To buy tax yields, you purchase tax lien certificates at a county auction: you pay someone else’s delinquent property taxes, receive a certificate from the taxing authority, and collect that money back with statutory interest when the owner redeems. Statutory interest rate ceilings run from 8% to 36% depending on the state, though competitive bidding often pushes the actual yield well below those caps. The process is straightforward once you know the sequence: pick a jurisdiction, research the properties on the delinquent list, register with the tax collector, bid within your limits, and then either wait for redemption or move toward foreclosure.
Know What You’re Actually Buying
Roughly half the states sell tax lien certificates. The rest sell tax deeds, which transfer the property itself to the winning bidder. The difference changes everything about the investment.
A tax lien certificate is a debt instrument. You pay the delinquent taxes, the county issues you a certificate, and you’re entitled to collect that amount plus interest from the owner. You do not own the property. Most liens redeem, meaning the owner eventually pays and you collect your interest. If they don’t redeem within the state’s statutory window, you can pursue foreclosure and take title.
A tax deed skips the debt step. The government sells the property outright to the highest bidder, and the former owner loses title. Some states use a hybrid “redemption deed” where the buyer gets a deed but the former owner retains a limited window to buy back. When people talk about buying “tax yields,” they usually mean tax lien certificates, because the yield is the interest rate on the debt. That’s what the rest of this article covers.
Find the Sale and Vet the Properties
Local tax authorities publish lists of delinquent properties several weeks before each sale, usually in local newspapers and on the county’s website. Each entry shows a parcel identification number, the owner’s name, and the exact dollar amount owed.
Before bidding on any parcel, work through a short list of questions. Is the property worth substantially more than the tax debt? Are there other liens or encumbrances on it? Is the structure habitable or is it a vacant lot with code violations? County assessor sites, GIS mapping tools, and a physical drive-by will answer most of this in an afternoon.
Check for federal tax liens in the county records. If the IRS filed a lien against the owner, that federal lien may survive the tax sale unless the selling authority gave the IRS written notice at least 25 days before the sale. Without proper notice, the federal lien stays attached to the property even after you buy the certificate.1Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens This is one of the simplest and most important checks you can do before you bid.
Register and Fund Your Bidding Account
Every auction requires advance registration with the county treasurer or tax collector. The specifics vary, but the core requirements are consistent.
You’ll provide a taxpayer identification number — either your Social Security number or, if you’re bidding through a business entity, an Employer Identification Number. Federal law requires this so any interest income you earn gets reported to the IRS.2Office of the Law Revision Counsel. 26 USC 6109 – Identifying Numbers The implementing regulations spell out the obligation to furnish the number on request.3eCFR. 26 CFR 301.6109-1 – Identifying Numbers
Beyond the tax ID, expect to submit a government-issued photo ID and, if you’re bidding as a corporation or LLC, your articles of incorporation or operating agreement. Registration forms ask how the certificate title should be held. Get this right the first time; it affects future transfers. Most offices charge a non-refundable registration fee, typically $35 to $250 depending on the jurisdiction.
You also need to prove you can pay. Most counties require a cashier’s check, certified funds, or a pre-arranged wire transfer. Online auction platforms usually require a deposit in advance, from a few hundred dollars to several thousand. If you win and can’t pay, you forfeit your deposit and likely get banned from future sales in that jurisdiction.
Many counties have moved their sales online through services like GovEase. Online registration opens two to four weeks before the sale and requires the same documentation plus a platform account with payment credentials on file. Most platforms offer training webinars before the sale, and the bidding interface and timing rules differ from platform to platform, so treat the training as required rather than optional.
How the Bidding Actually Works
Tax lien auctions use one of two bidding formats, and the format determines what you’re competing on.
Bid-Down Interest Rate
The auctioneer starts at the maximum statutory rate (again, anywhere from 8% to 36% depending on the state) and bidders compete by offering to accept a lower rate. The certificate goes to whoever will take the smallest return. In competitive markets, institutional investors routinely bid rates down into the single digits. This format rewards discipline: know your minimum acceptable return before bidding starts and hold to it.
Premium Bidding
In premium-bid jurisdictions, the interest rate is fixed by state law. Investors compete by offering a cash premium on top of the delinquent tax amount. Here’s the trap: you earn no interest on the premium, and in most jurisdictions you don’t get the premium back at redemption. If the lien redeems quickly, the interest earned on the base tax amount may not cover the premium you paid, and you lose money. Calculate your break-even point before you bid.
Once You Win
A winning bid is legally binding and recorded in the official sale log. You’ll receive a preliminary receipt for each lot. Most jurisdictions give you 24 to 48 hours to settle the full balance, sometimes only until the next business day. Miss the deadline and you lose your deposit and may face a ban from future auctions.
After You Win: The Certificate and the Waiting Period
After payment clears, the tax collector issues your certificate, either as a physical document or an electronic record. Record it with the county clerk or recorder to establish your priority lien in the public record. Recording protects your interest against later buyers or creditors who might otherwise claim they had no notice of your lien.
The redemption period is the window during which the owner can pay off the debt and clear your lien. It ranges from as little as three months to as long as three years, depending on the state. During that time, you wait. When the owner redeems, they pay the delinquent taxes plus statutory interest, and that interest is your yield. Most liens redeem, which is generally the outcome you want: a predictable interest payment without the complications of taking a property.
