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Over-the-Counter Tax Sales: How to Buy What the Auction Left Behind

Why an OTC market exists at all

Every tax sale ends with unsold inventory. Some parcels attract no bid because the taxes approach the property's value; some because the parcel is landlocked, tiny, or defective; some simply because the room was thin that day. Rather than hold the debt, the government takes the unsold liens or properties itself — 'struck to the county' in Florida's language, 'bid in for the State' in Minnesota's, placed on a repository or struck-off list in others' — and sells them afterward over the counter.

The OTC terms are set by law or county policy rather than by auction: a fixed price (usually the amount owed, sometimes a reduced reoffer minimum), a fixed rate where the product is a lien, and a first-come, first-served queue. There is no bid-down, no premium, and no crowd. What there is, is time — OTC inventory can be researched at leisure, parcel by parcel, which is the exact opposite of auction dynamics and the reason patient investors love it.

Florida: the 18% shelf

Florida's certificate auction is the canonical example. Certificates that draw no bid are struck to the county at the statutory maximum — 18% — and are commonly available over the counter afterward at that full rate. Compare the auction, where competitive certificates bid down in quarter-point steps and prime parcels clear near zero. The OTC shelf trades selection for rate: you earn the maximum on certificates the auction passed over, so the work is finding the parcels the room misjudged rather than the ones it correctly avoided.

LienHub lists county-held Florida certificates for purchase year-round alongside the seasonal auction, per county tax-collector pages — meaning the Florida OTC market never really closes. The research standard is identical to auction research: verify the parcel in the property appraiser's records, confirm the certificate is still available (OTC lists change as certificates sell and owners redeem), and underwrite the property, because an unredeemed 18% certificate on a worthless lot still ends with you applying for a deed to a worthless lot.

Reoffers, bid-off lists and second sales around the country

California builds the second chance into the deed process: counties may reoffer unsold parcels within 90 days, at a reduced minimum price authorized by the board — in some authorizations as low as $1 — so the 'leftover' deed market in California runs at prices that can fall below the taxes owed, with the county's reoffer list as the inventory sheet. The District of Columbia sells the liens nobody took at its annual sale over the counter through MyTax.DC.gov after the sale. Arizona resells unsold, state-assigned liens through Bid4Assets. Indiana routes unsold certificates to a commissioners' certificate sale in the winter or spring after the fall tax sale — with a shorter 120-day redemption period on those county-held certificates, versus one year on regular sale certificates, which changes the timeline math materially.

Minnesota's version is structural: delinquent parcels are bid in for the State at the judgment sale, forfeited after the redemption period if unpaid, then sold as tax-forfeited land — first at an initial price based on estimated market value, then reoffered at a minimum-bid price based on taxes, penalties, interest and costs. Illinois's Cook County runs a separate biennial scavenger sale for parcels delinquent over multiple years. Different labels — OTC, reoffer, repository, struck-off, scavenger — one reality: the government keeps a shelf, and the shelf has a door.

The adverse-selection problem, and how professionals handle it

Say the quiet part plainly: auction leftovers skew bad. The room had the same data you have and passed. What remains is disproportionately landlocked strips, contaminated or demolished property, odd slivers from old subdivisions, and parcels whose taxes exceed any sane value. Buying the shelf blind — '18% guaranteed!' — is how the OTC market eats beginners.

The professional counter is throughput: screen hundreds of OTC parcels against fast filters (value versus amount owed from the assessor's record, property type, access, imagery) and deep-dive the handful that survive. The gems exist — an overlooked buildable lot in a thin county, a commercial parcel struck during a holiday-week sale — and the OTC format gives you the one thing auctions never do: unlimited research time before your money moves. LienToDeed's Pro tier tracks over-the-counter inventory for the same reason: the shelf changes as counties list and sell, and the first researcher wins the good parcels at fixed prices.

Pricing the shelf: what OTC terms actually give you

OTC economics differ from auction economics in one crucial way: the rate and price are fixed, so return differences come entirely from selection. A Florida county-held certificate pays 18% whether the underlying parcel is a buildable lot or a swamp strip — the rate is identical, the collateral is not. That means the entire OTC skill is a valuation filter: what fraction of this shelf is mispriced in my favor, and can I tell before I buy? County assessor data gives a first sort (assessed value versus certificate amount), but the decisive checks are the unglamorous ones — access, zoning, buildability signals, and whether the parcel's existence matches its paperwork.

Compare the other shelves' shapes before choosing where to spend research hours. California reoffers can price below the amount owed (minimums reducible by board authorization), which creates equity-style upside with deed-style title work. Indiana's commissioners' certificates carry the state's penalty structure on a 120-day redemption clock — fast resolution, leftover selection. DC's bid-off liens sell through MyTax.DC.gov at the District's 18% statutory rate framework. Each shelf rewards the same workflow: obtain the list, filter fast, verify survivors against county records, buy the handful that misprice. The platform is not the strategy; the filter is.

A timing note that shapes OTC portfolios: shelves restock on the auction calendar's rhythm. Florida's struck certificates appear right after the May–June sale closes; California reoffers follow within the statutory 90-day window after a sale; Indiana's commissioners' inventory arrives in the winter/spring after the fall sale; DC's bid-off liens post after the annual July sale. Investors who calendar the restocks — rather than checking a static list at random — see the fresh inventory first, including the occasional good parcel the auction room overlooked for timing reasons rather than quality reasons. Fresh shelf, same filter: that is the whole OTC edge, repeated on a schedule.

One caution to carry into every shelf purchase: availability changes without ceremony. A certificate listed on Monday may be sold or redeemed by Friday, and counties process OTC purchases in arrival order — the final verification call or click, confirming the specific instrument is still held and purchasable, belongs immediately before payment, not in last week's research notes.

How to work an OTC list, step by step

Get the current list from the county (tax collector, clerk, or the platform page the county designates — LienHub for Florida county-held certificates, MyTax.DC.gov for DC bid-off liens). Date-stamp it; OTC inventory is perishable. Filter for parcels where the assessor's value comfortably exceeds the amount owed. Research survivors exactly as you would auction targets: property card, recorded sales, imagery, title red flags. Confirm availability and the purchase mechanics with the county — some sales are online, some are a counter and a cashier's check. Buy, record your certificate or deed paperwork, and calendar the endgame from the purchase date, using the redemption rules that apply to that specific instrument (Indiana's 120-day commissioner-certificate window is the cautionary example: OTC paper does not always carry the standard timeline).

Questions

What does 'struck off' or 'struck to the county' mean?
It means no private bidder bought the lien or property at the sale, so the government took it itself. Florida 'strikes' unsold certificates to the county at 18%; Minnesota bids parcels in for the State. Struck-off inventory is what OTC and repository sales sell afterward.

Are OTC tax liens a good deal?
The terms can be excellent — Florida county-held certificates pay the full 18% with no bid-down — but selection is adverse: the auction already passed on these parcels. OTC rewards research volume, not optimism.

Where do I find OTC lists?
From the county or its designated channel: LienHub lists Florida county-held certificates year-round, DC sells bid-off liens via MyTax.DC.gov, California counties publish reoffer lists (reoffer within 90 days is authorized), and Indiana counties announce commissioners' certificate sales after the fall sale.

Do OTC purchases follow the same redemption rules?
Not always. Indiana certificates bought at a commissioners' sale carry a 120-day redemption period instead of the standard one year. Always confirm the timeline for the specific instrument before buying.