2026 Tax Lien Rules Update

Last verified: October 12, 2026. Statements below come from the official sources linked beside them. Items marked unverified could not be confirmed from an official source and should not be relied on. Rules change; confirm the current statute and county procedure before you bid. This is education, not legal, tax, or investment advice.

Historical course correction. The original printed course (Illinois, page 150; Colorado, page 114) predates these changes. Where it says Illinois pays 18% per six months or 36% a year, describes a direct Illinois deed petition, says a Colorado lienholder can "simply apply" for a deed in about six months, says subsequent taxes earn that year's rate, or says nonredemption leads to owning a property "free and clear," use this page instead.

Status: enacted law. House Bill 4537 was signed as Public Act 104-0553 on July 10, 2026 and took effect immediately. Most changes apply to certificates issued on or after that date.

• Penalty ceiling is now 9%. Bidders still bid the penalty down; no bid above 9% of the tax amount is accepted (35 ILCS 200/21-215). The penalty is charged on the certificate amount and grows in steps by six-month period redeemed (21-355). The winning bid is not a guaranteed annual yield: early redemption, a low winning bid, and costs can make the result much smaller.
• Redemption is generally 3 years from the sale date, but 1 year for vacant non-farm property, commercial or industrial property, and buildings with 7 or more residential units (21-350). These changes apply to certificates issued on or after July 10, 2026; older certificates follow the rules in force when issued.
• No automatic ownership. After nonredemption the holder petitions the circuit court under revised Sections 22-40 and new 22-42, which create a public tax-deed auction and surplus protections for the former owner. Do not assume the certificate holder ends up with the property.
• Not every lien is open to private bidders. Counties may acquire certificates as trustee (21-90), and counties of 3,000,000 or more (Cook) may run a pilot to acquire certificates for up to 100 properties per sale (new 21-191).

Sources: Public Act 104-0553 · 21-215 · 21-350 · 21-355 · 22-40

Unverified: the detailed tax-deed auction steps, surplus calculation and fees in new Section 22-42; whether a county pilot is active. We have not published Illinois numerical return examples because the full redemption formula has not yet been checked line by line.

Status: enacted law. SB26-144 passed both chambers and was signed by the Governor on May 19, 2026, as Session Laws Chapter 135, effective June 1, 2026 — see the official bill status. We have not yet reviewed the full signed act line by line. Anything still described as a proposal elsewhere is not law until enacted.

• Deeds now go through a public auction. The original lienholder is no longer guaranteed the treasurer's deed. The revised process applies to any treasurer's deed issued on or after June 1, 2026, regardless of when the lien was bought or the deed applied for.
• Three years is eligibility, not a finish line. After three years an unredeemed holder may apply for a deed, but the owner can still redeem up to the deed auction. There is no fixed processing time — the older "about six months" estimate is withdrawn.
• Premiums are nonrefundable and earn no interest. Interest is earned only on the certificate face amount. The 2026 rate is 13% (federal discount rate on September 1 plus 9 points), fixed for the life of the certificate.
• Subsequent taxes: Routt County states that after August 1, holders get first option on later unpaid taxes, endorsed onto the original certificate at the same rate — not automatically the new year's rate. Confirm with each county.
• Certificate life: Routt County states a certificate of purchase is valid for 15 years from the sale date.

Sources: SB26-144 · Jefferson County · Routt County · Clear Creek County

Unverified: a line-by-line review of the signed SB26-144 text (signed act), statewide certificate expiration rules and how they treat older certificates versus 2026 purchases, statewide endorsement timing, and Clear Creek County's page (it did not load during verification).

Redemption analysis asks what you get back if the owner pays. Property resale analysis (the Playbook's Maximum Bid tools) asks what a property is worth if you end up owning it. Keep them separate.

Hypothetical Colorado example: $1,000 interest-bearing principal plus a $100 nonrefundable premium at 13% simple annual interest, no other costs. Redeemed after about six months: about $65 interest, a $35 net loss, −3.18% for the holding period. Redeemed after about twelve months: about $130 interest, $30 net profit, 2.73% for the holding period. These are illustrations, not expected outcomes.