Form 668(Y) is the Notice of Federal Tax Lien filed in public records; it is not a levy served on a bank or employer.
Numbers covered by this guide
Form 668(Y)
Form 668Y
668(Y)
668Y
Form 668-Y
NFTL
Check the identifier and follow the instructions on your own notice.
Editorially reviewed by the Law Offices of Darrin T. Mish, P.A.•Updated October 1, 2026
General information only, not legal advice. Using this page does not create an attorney-client relationship. This information may be incomplete or out of date and is provided without any guarantee; follow the instructions and deadline on your own notice. Full terms and disclaimer
Notice
Form 668(Y) / Form 668Y / 668(Y) / 668Y / Form 668-Y / NFTL
Urgency
Critical
Deadline
Federal tax lien filed
Your first move
A Notice of Federal Tax Lien was filed. Review accompanying Letter 3172 for any CDP deadline.
See it explained
Form 668(Y) in plain English
Form 668(Y): what it means, in 30 secondsA 30-second overview from tax attorney Darrin T. Mish: what this notice is, the deadline, and your first move.
Form 668(Y), Notice of Federal Tax Lien, is the document the IRS files in public records to notify creditors of its legal claim against a taxpayer's property. A lien is a claim securing the tax debt. It is different from a levy, which is the taking of property.
What to review
Check the taxpayer name and identifying number, tax types, tax periods, assessment dates, and recording office. Obtain account transcripts if any period or amount appears wrong. The filing can affect credit and transactions involving real or personal property.
Appeal rights usually arrive separately
The IRS generally sends Letter 3172 after filing a Notice of Federal Tax Lien. That letter explains Collection Due Process rights and the deadline for requesting a hearing. Use the date printed on Letter 3172; do not calculate a hearing deadline from this page.
Release, withdrawal, and subordination are different
Paying or otherwise satisfying the liability can lead to lien release. In some circumstances, withdrawal removes the public notice, while discharge or subordination may help a particular property transaction. Each remedy has separate requirements.
If you received Form 668(Y) or Letter 3172, call us at (813) 229-7100 so the filing and any appeal deadline can be reviewed together.
This letter has a clock on it. Don’t run it out alone.
Free consultation with Darrin T. Mish, a Tampa tax attorney licensed since 1993 and admitted to the U.S. Tax Court. Bring the letter.