Question 1

When are Arizona tax lien auctions held?

Accepted Answer

Arizona tax lien certificate sales are held annually in February. All counties conduct their sales online. Registration opens in January, and investors must fund their bidding account before the auction begins. The exact dates vary by county — Maricopa County's sale is typically one of the largest and most closely watched. Always confirm the specific sale date and registration deadlines directly with the county treasurer's office.

Question 2

What is an over-the-counter (OTC) certificate in Arizona?

Accepted Answer

OTC certificates are tax lien certificates that went unsold at the annual February auction. They're available year-round at county offices on a first-come, first-served basis at the full 16% rate — no bidding required. The reason they went unsold is usually a characteristic that discouraged investors at auction (remote location, uncertain value, title complications). OTC certificates require more careful research, not less, but experienced investors find strong opportunities in Arizona's OTC inventory.

Question 3

What happens if the property owner never redeems in Arizona?

Accepted Answer

After 3 years from the original offering date, you can pursue judicial foreclosure through the Arizona Superior Court. You must first send a 30-day certified mail notice to the owner, then file a foreclosure action. The owner can still redeem at any time before the court enters judgment and the Treasurer's Deed is delivered. If judgment is entered in your favor, you receive a Treasurer's Deed — generally one of the cleaner deed types in tax investing, though a quiet title action may still be recommended before selling or refinancing.

Question 4

Is there a deadline for Arizona certificate holders to act?

Accepted Answer

Yes — under A.R.S. § 42-18127, a tax lien certificate and all subsequent tax payments become void if the holder fails to commence a foreclosure action within 10 years of the original purchase date. This hard deadline cannot be extended regardless of the property's value or amount invested. Active portfolio management and calendar tracking are essential for any investor holding Arizona certificates long-term.

Rule	Detail
Max interest rate	16% per year (A.R.S. § 42-18053)
OTC certificate rate	16% fixed — no bidding required
Foreclosure eligibility	After 3 years from original offering date
Pre-foreclosure notice	30-day certified mail notice required before filing
Hard expiration deadline	10 years from original purchase (A.R.S. § 42-18127) — cannot be extended
Redemption during foreclosure	Owner can redeem any time before Treasurer's Deed is issued
Deed type at foreclosure	Treasurer's Deed (via court judgment)

Arizona Tax Lien Investing Guide

How Arizona Tax Sales Work

Key Arizona Rules

Arizona Counties We Cover

What Liens Survive a Arizona Tax Sale?

Typically Extinguished

May Survive

Counties We Cover in Arizona