BidMaricopa auction selection page
BidMaricopa Introduction Maricopa County
2018 Tax Lien Sale

1. The list of parcels included in the Tax Lien Sale of unpaid 2017 real property taxes will be available on Friday, January 19, 2018. Bidders can submit bids on the Treasurer's tax certificate auction web site,, starting on this date. Bids are due by the sale date, Tuesday, February 6, 2018.  If you do not have access to a computer, the Treasurer's Office will provide public access computers by appointment at designated locations.
2. To be eligible to bid, you must complete the following steps on the web site:
  1. Complete online registration
  2. Complete IRS Form W-9 or W-8BEN as applicable
  3. Submit a deposit (online via ACH)
  4. Establish a budget
  5. Receive bidder number assignment
A social security number or tax identification number must be provided for each buyer and must belong to the person listed on the W-9 form. The tax certificate list, redemption checks and 1099 interest earnings will be issued exactly as indicated on your W-9 form. Until the tax sale is complete, no changes will be made to the bidder number issued. A change of name or tax identification number will constitute an assignment and is subject to service charge for each certificate changed.
3. A deposit of 10% of your expected bids must be made prior to the close of any batch in which you intend to submit bids.  A minimum deposit of $500.00 is required for each bidder. All payments must be made via the Payments Page on the web site. Payments will not be accepted via any other means. There will be no exceptions to these requirements.
4. Bidding starts at 16% and interest is bid down until sold. Bids may be made in 1 percent increments. A "zero" interest bid will get the bidder the certificate with NO interest. When your bid is recognized as the low bid on the Results Page, you are obligated to pay for the certificate even if the bid was unintentional.
5. The properties will be auctioned in the order listed in the newspaper.  Some items listed in the newspaper and on the web site will not be auctioned due to payments being received after the list was prepared for publication.
6. After the sale, the successful bidders are given a date by which they must pay the balance due via ACH Debit on the Payments Page of the web site. A certificate of ownership and listing of certificates purchased is provided to each buyer. A bidder failing to make payment in the specified time will forfeit the deposit, and the certificates will be re-sold.
7. The Treasurer reserves the right to cancel or correct certificates issued in error. Interest payments may be affected by bankruptcies, U.S. Marshal seizures, property taken over by a receiver, etc.
8. Caution: This is not a sale of real property. It is a lien for the amount of delinquent taxes plus interest and other fees. Contact with property owners initiated by certificate owners to encourage payment at any time is not recommended. Contact or behavior of a certificate holder deemed unfair or deceptive may result in criminal prosecution.  An "Action to Foreclose" filed in the Superior Court three years from the sale date is the only method to compel payment.
We in the Treasurer's Office are happy to be of service to you and are available to assist you as needed.

Royce T. Flora
Maricopa County Treasurer

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