• Endorsement provides the current certificate holder with the option of endorsing the current year's delinquent tax onto the original tax sale certificate.
• Subsequent payment of the delinquent tax will earn the same rate of interest as the original certificate.
• Colorado Revised Statutes, 39-11-119, provide a holder of a certificate of purchase may pay subsequent taxes on the property of which the buyer holds an unredeemed certificate, and this payment will be endorsed onto both the original certificate and the tax lien sale record in the Treasurer's office.

The Park County Treasurer will accept subsequent payments of taxes beginning August 1st. Endorsement notices are mailed to all current certificate holders approximately the third week of July.

Applications may be started after August 1st of the third year after the Tax sale in which the tax lien was purchased (for instance, a tax lien purchased in November, 2007, for the 2006 taxes will allow a deed application in August of 2010).