Letter 3172- Notice of federal tax lien

The IRS uses Letter 3172 to send federal tax lien to taxpayers when they owe a large amount of back taxes.

If you have received the 3172 letter, it means that you owe a lot of taxes to the IRS. The IRS letter 3172 is similar to the IRS Form 668Y, in that they both a notice of federal tax lien.