A tax lien is a legal claim by a government entity against a property when the owner fails to pay their taxes. This claim ensures that the government can collect the owed taxes, and it can affect the property owner's credit score. Tax liens can be placed on various types of property, including real estate and personal belongings. When a tax lien is issued, the property owner may face penalties, interest, and potential foreclosure if the debt remains unpaid. In some cases, the government may sell the lien to investors, allowing them to collect the owed taxes plus interest. This process can lead to significant financial consequences for the property owner.