4464c Letter 2025. A 4464c letter basically says that the irs is holding onto your refund while they investigate your return more thoroughly.if the investigation shows that you should get a. If a letter 4464c or letter 4115c was prepared and it has been 14 days or less from this date, inform the taxpayer he/she will receive a letter within the next two weeks.

A 4464c letter basically says that the irs is holding onto your refund while they investigate your return more thoroughly.if the investigation shows that you should get a. Received the 4464c letter about a review and to verify one of the following income, withholding, tax credits.