Glossary / Tax lien

Tax lien

When a property owner misses a tax payment, the county does not simply wait — it records a lien, a formal claim that must be satisfied before the property's title is clear. The lien grows with statutory interest and costs and typically holds a priority position ahead of most other claims against the property, which is precisely what makes it saleable: an investor can step into the county's position with the property as collateral.

A tax lien is a claim, not ownership. Holding the lien gives the investor the right to be repaid with interest on redemption, and — after statutory waiting periods and process — the right to pursue the property itself through foreclosure or a deed application. In the 17 pure lien jurisdictions in our law library (plus the hybrid states' lien lanes), the lien is the product the whole market is built on.

Priority is the lien's economic superpower and its legal boundary. A property-tax lien generally primes most private claims, which is why owners and mortgage holders redeem at high rates: anyone with money at stake in the property is motivated to clear the senior public claim. But priority is not absolute — federal tax liens operate under their own federal rules, and bankruptcy law can stay enforcement regardless of state priority. The lien also decays: states give the underlying claim a life (the certificate expirations and foreclosure windows elsewhere in this glossary are the lien's fuses), and owners can challenge defective sales. Understanding a tax lien means understanding three things at once — the claim's priority, the collateral behind it, and the clocks running on it.

In practice: Arizona's liens arise under A.R.S. Title 42, Ch. 18 and sell each February at up to 16%; Iowa's lien pays a fixed 24% under Iowa Code ch. 446–447; Florida's liens are sold as certificates every May–June under Fla. Stat. Ch. 197.

Definitions verified 2026-10-30 against the sourced state-law dataset. Educational only, not legal advice.