LETTER 4364C

IRS Letter 4364C is a notification letter sent to taxpayers who have filed an amended tax return (Form 1040X). This letter informs the taxpayer that the IRS has processed the amended return and may have made some changes to it. The letter will explain what changes, if any, the IRS made and how those changes affected the taxpayer’s refund or balance due.

• You filed an amended tax return to make changes to your original return, such as correcting an error or claiming a deduction that you missed the first time.
• The IRS made changes to your original tax return during an audit.
• The IRS processed your amended return and discovered that you owe additional taxes or are entitled to a larger refund.

• Read the letter carefully. The letter will explain what changes, if any, the IRS made to your amended return and how those changes affected your refund or balance due.
• Review the enclosed copy of your amended return. Compare the amended return with the original return to see what changes the IRS made.
• If you agree with the changes, you do not need to take any further action. The IRS will process your amended return and send you a refund or bill, if necessary.
• If you disagree with the changes, you can contact the IRS to dispute them. You will need to provide documentation to support your claim.

• Gather your documentation. This may include receipts, invoices, and other documents that support your claim.
• Write a letter to the IRS explaining why you disagree with the changes. Be sure to include your name, Social Security number, and the date of the IRS letter you received.
• Attach any supporting documentation to your letter.
• Mail your letter to the IRS address that is listed on the letter you received.