How do Arizona tax sales work?

Arizona is a tax lien certificate state. Each February, county treasurers auction Certificates of Purchase (CPs) on delinquent properties. Investors bid down the interest rate from a maximum of 16%; the lowest rate wins. The investor pays the back taxes and earns interest until the owner redeems.

What interest rate do Arizona tax liens pay?

Arizona tax lien certificates carry a maximum statutory rate of 16% per year. The rate is bid down at auction, so the effective return depends on competition for each certificate.

When can I foreclose on an Arizona tax lien?

If the owner does not redeem, the certificate holder may file a judicial foreclosure action after 3 years from the date of the sale (and within 10 years). A successful foreclosure results in a treasurer's deed to the property.

Where are Arizona tax liens sold?

Each county Treasurer conducts the annual February auction, many through online platforms. taxsalesportal.com aggregates Arizona county tax lien listings into a single searchable database.

Arizona Tax Lien Sales — Complete Guide for Investors

Arizona is a pure tax lien certificate state. Investors buy Certificates of Purchase (CPs) at annual county auctions, earning interest until the property owner redeems. If the owner never redeems, the certificate can be foreclosed for a deed to the property.

The Arizona Tax Sale Process

1. Delinquency & Listing

The county Treasurer compiles delinquent parcels and publishes the list ahead of the annual auction.

2. Tax Lien Auction (February)

Each February, the Treasurer auctions tax lien certificates. Investors bid down the interest rate from 16%; the lowest rate wins the lien.

3. Redemption (3 Years)

The owner can redeem by paying the back taxes plus interest. Most certificates redeem during this period, returning capital plus interest.

4. Judicial Foreclosure

After 3 years (and within 10), an unredeemed certificate holder can file a foreclosure action to obtain a treasurer's deed.

Key Arizona Tax Sale Facts

Sale type	Tax lien certificate (CP)
Max interest rate	16% per year (bid down)
Auction authority	County Treasurer
Schedule	Annual, in February
Redemption period	3 years
Foreclosure	Judicial, after 3 years (≤10 years)

Due Diligence for Arizona Tax Liens

Property value vs. lien: Most liens redeem; underwrite for interest income, not for acquiring the property.
Subsequent taxes: You may pay subsequent years' taxes ("subbing") and add them to the certificate balance with interest.
Foreclosure cost: Budget for legal fees and a judicial action if you intend to take title.
Parcel quality: Some certificates are on low-value or unbuildable land — research the parcel first.

This guide is informational only and not legal advice. Arizona tax sale rules vary by county — always verify details with the county Treasurer before bidding.