Forget to include Schedule 1 - how to fix the issue

[rsherry8]

A friend of mine, with self-employment income did his/her income tax using Turbo Tax. Turbo Tax produced the tax return including Schedule 1. My friend has a Qualified business income deduction. However, the IRS did not allow for that deduction because Schedule 1 was not filed. As a result the IRS is asking for additional money. I believe that either my friend failed to include Schedule 1 or the IRS lost the form. The return was filed by mail. That is, it was a paper return.

Can my friend simply file the Schedule 1 now? I am thinking my friend should file form 1040X and schedule 1. Is that right?

[Affordabletaxes2021 · Accepted solution]

Did he receive correspondence from IRS regarding this matter? If so respond directly to the letter with Sch 1. Don’t file an amended return (Form 1040X). It takes several months to process it. Just respond to notice with information requested. There’s likely a fax number or instructions to upload your documents on the letter from IRS.