A tax sale property is real estate that a local government auctions off to recover unpaid property taxes. Roughly half the states sell the tax debt itself through a tax lien sale, and the rest sell the property outright through a tax deed sale, with a few using some combination. Which type of sale you’re dealing with changes almost everything: what the buyer receives, whether the former owner can get the property back, and what claims survive the auction.
How a Property Gets to a Tax Sale
It starts with a missed property tax payment. Penalties and interest begin accruing right away, and the balance can grow quickly. The taxing authority sends notices spelling out what’s owed and what happens if the bill stays unpaid. After a waiting period that varies by jurisdiction, the property lands on a public delinquency list and heads toward a forced sale.
That waiting period is not uniform. Some places allow a sale after about a year of delinquency; others wait three years or more. Condemned buildings and other health-and-safety cases can move faster. All the way through, the owner can stop the sale by paying the full balance of taxes, penalties, and interest.
Tax Lien Sale vs. Tax Deed Sale
Confusing these two is the most common mistake new buyers make.
Tax Lien Sale
In a lien sale, the government sells the right to collect the delinquent tax debt, not the property. The buyer receives a tax lien certificate; the original owner keeps possession. In effect, the buyer pays the owner’s tax bill and earns interest while waiting to be paid back. Statutory maximum rates range from 8 percent in lower-rate jurisdictions to 36 percent in the highest, though competitive bidding usually pushes the actual rate well below the cap.
The owner then has a redemption period, running anywhere from six months to four years depending on where the property sits, to pay the lien holder back with interest. If the owner redeems, the certificate is canceled and the buyer gets their money plus interest. If not, the lien holder can start foreclosure to convert the certificate into a deed and take ownership.
Tax Deed Sale
In a deed sale, the government sells the property itself. The winning bidder receives a deed transferring ownership, with no post-sale redemption window, because the pre-sale legal process has already extinguished the former owner’s interest. In most jurisdictions the deed sale wipes out existing mortgages and junior liens, provided the lender received proper notice and did not act. That deed, though, often comes with complications discussed further below.
How the Auction Works
Tax sales are public auctions run by the local tax collector or treasurer, and the bidding mechanics depend on the sale type.
At a tax deed auction, bidders compete on price. The minimum bid usually covers the delinquent taxes, penalties, interest, and administrative costs, sometimes set at a percentage of assessed or fair market value. Highest bid wins.
At a tax lien auction, bidders often compete by offering the lowest interest rate they’ll accept on the lien, with the low bidder winning the certificate. In other places, bidders compete by offering the highest premium above the lien amount instead.
Redemption and Getting Clean Title
For a lien buyer, the redemption period defines the investment. During that window, the owner can pay the delinquent taxes, penalties, and accrued interest and reclaim the property. Many lien buyers actually prefer this outcome because it produces a predictable return without the work of taking ownership of a property they may never have set foot on. If the owner does not redeem, the lien holder generally has to file a foreclosure action in court to convert the certificate into a deed, which adds legal fees and months of waiting.
For a deed buyer, ownership transfers shortly after the auction, but the deed alone is often not enough to sell or finance the property. Title insurers are reluctant to cover a tax deed because the sale process can leave open questions about whether every interested party received proper notice. Most deed buyers end up filing a quiet title action, a court proceeding that formally clears competing claims. These actions take at least three months and can cost several thousand dollars in legal fees, and that expense belongs in the investment math from the start.
Surplus Proceeds If You Lose Property to a Tax Sale
In 2023, the U.S. Supreme Court ruled in Tyler v. Hennepin County that a government violates the Takings Clause of the Fifth Amendment by keeping sale proceeds that exceed the tax debt. The Court held that the government may sell the property to recover what it is owed, but “it could not use the toehold of the tax debt to confiscate more property than was due.”1Supreme Court of the United States. Tyler v. Hennepin County, 598 U.S. 631 (2023)
If your property sold at a tax sale for more than the taxes, penalties, interest, and costs owed, you are constitutionally entitled to the surplus. Before this ruling, many jurisdictions simply kept the difference. Check whether your jurisdiction has a claim process for excess proceeds, and note any deadline, because these funds usually don’t come to you automatically.
Federal Tax Liens and the IRS’s Right of Redemption
A federal tax lien on the former owner does not automatically vanish at a local tax sale. Local property tax liens generally take priority over federal tax liens, even when the federal lien was recorded first; Congress created that exception under 26 U.S.C. § 6323(b)(6).2GovInfo. 26 USC 6323 – Validity and Priority Against Certain Persons Priority is only part of the story, though.
Under 26 U.S.C. § 7425, the entity conducting the sale must give the IRS written notice at least 25 days before the sale when a federal tax lien is on record. Without that notice, the sale does not extinguish the IRS’s lien, and the buyer takes the property subject to the federal debt. Even when notice is given properly, the IRS keeps a right to redeem the property within 120 days of the sale or the period allowed under local law, whichever is longer.3Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens If the IRS redeems, it pays the redemption amount and takes title. Before bidding, search the county records for any recorded federal tax lien on the property.
Environmental Liability
The single scariest risk at a tax sale is buying contaminated land. Under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the current owner of a property where hazardous substances were released can be held liable for the full cost of cleanup, whether or not they caused the contamination.4Office of the Law Revision Counsel. 42 USC 9607 – Liability Federal courts have found that buying at a tax sale creates the kind of ownership that triggers this liability.
CERCLA offers an “innocent landowner” defense, but the buyer has to prove they had no reason to know about contamination and that they conducted “all appropriate inquiries” into the property’s history before purchase.5Office of the Law Revision Counsel. 42 USC 9601 – Definitions Tax sale buyers who skip environmental due diligence cannot claim this defense. Cleanup costs routinely run into six or seven figures. If the property was ever used as a gas station, dry cleaner, auto repair shop, or industrial site, environmental investigation before bidding is not optional.
Due Diligence Before You Bid
Tax sale properties are sold as-is, with no warranties about condition, legal status, or habitability. The government running the auction takes no responsibility for what you’re buying. Pre-sale research is your only protection.
- Run a title search at the county recorder’s office for outstanding liens, including federal tax liens, utility liens, HOA assessments, and other claims. Some of these debts follow the property to the new owner.
- At minimum, drive by. Many tax sale properties have been neglected for years. Some jurisdictions allow interior inspections; others do not.
- Look up the property’s use history and check federal and state environmental databases. Former commercial or industrial sites deserve a Phase I environmental assessment.
- Verify zoning and check for outstanding building code violations. In some places, unpaid code enforcement fines transfer with the property.
- Find out whether anyone is living there. An occupied home may require formal eviction proceedings after the sale, which adds time and legal costs.
Skipping any of these is how tax sale investments turn into losses. The discount at auction is compensation for risk and legwork that a conventional real estate transaction handles through inspections, appraisals, and title insurance. Here, you handle it.
Tax Treatment for Buyers
Interest earned on tax lien certificates is taxed as ordinary income in the year you receive it. When an owner redeems and pays you back with interest, the interest portion is reportable on your federal return. If you eventually foreclose and take the property, your cost basis is generally what you paid for the lien plus later costs like foreclosure expenses and quiet title fees. For tax deed buyers, the winning bid is the initial cost basis, and recording fees and quiet title costs are typically added to that basis as well.