Final answer:
An IRS lien is valid for ten years.
Step-by-step explanation:
An IRS lien is valid for a period of ten years.
An IRS lien is a claim by the government on a taxpayer's property to secure payment of a tax debt. It is usually filed when a taxpayer owes unpaid taxes.
Liens generally last for ten years from the date of assessment, which is the date the IRS officially records the tax debt. After ten years, the lien expires unless the IRS renews it.