You can check the status of a mailed federal amended tax return, Form 1040-X, at this IRS website - https://www.irs.gov/filing/wheres-my-amended-return
Note the message on the website -
COVID-19 Mail Processing Delays
It’s taking us longer to process mailed documents including:
- Paper tax returns, and
- All tax return related correspondence.
We are processing all mail in the order we received it.
Do not file a second tax return or call the IRS.
