How Tax Lien Auctions Work
From property tax delinquency to investor outcome: the lifecycle of a tax lien, with institutional-grade data sources.
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$5.02B
Annual Market Size
2024
95%+
Redemption Rate
NTLA / Colonnade
~20 bps
Institutional Loss Rate
Colonnade 2024
80%
Institutional Share
NTLA
The Process
Property Falls Behind
Owner misses property tax payment. County records delinquency and statutory interest begins accruing.
Day 1 of Delinquency
Notice & Advertising
County sends certified notice. Property advertised per state law. Lincoln Institute research shows notice frequency affects compliance.
30-120 Days Before Sale
Sale List Published
County releases auction list with parcel ID, owner, address, amount due. ArrearIQ normalizes across jurisdictions.
7-30 Days Before Auction
Auction Day
Bid-down interest (liens) or bid-up price (deeds). Fortress used 17 aliases in FL to bid rates to 0.25%.
Annual/Quarterly Events
Key Institutional Players
Click to expand source details
Fortress Investment Group
Hedge Fund / REIT
$301M
FL Securitization
1M+
Liens Since 2006
Finch Investment Group
Specialty Servicer
$622M
3 Securitizations
300K+
Liens
Propel Financial Services
Texas Market Leader
$600M+
TX Loans
~50%
TX Market Share
Investment Outcomes
95-99%
Redemptions
Owner repays lien with statutory interest. Investor receives predictable return without property exposure.
2-5%
Foreclosures
Investor may acquire property. Tyler v. Hennepin (2023) requires surplus equity return to former owner.
The market lifecycle.
How tax lien auctions work. Where ArrearIQ fits in.
Property falls behind
Owner misses property tax payment. County begins delinquency tracking.
Pre-public data stage. No investor action yet.
Notice & advertising
County issues notice to owner. Public advertising period begins.
We check 52 county websites daily. New sale notices appear in your feed within 24 hours of publication.
Sale list published
County publishes official auction list (often as PDF or portal listing).
Raw PDFs and portal data become structured records: address, owner, lien amount, assessed value, LTV ratio, and deal score.
Auction day
Competitive bidding. Liens/deeds sold to highest bidder (or lowest interest rate).
Registration deadlines and auction dates for every jurisdiction in one calendar. Email alerts 7 days before each deadline.
Redemption period
Owner has statutory period to pay back taxes + interest. Varies by jurisdiction.
Track which liens redeemed, which are approaching foreclosure, and your projected return across your portfolio.
Outcome
Either redemption (investor receives principal + interest) or foreclosure (investor may acquire property).
See actual yield vs. projected yield. Compare performance by jurisdiction, property type, and acquisition strategy.
Property falls behind
Notice & advertising
Sale list published
Auction day
Redemption period
Outcome
Data Sources & Documentation
Regulatory & Government
- OCC Bulletin 2004-39: Bank risk management guidance
- Lincoln Institute: Property tax delinquency research
- Tyler v. Hennepin (2023): Supreme Court ruling on surplus equity
Industry Research
- NTLA: National Tax Lien Association
- Colonnade Advisors: Summer 2024 industry report
- Tax Sale Resources: Market size data
Securitization Data
- NYCTL Program: 27 securitizations, zero noteholder losses
- FCI Funding (Finch): S&P/Kroll AAA-rated securitizations
- Propel TLF National: Kroll AAA/A ratings
See the data. Then decide.
52 jurisdictions. Every listing scored and linked to the original county source.
Disclaimer: Tax lien investing involves real risk, including redemption uncertainty, title issues, environmental liability, and regulatory changes. ArrearIQ provides data and tools, not investment recommendations. Past redemption rates are not guarantees of future performance. Consult qualified professionals before investing.