Glossary / Tax lien certificate
Tax lien certificate
Think of the certificate as a receipt with legal teeth: it proves you paid the taxes, fixes the rate the owner must pay to clear the lien, and starts every statutory clock that matters — the owner's redemption window, your earliest foreclosure date, and the certificate's own expiration. Counties issue certificates at the sale; the amounts on them (taxes, penalties, interest, sale costs) are the base on which your return is calculated.
Certificates are transferable in most lien states (see Assignment), which creates a secondary market, but the original certificate's dates and amounts follow it. Lose track of the paper — or of its deadlines — and the position degrades: Florida certificates expire after seven years without a deed application, and Indiana liens terminate if the holder misses the six-month deed-petition window after redemption.
Read a certificate the way an underwriter would: four numbers and three dates. The numbers are the face amount (taxes, penalties, interest and costs at sale), the rate or penalty basis your return accrues on, any premium paid (tracked separately because most states pay nothing on it), and subsequent taxes you've added since. The dates are the sale date, the earliest endgame date (deed application or foreclosure eligibility), and the expiration date. Every portfolio system in this business — a spreadsheet is fine — is just those seven fields kept current per certificate. Counties differ in what the physical or electronic certificate shows, but the underlying county record controls if the two ever disagree: verify amounts against the issuer, never against a seller's summary.
In practice: Kentucky calls its certificates 'certificates of delinquency' and allocates them by drawing at 12% fixed; New Jersey certificates carry rates bid down from 18%, with premiums governed by §54:5-33; Ohio certificates (large counties only) bid down from 18% with subsequent taxes accruing at 18%.
See it in your state's law
Kentucky tax sale laws · New Jersey tax sale laws · Ohio tax sale laws · Tax lien investing, step by step
Definitions verified 2026-10-30 against the sourced state-law dataset. Educational only, not legal advice.