How do you file a complaint with IRS?

To file a complaint with the IRS, you can submit Form 14157, "Complaint: Tax Return Preparer," if your issue involves a tax preparer. If your complaint relates to other IRS services or issues, you can call the IRS at 1-800-829-1040 or visit their website to find appropriate forms and procedures. Additionally, you can report fraud or abuse anonymously through the IRS Whistleblower Office. Be sure to include any relevant details and documentation to support your complaint.