To buy tax delinquent properties, you find parcels on a county’s published delinquency list, register as a bidder, and compete at a government auction where you either purchase a tax lien (a certificate that earns interest until the owner pays) or a tax deed (the property itself). Winning is the start, not the finish: a redemption period, notice requirements, and often a quiet title lawsuit stand between the auction and clean ownership.
Liens and Deeds Are Not the Same Purchase
Roughly half the states sell tax liens, about 20 sell tax deeds, and the rest use hybrid or redemption-deed systems. What you receive at auction determines how you make money and what rights you hold afterward.
In a tax lien sale, the government sells the debt, not the property. You pay the outstanding taxes and receive a certificate that earns interest while the debt remains unpaid. Statutory maximum rates run from about 8 percent to 36 percent, though competitive bidding often pushes the actual rate well below the cap. If the owner pays, you get your money back plus interest. If they never pay, you can pursue ownership through a separate legal process.
In a tax deed sale, the government sells the property itself, usually after years of delinquency and failed collection attempts. The winning bidder receives a deed and, once any redemption period expires, gains title. Deed sales attract investors who want discounted real estate; lien sales attract investors who want interest income.
Finding the Parcels
Every tax sale begins with an official list from the county treasurer or tax collector. Lists appear on county websites or in local newspapers, typically several weeks before the auction. Each entry shows a parcel identification number, the owner’s name, and the amount owed.
Check the list often as the sale approaches. Owners frequently pay at the last minute and drop off the schedule, so keep a running shortlist and refresh it as the date nears.
Use the parcel number to pull county records for the legal description, current assessed value, and zoning designation. Most assessor offices publish this online at no charge.
Research Before You Bid
The biggest risk is what you fail to learn beforehand. Properties are sold as-is, with no government warranty about condition, location accuracy, or code compliance.1State Controller’s Office. Chapter 7 Tax Sale FAQ
Title and Surviving Liens
A title search reveals whether federal tax liens, mortgages, or judgments sit on the property. Some liens are wiped out by a tax sale; others survive, and surviving liens become your problem. Which ones are extinguished depends on state law and whether all lien holders received proper notice before the sale.
Federal tax liens are the sharpest trap. A tax sale eliminates an IRS lien only if the local government sent written notice to the IRS by registered or certified mail at least 25 days before the sale.2Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens If that notice was not sent, the IRS lien stays attached to the property after you buy. Ask the county tax office whether it gave the required federal notice on any parcel with an IRS lien.
Physical Condition
You usually cannot inspect the interior before bidding. You are limited to the exterior and to public records for code violations, open permits, and structural complaints. Budget for the possibility of major repairs on anything you win.
Environmental Liability
Contaminated property carries cleanup liability under federal environmental law. Courts have held that buying at a tax sale creates a legal relationship with the previous owner sufficient to trigger liability for cleanup costs.3Office of the Law Revision Counsel. 42 USC 9601 – Definitions State and local governments that acquire contaminated property through tax delinquency are excluded from this liability. Private buyers are not. Before bidding on any commercial or industrial parcel, check EPA records and state environmental databases.
Registering and Funding Your Bid
You must register with the county before the auction, often days or weeks in advance. Registration forms ask for your full legal name, contact information, and a government-issued photo ID. Many jurisdictions request a tax identification number so any interest you earn can be reported to the IRS.4Internal Revenue Service. 1099-INT Interest Income Some counties require a signed statement that you are not delinquent on your own property taxes.
If you plan to buy through an LLC or other entity, bring the organizational documents and any paperwork identifying the members or owners. Investors often use an LLC to separate personal assets from the risks tied to the property.
Bring the right kind of money. Most counties require cashier’s check, money order, or wire transfer; personal checks and credit cards are almost never accepted. Many auctions also require a refundable deposit to participate, ranging from around $1,000 to $5,000 or more. Winners see the deposit applied to the purchase. Losing bidders get it back within a few business days to a few weeks. Have full payment ready before auction day, because winners typically must pay within hours of the auction closing. Failure to pay can forfeit your deposit and get you banned from future sales.
How the Auction Runs
Bidding formats vary. In a bid-down auction, the interest rate is what moves: bidding starts at the statutory maximum and drops as investors compete, and the winner is whoever accepts the lowest rate. In a premium-bid auction, investors offer cash above the minimum tax debt, and the highest bid wins. Some jurisdictions combine or alternate formats.
