A.R.S. § 42-18152: When lien may be fully redeemed; partial payment refund

A. A real property tax lien may be fully redeemed at any time:

1. Within three years after the date of tax lien sale.

2. After three years but before the delivery of a treasurer's deed to the certificate of purchase holder or the certificate of purchase holder's heirs or assigns.

B. A lien that has been partially redeemed under section 42-18056, subsection C must be fully redeemed before the delivery of a treasurer's deed to the purchaser.

C. The county treasurer shall refund all partial payment amounts impounded under section 42-18056, subsection E to the person or persons or their heirs or assigns within thirty days after delivering the treasurer's deed to the purchaser or entry of a judgment directing the sale of the property for excess proceeds pursuant to article 6 of this chapter.