Pursuant to Arizona Revised Statute 42-18151:
A. A real property tax lien that is sold under article 3 of this chapter may be redeemed by:
1. The owner.
2. Any person that wants to pay on behalf of the owner by making a charitable gift.
3. The owner's agent, assignee or attorney.
4. Any person who has a legal or equitable claim in the property, including a certificate of purchase of a different date.
B. A person who owns an interest in real property less than the whole may redeem a tax lien against that interest as a percentage of the entire liability reported by the county assessor by paying the proportionate part of the whole amount due.
IF REDEEMED BY THE AGENT, ASSIGNEE OR ATTORNEY, OR BY ANY PERSON HAVING A LEGAL CLAIM IN THE PROPERTY, AFFIDAVIT OF REDEMPTION IS REQUIRED.
IF OWNER OF RECORD IS APPOINTING SOMEONE AS THEIR AGENT, AN AGENT TO REDEEM IS REQUIRED.