SCOTUS Feb 25: Pung v. Isabella will reshape how counties calculate surplus equity in tax foreclosures. Learn more →
Every tax sale in the Mid-Atlantic. One feed.
ArrearIQ parses county portals, PDFs, and auction platforms across DC, Maryland, Virginia, Delaware, and Pennsylvania. You get normalized listings, scored and updated daily.
Tyler v. Hennepin changed everything.
Counties face $2–10B in constitutional liability. First platform with built-in compliance scoring →
The math doesn't work by hand.
Tax liens pay 12–18% statutory interest. But individual investors net 3–4% after operational costs. The gap isn't the asset — it's the workflow.
Statutory
12–18%
Statutory interest rates across Mid-Atlantic jurisdictions
Actual
3–4%
What individual investors actually net after missed auctions, bad data, and manual research
Where the time goes:
We read the PDFs so you don't have to.
ArrearIQ pulls from county portals, PDF sale lists, and third-party auction platforms. Every property is normalized, enriched with assessed values and location data, and scored before you log in.
Parsed from the source
Maryland publishes 47-page PDFs. Virginia splits across TACS and Elliott & Associates. DC uses its own portal. We parse all of them into one standardized feed.
Scored on two axes
Each property gets a risk score (lien-to-value ratio, owner history) and a market score (assessed value trend, neighborhood activity). High risk + strong market = opportunity.
Deadlines tracked for you
Registration windows, bid deadlines, and redemption periods vary by jurisdiction. The calendar shows what's coming and what you'd miss without it.
What the data looks like.
Five properties from this week's listings. Scored, enriched, and ready to evaluate.
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
Next auctions in the Mid-Atlantic.
Registration windows are open now for these sales. Miss the deadline, miss the auction.
Deal Score
City of Philadelphia
PA · Tax Lien
April 2026
9% interest · 5,000 typical listings
Prince George's County
MD · Tax Lien
May 2026
12% interest · 800 typical listings
Wicomico County
MD · Tax Lien
May 2026
12% interest · 120 typical listings
Baltimore City
MD · Tax Lien
May 2026
18% interest · 3,500 typical listings
See the data. Then decide.
Schedule a walkthrough with our team.
Schedule a Demo7 pilot jurisdictions · 52 configured · 5 states · Updated daily
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