A voluntary lien is a type of lien that a property owner willingly places on their property. This type of lien is often used as collateral for a loan, such as a home equity loan or a personal loan. Property owners may also voluntarily place a lien on their property to secure payment for a service or a debt. In contrast, involuntary liens are imposed on a property without the owner's consent, such as tax liens or judgment liens. Voluntary liens can be removed once the debt is paid or the service is rendered, whereas involuntary liens may need to be satisfied through legal process.