Quick answerDelaware sells redeemable tax deeds for unpaid property taxes. Lien buyers can earn Depends on the method: monition sales — 15% penalty on the purchase price (9 Del. C. § 8729); direct sales in Kent and Sussex Counties — 20% interest on the purchase money (9 Del. C. § 8776). Redemption: Depends on the method: monition sales — 60 days from Superior Court approval/confirmation of the sale (§ 8729); direct sales in Kent and Sussex Counties — 1 year from the time of sale, and no deed may be made until that year expires (§ 8776) Sales: Year-round as scheduled by county — New Castle County monition (sheriff) sales are held monthly, on the second Tuesday of the month; Kent and Sussex sales are scheduled by the county tax collecting authority and returned to Superior Court for approval Governing law: 9 Del. C. Chapter 87 (§§ 8701 et seq., Collection of Delinquent Taxes), esp. §§ 8729, 8776.