Colorado vs Illinois Tax Lien Investing (2026)
Statutes verified Jul 23, 2026
For a retail investor, Colorado edges it overall (5.1/10 vs 4.8/10). The biggest single difference is penalty structure: Colorado scores 3, Illinois scores 7. Neither is "best" for everyone — match the state to your goal below.
- System:
- lien
- Max rate:
- Fed discount rate +9 pts, set each Sept 1 (14% for 2025); premium bids earn 0%
- Redemption:
- 3yr from sale before treasurer's deed application
- 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
14% (2025) rate but premium bids earn nothing and are not refunded
Penalty repeats each 6mo (max 9%/period since 2022) but Cook bids near 0%; post-HB 4537 surplus rules reduce windfall upside
Simple interest only; rate reset yearly at discount rate +9 pts (39-12-103)
Full 6-month penalty tranche owed even if redeemed on day 1 of period
3yrs from sale before treasurer's deed application
3yr default (extended from 2.5yr via HB 4537, eff. Jul 2026); slower capital recycle but more predictable window
Most counties run online sales (RealAuction/GovEase); county-level auctions
County-by-county sales with registration/deposits; Cook uses R.A.M.S. sealed bids
Online premium bidding is aggressive; premiums erode net yield
Institutional buyers dominate; penalty bid to 0% on quality parcels
Certificates sell at taxes+fees; small liens plentiful in rural counties
Individual liens can be small, but deposits and registration add friction
HB24-1056 deed path now ends in public auction; holder may get cash, not land
Strict take-notice/petition traps; sale-in-error can void the investment
Post-Tyler HB24-1056 (eff. 7/2024) rewrote the treasurer's deed process
HB 4537 (Jul 2026) rewrote key collection provisions; post-Tyler surplus rules still settling; new regime untested in court
County-held certificates assignable OTC from treasurers year-round
Unsold/forfeited liens resold via county trustee lists
Choose Colorado if…
- you want stronger auction access — Most counties run online sales (RealAuction/GovEase); county-level auctions
- you want stronger low capital entry — Certificates sell at taxes+fees; small liens plentiful in rural counties
- you want stronger otc availability — County-held certificates assignable OTC from treasurers year-round
Choose Illinois if…
- you want stronger penalty structure — Full 6-month penalty tranche owed even if redeemed on day 1 of period
- you want stronger effective yield — Penalty repeats each 6mo (max 9%/period since 2022) but Cook bids near 0%; post-HB 4537 surplus rules reduce windfall upside