Arizona vs Illinois Tax Lien Investing (2026)
Statutes verified Jul 23, 2026
For a retail investor, Arizona edges it overall (6/10 vs 4.8/10). The biggest single difference is legal stability: Arizona scores 9, Illinois scores 3. Neither is "best" for everyone — match the state to your goal below.
- System:
- lien
- Max rate:
- 16%/yr simple bid-down
- Redemption:
- 3yr min 10yr max
- System:
- lien
- Max rate:
- 9% max penalty bid per 6-month period (P.A. 102-363, eff. 1-1-2022)
- Redemption:
- 36mo (3yr) default, 1yr vacant/commercial; HB 4537 extends from 30mo (eff. Jul 10, 2026)
Head-to-head: 9 dimensions
16% ceiling but big-county CP rates bid to low single digits online
Penalty repeats each 6mo (max 9%/period since 2022) but Cook bids near 0%; post-HB 4537 surplus rules reduce windfall upside
Simple interest at bid rate from March 1 (ARS 42-18153); no penalty floor
Full 6-month penalty tranche owed even if redeemed on day 1 of period
3yr minimum hold before Superior Court foreclosure (ARS 42-18201)
3yr default (extended from 2.5yr via HB 4537, eff. Jul 2026); slower capital recycle but more predictable window
County sales online via RealAuction (Pima 2026); near-statewide coverage
County-by-county sales with registration/deposits; Cook uses R.A.M.S. sealed bids
Heavily institutional online sales; funds dominate Maricopa/Pima
Institutional buyers dominate; penalty bid to 0% on quality parcels
CP liens start at back taxes; many certificates a few hundred dollars
Individual liens can be small, but deposits and registration add friction
Judicial foreclosure required after 3yrs; well-worn process but adds cost
Strict take-notice/petition traps; sale-in-error can void the investment
ARS 42-18101 to 42-18204 regime stable for decades; predictable case law
HB 4537 (Jul 2026) rewrote key collection provisions; post-Tyler surplus rules still settling; new regime untested in court
State CP assignments sold OTC online Apr 1-Dec 15 (Pima via RealAuction)
Unsold/forfeited liens resold via county trustee lists
Choose Arizona if…
- you want stronger legal stability — ARS 42-18101 to 42-18204 regime stable for decades; predictable case law
- you want stronger auction access — County sales online via RealAuction (Pima 2026); near-statewide coverage
- you want stronger otc availability — State CP assignments sold OTC online Apr 1-Dec 15 (Pima via RealAuction)
Choose Illinois if…
- you want stronger penalty structure — Full 6-month penalty tranche owed even if redeemed on day 1 of period