There are two ways to buy a house by paying back taxes: negotiate directly with an owner who has fallen behind and fold the delinquent tax bill into a reduced purchase price, or bid at a government tax sale where the property or the tax debt itself is being auctioned. Both can get you a home well below market value, and both carry title and financing risks that catch unprepared buyers off guard. The mechanics differ enough that treating the two routes as interchangeable is where most deals go wrong.
Why Unpaid Taxes Create a Discount
A local property tax lien is unusually powerful. Under federal law, it outranks nearly every other claim against the property, including mortgages recorded years earlier and even federal tax liens filed by the IRS.1Office of the Law Revision Counsel. 26 USC 6323 – Validity and Priority Against Certain Persons Because the local government can eventually seize and sell the property, an owner buried in tax arrears has little leverage, and a conventional buyer with a conventional lender cannot close on a home with a tax lien on it. The discount you get is essentially payment for solving a title problem that scares off ordinary purchasers.
Route One: Buying Directly From the Delinquent Owner
The cleaner path is negotiating a purchase from the current owner and building the tax debt into the deal. The owner wants out from under the obligation, and you want a below-market price. Before making any offer, order a professional title search. It will surface the tax lien itself, any special assessments such as utility district fees, and any other recorded claims. This is also where a Notice of Federal Tax Lien against the owner would appear, which matters because an IRS lien attaches to all of the owner’s property under Internal Revenue Code Section 6321 and follows different rules than the local tax lien.2Office of the Law Revision Counsel. 26 USC 6321 – Lien for Taxes
Getting an Exact Payoff Figure
Contact the local tax assessor’s or collector’s office and request a formal payoff statement. The number is never just the principal tax. It includes accrued interest, penalties for each delinquent year, and administrative fees, which together can add 20 to 40 percent on top of the original bill depending on how long the taxes have gone unpaid. The statement gives you the exact amount required to release the lien on a specific date, and it typically expires within 30 to 60 days because interest keeps accruing.
Structuring the Price and the Payment
Two common arrangements do the same economic work. With a seller credit, the seller reduces the sale price by the amount of the tax debt and the buyer pays the taxing authority directly at closing. With a direct assumption, the buyer takes on the tax debt and the sale price is reduced accordingly. Either way, the total leaving your pocket is the price paid to the seller plus the back taxes paid to the government.
The purchase agreement has to spell out how the tax payoff actually happens. It should reference the specific payoff figure from the collector’s statement, name who is responsible for the payment, and require the closing agent to send funds directly to the taxing authority before any proceeds go to the seller. Vague contract language here is how closings collapse.
An escrow account managed by the title company is the safest mechanism. Funds designated for the arrears sit in escrow until the transaction is ready to close, at which point the escrow agent pays the taxing authority and the lien release is recorded. The title company’s commitment to insure the property should explicitly list the tax lien as an exception that will be removed at closing, so a clean policy issues once the release is recorded.
Financing a Property With a Tax Lien on It
Conventional mortgage lenders will not fund a loan on a property with an outstanding tax lien, because the lien would sit ahead of the new mortgage and defeat the lender’s first-lien position. The workaround is a synchronized closing: the title company obtains the payoff, the lender funds the loan, and the closing agent routes the tax payment to the collector’s office before disbursing anything else. The title insurer issues the lender’s policy once it confirms the release has been or will be recorded.3Internal Revenue Service. Understanding a Federal Tax Lien
If the tax debt is large relative to the property’s value, or the seller lacks the equity to cover the arrears through the sale, traditional financing may not work at all. Hard money and private lenders offer more flexibility with title defects and can close faster, at significantly higher interest rates and shorter loan terms. Some buyers use hard money to clear the lien, then refinance into a conventional mortgage once the title is clean.
Route Two: Buying at a Government Tax Sale
Once an owner’s delinquency reaches a certain threshold, the local government can sell the property, or the debt itself, at public auction. You are buying from the government, usually with no warranties about condition and limited information about what other claims may survive the sale.
Tax Lien Certificate Sales
In roughly half of U.S. states, the government sells the tax debt rather than the property. You pay the delinquent taxes and receive a certificate that entitles you to collect that debt plus statutory interest from the owner. Interest rates vary sharply by state, generally 8 percent to 24 percent annually, with a few states authorizing rates as high as 36 percent.
If the owner redeems within the statutory window, you earn interest but do not get the property. If they fail to redeem, you can eventually petition to foreclose on the certificate and take ownership. That timeline is rarely quick. In many states you wait two to three years before you can even start foreclosure, and the legal process adds more time after that.
