Quick answerMissouri sells tax lien certificates for unpaid property taxes. Lien buyers can earn Interest at the rate specified in the certificate of purchase, not to exceed 10% per annum, on the purchase money up to the delinquent taxes plus costs of sale (no interest is owed on any amount bid in excess of taxes plus costs); subsequent taxes paid by the purchaser earn 8% per annum (RSMo 140.340). Bidding is by premium (highest bid), not by bidding the rate down.. Redemption: 1 year from the date of sale for first- and second-offering parcels (RSMo 140.340), with a defeasible right to redeem thereafter until the purchaser actually acquires the collector's deed; parcels sold at a third offering are sold with no right of redemption. Sales: Annual county collector's sale on the fourth Monday in August (RSMo 140.170). Jackson County and the City of St. Louis instead use judicial delinquent land tax sales under RSMo ch. 141 on court-set schedules. Governing law: Revised Statutes of Missouri ch. 140 (esp. 140.170, 140.190, 140.340); ch. 141 for Jackson County / City of St. Louis judicial sales.