What is Tax Lien?

Written by Alberto MolinaNumbers checked by Kyle SowellLast updated: October 2026

A tax lien is the legal claim a taxing authority holds against a property for unpaid property taxes — and property-tax liens sit senior to almost everything, including mortgages. In tax-lien states, the authority sells the lien itself at auction: the investor pays the delinquent taxes and earns statutory interest from the owner, who can redeem by repaying with interest within a statutory period. If the owner does not redeem, the lien holder may foreclose through the process state law provides. Lien investing is a yield-and-procedure business, not a house-buying shortcut: most liens redeem. General information, not legal advice.

The formula / structureInvestor Return (if redeemed) = Taxes Paid × Statutory Interest Rate × Time Held — rates and terms are set by state law and auction bidding.

Tax Lien: a worked example

Worked example. An example lien: $6,200 of delinquent taxes sold at auction in a lien state. The owner redeems 14 months later, repaying the $6,200 plus the interest the statute and the winning bid set. The investor never owned, entered, or improved the property — the investment was the lien, its seniority, and the paperwork, all verified before bidding.

What affects Tax Lien

State law — interest rates, redemption periods, foreclosure procedure
Auction bidding (rates are often bid down)
Lien position and any competing tax years
Property value relative to the lien (the foreclosure backstop)

General information, not legal advice. Statutes and timelines vary by state and change — verify against current law or a local attorney before acting.

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Topic hubLegal & Process
TermTax Deed — What a buyer receives at a tax sale in a tax-deed state: the property itself, sold for unpaid taxes.
TermRedemption Period — The window after a tax or foreclosure sale when the former owner can reclaim the property by paying what's owed.
TermJudicial Foreclosure — Foreclosure through the courts — the lender sues, a judge orders the sale.