours of 7 a.m. and 7 p.m., Monday through Friday. You will need a copy of your amended return."
- August, 2021: I called the number and after about 2 hours an agent actually answered. She checked my account and said they just started processing my return, ignore the error message, and don't call again.
- January 7, 2022: "Your account was adjusted on January 07, 2022. Within three weeks, you will receive a notice that explains the adjustment."
- January 10, 2022: We're getting something in the mail from the IRS today. I hope it's a check!