Pay the Subsequent Years’ Taxes
New investors routinely overlook this. If you don’t pay the following years’ property taxes on parcels where you hold a lien, another investor can buy a new lien on the same property at the next sale. Depending on the state, that new lien may share priority with yours or complicate your path to foreclosure. Budget for at least one or two additional tax payments beyond the original certificate. The amounts you pay in subsequent taxes typically earn the same statutory interest rate and are recoverable when the owner redeems.
If the Owner Files Bankruptcy
If the property owner files for bankruptcy during the redemption period, the automatic stay under federal law immediately halts most collection and enforcement actions, including your ability to foreclose on the lien. One narrow exception: creation or perfection of a new statutory lien for property taxes that come due after the bankruptcy petition is filed is not stayed.4Office of the Law Revision Counsel. 11 USC 362 – Automatic Stay For your existing lien, the stay can freeze your position for months or years while the case proceeds. You can petition the court for relief from the stay, particularly if the debtor has no equity in the property, but that takes counsel and patience.
When the Owner Doesn’t Redeem
If the redemption period expires and the owner still hasn’t paid, you have the right to pursue the property. The process is not automatic and varies by state. In judicial-foreclosure states you file a lawsuit to foreclose the owner’s right to redeem, serve notice on the owner and any other interested parties like mortgage holders, and ask the court to transfer title. Most states also require you to send a final written notice giving those parties one last chance to redeem before you file. Timelines commonly run several months.
Even after you get a foreclosure judgment or tax deed, the title may not be clean enough to sell or finance conventionally. Many investors file a quiet title action, a separate lawsuit asking a court to declare your ownership free of competing claims. Quiet title actions add cost and time, but they’re often necessary to obtain title insurance, which any future buyer or lender will require. Legal fees for an uncontested quiet title action typically run a few thousand dollars; contested cases cost substantially more.
Risks That Ruin the Math
Tax lien investing gets marketed as low-risk, high-return. The returns can be solid. The risks are real, and they concentrate in the exact situations where a property doesn’t redeem and you end up pursuing ownership.
Property Value and Condition
The biggest risk is acquiring a property worth less than what you’ve put in. Properties that don’t redeem are often in that state for a reason: the owner has abandoned it, the structure is damaged beyond economical repair, or the land itself has limited value. Code violations and demolition orders can turn a “free property” into an expensive liability. Verify the assessed value and inspect the property before you bid.
Environmental Contamination
This is the risk that can turn a modest investment into a catastrophic loss. Under the federal Superfund law, current owners of contaminated property can be held liable for the full cost of environmental cleanup even if they had nothing to do with causing it.5Office of the Law Revision Counsel. 42 USC 9607 – Liability The liability is joint and several, so you could be on the hook for the entire cleanup. If you foreclose on a former gas station or industrial site, you step into the owner’s shoes for environmental purposes. For any parcel with contamination history, a Phase I Environmental Site Assessment before foreclosure is the minimum standard for establishing a defense against cleanup liability.
Federal Tax Lien Priority
Property tax liens generally hold super-priority status, taking precedence over mortgages and most other liens in many circumstances.6Internal Revenue Service. 5.17.2 Federal Tax Liens The picture gets more complicated with federal tax liens. If the IRS filed its lien more than 30 days before the tax sale and didn’t receive proper written notice of the sale, the federal lien survives and stays attached to the property after you buy the certificate.1Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens Check for federal liens before every bid.
How the IRS Treats Your Returns
Interest earned on tax lien certificates is ordinary income, reported on your federal return in the year you receive it. When the owner redeems and pays you interest, the county or paying authority reports that income to the IRS on Form 1099-INT for any amount of $10 or more.7Internal Revenue Service. Instructions for Forms 1099-INT and 1099-OID Report it on Schedule B of your Form 1040, the same way you’d report bank interest.
Premiums complicate things. Since most jurisdictions don’t refund the premium and you earn no interest on it, a premium that exceeds your total interest is a net loss. How that loss is treated depends on whether the IRS views your activity as investment or a trade or business. If you’re bidding substantial premiums, talk to a tax professional before auction day, not after.
If you foreclose and take the property, your tax basis is generally the total amount you paid: the original certificate, any subsequent taxes, premiums, and foreclosure costs. When you later sell, you’ll recognize a capital gain or loss against that basis. The calculations get complex if you held the lien across multiple tax years while paying subsequent taxes and accruing interest.
A Sensible First Auction
The best way to learn is to attend an auction, or watch one online, before you bid on anything. Most counties allow observers, and a full session teaches you more about bidding dynamics than any course. Start with small liens on properties you’ve personally inspected. Keep your first purchases in your home area, where you can drive by the property and check county records without relying entirely on online tools. Be skeptical of high-interest-rate certificates that no one else bid on; there’s usually a reason.
Talk to the county tax office staff. They process these sales every year and can tell you things that don’t appear on the published list, like which parcels have been through multiple sale cycles without redeeming. They won’t give investment advice, but they will answer procedural questions that save you from expensive mistakes. The investors who do well in this space aren’t chasing the highest yields. They understand the process cold and only bid when the numbers make sense.