Many counties run auctions through online portals with a countdown timer on each parcel; a last-second bid resets the timer to give others a chance to respond. When time expires, the winner gets an electronic confirmation and follows on-screen prompts to pay.
In-person auctions move fast. The auctioneer calls parcels in order, usually by parcel number or a pre-assigned sale number, and bidders must be clear and vocal. If no one bids, the county typically retains the parcel and may offer it later at a surplus or scavenger sale with a lower minimum.
Winning Is Not Owning: What Happens After the Sale
The Owner’s Redemption Period
Most states give the original owner a redemption period, a window to pay the delinquent taxes, interest, penalties, and your costs to reclaim the property. Redemption periods typically run one to three years, though some states set shorter or longer windows depending on property type.5Office of the Law Revision Counsel. 28 USC 2410 – Actions Affecting Property on Which United States Has Lien If the owner redeems, you get your investment back plus interest at the state’s rate.
During redemption, you generally cannot take possession. The former owner may continue to live on or use the property but cannot deliberately damage or neglect it. Some states treat serious damage as forfeiture of the redemption right.
The IRS’s Separate Redemption Right
When a federal tax lien was attached to the property, the IRS has its own redemption right for 120 days after the sale, or the state-law redemption period, whichever is longer.5Office of the Law Revision Counsel. 28 USC 2410 – Actions Affecting Property on Which United States Has Lien If the IRS redeems, it repays you the sale price. Another reason to screen carefully for federal liens before bidding.
Bankruptcy
If the owner files for bankruptcy before or during the tax sale process, an automatic stay halts most collection and enforcement actions against the debtor’s property, which can delay or complicate the sale. Some government tax actions are exempt: a local government can still assess new property taxes and create statutory liens for taxes that come due after the filing.6Office of the Law Revision Counsel. 11 USC 362 – Automatic Stay If a target parcel involves a bankruptcy, talk to an attorney before you bid.
Turning a Tax Deed Into Real Ownership
Petitioning the Court
Once the redemption period expires without payment, you can move for full title. Many jurisdictions require a petition for a tax deed filed in local court. You must show that the original owner and any other interested parties, such as mortgage holders, received proper notice of the sale and the expiration of the redemption period. A judge reviews the record and, if everything was done correctly, authorizes the deed.
Notice requirements are unforgiving. If a court later finds the former owner did not receive adequate notice, the entire sale can be overturned. Keep detailed records of every notice you send, including certified mail receipts and proof of publication.
Recording the Deed
After the court authorizes the tax deed, record it with the county recorder or clerk. Recording updates public land records to show you as the owner. Fees vary but are typically modest. Once recorded, you have legal authority to take possession, improve the property, or sell it.
Removing Occupants
If the former owner or a tenant is still on the property after you receive the deed, you cannot change the locks. You must file a formal ejectment or eviction action in court. The court issues an order, and a sheriff enforces removal if the occupant still refuses to leave. The process runs weeks to months and involves filing fees and potentially attorney costs. Never try to remove an occupant yourself.
Quiet Title
A tax deed does not always give you clean, insurable title. Title insurers often refuse to insure a tax deed property without further legal steps, because the former owner, a lien holder, or an heir might still challenge the sale.
A quiet title action is a lawsuit asking a court to declare you the rightful owner and extinguish remaining claims. For an uncontested action, expect roughly $1,500 to $5,000 in attorney fees. If someone contests it, costs can climb well past $15,000 and the case can stretch beyond a year. The expense is often necessary before you can resell or borrow against the property.
Federal Income Tax on What You Earn
Interest earned on tax lien certificates is taxable as ordinary income. If the interest exceeds $10 in a year, you should receive a Form 1099-INT, but you owe the tax whether or not the form arrives.4Internal Revenue Service. 1099-INT Interest Income Report all interest income on your return even if the amount is small.
If you take a property through a tax deed and later sell at a profit, the gain is generally subject to capital gains tax. Your cost basis is the amount you paid at the sale plus additional expenses such as recording fees, quiet title costs, and improvements. Holding for more than one year before selling qualifies the gain for long-term capital gains rates. Talk to a tax professional if you buy and sell multiple properties in a single year, because the IRS may treat frequent transactions as business income rather than investment gains.