Tax Deed Sales
In a tax deed sale, the government has already foreclosed and is selling the property outright. The winning bidder receives a deed, typically a limited warranty deed or a special commissioner’s deed rather than the full warranty deed used in ordinary transactions. That distinction matters when you later try to sell or refinance.
Even with a tax deed, the former owner may still be able to reclaim the property. Most states allow a statutory redemption period after a tax sale, ranging from none at all to as long as four years. During that window, the former owner can pay the purchase price plus penalties and interest to get the property back. Your ownership is provisional until the period expires.
Cash, As-Is, and No Real Inspection
Traditional bank financing is effectively unavailable for tax sale purchases because lenders will not underwrite a mortgage on property with a clouded title or a pending redemption. You need cash or private capital for the bid, plus reserves for clearing title, making repairs, and carrying the property. Auction properties are sold as-is, often after years of vacancy, and inspection access is frequently limited to a drive-by.
The Federal Tax Lien Trap at Tax Sales
This is where tax sale buyers most often get blindsided. Even if you buy the property free of the local tax lien, a federal tax lien filed against the former owner can survive the sale. Whether it does depends on whether the taxing authority gave the IRS proper notice.
Under 26 USC 7425, a nonjudicial tax sale discharges a federal tax lien only if the IRS receives written notice by registered or certified mail at least 25 days before the sale.4Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens If notice was not sent, or was sent late, the sale goes through and the federal lien stays attached to the property. You end up owning the house subject to the IRS’s claim.5Internal Revenue Service. Federal Tax Liens
Even when proper notice is given and the lien is technically discharged, the IRS keeps a separate right to redeem the property. The government has 120 days from the sale date, or the full state-law redemption period if it is longer, to pay the purchase price and take the property for itself.4Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens The IRS exercises this right infrequently, but when it does you get your purchase price back and nothing more. No compensation for repairs, carrying costs, or time.
Before bidding, check the county records for a Notice of Federal Tax Lien against the property or its former owner. If one exists, verify that the taxing authority followed the 25-day notice procedure. If you cannot confirm proper notice, treat the federal lien as surviving the sale and either factor that liability into your bid or walk away.
Clearing Title After a Tax Sale
A tax deed does not automatically give you marketable title. Most title insurance companies will refuse to issue a policy on a tax sale acquisition until a court has cleared the title. The standard mechanism is a quiet title action, a lawsuit asking the court to extinguish all competing claims and declare you the owner.
You identify every party who might have a claim, including the former owner, mortgage holders, lien holders, and anyone else with a recorded interest, then file a complaint in the county where the property sits and serve each one. If nobody contests, the court issues a default judgment. If someone contests, it goes to trial. Uncontested cases typically resolve in three to six months. Contested cases can run well past a year, particularly when former owners or heirs are hard to locate and notice must be published. Legal fees generally run from a few thousand dollars to $15,000 or more for complex situations with multiple claimants. Build this cost into your acquisition budget from the start.
How the IRS Treats the Back Taxes You Pay
Paying a seller’s delinquent property taxes is not deductible. The IRS treats those taxes as the seller’s obligation, so if you agree to pay them you add the amount to your cost basis in the property instead of writing it off.6Internal Revenue Service. Publication 530 – Tax Information for Homeowners The higher basis reduces your taxable gain when you eventually sell, but there is no immediate deduction.
Current-year property taxes work differently. For federal purposes, the IRS splits the property tax year between buyer and seller based on the closing date, regardless of when the tax is actually due under local law. You can deduct only your share, which starts on the date you took ownership. The seller’s share is the seller’s deduction even if you wrote the check.6Internal Revenue Service. Publication 530 – Tax Information for Homeowners
Surplus Proceeds and the Tyler Decision
When a property sells at auction for more than the tax debt that triggered the sale, the excess is called surplus proceeds. Some jurisdictions used to keep it. In 2023, the U.S. Supreme Court ended that practice in Tyler v. Hennepin County, ruling unanimously that a government’s retention of surplus beyond the debt owed is a taking under the Fifth Amendment.7Supreme Court of the United States. Tyler v. Hennepin County, Minnesota
For buyers, this cuts two ways. Auction prices may rise in some markets as jurisdictions restructure sales to comply, because the former owner now has a constitutional right to any excess. And if you are the winning bidder and pay more than the debt amount, the surplus goes to the former owner or their creditors, not back to you. Distribution procedures vary by jurisdiction, but the constitutional floor is now clear: the government cannot keep more than it is owed.