A plain-language walkthrough of the full investment process — from finding auctions to collecting your return.
When a property owner fails to pay their property taxes, the county places a tax lien on the property. Rather than wait for payment, many counties sell that lien at public auction to investors. You pay the overdue taxes on the owner's behalf — and in return, the county gives you the right to collect that money back, with interest, when the owner eventually pays.
When a property owner fails to pay taxes and the redemption period expires, the county seizes the property and sells it at public auction. You're not buying a debt — you're buying actual real estate, usually at a significant discount to market value, and taking immediate ownership.
You are not buying the property. You are buying the debt secured by the property. The owner still lives there, still has rights to the property, and has a legally defined window of time — the redemption period — to pay you back. If they don't, you may eventually have the right to foreclose and take the property.
Unlike a lien, there is no redemption period waiting game. In most deed states you receive a deed at the auction and can take possession quickly. The tradeoff: you need more capital, face more risk from property condition, and need to know what you're buying before you bid.
Tax lien and deed auctions are run by county treasurers or tax collectors. Each county sets its own schedule — some hold auctions annually, others multiple times per year. Most counties now hold online auctions through platforms like Grant Street Group, RealAuction, or Bid4Assets, though in-person auctions still exist in many rural counties.
To find upcoming auctions, start with the county treasurer or tax collector website for the county you're targeting. Look for terms like "tax lien sale," "tax certificate sale," or "tax deed sale." Most counties publish a list of available properties weeks before the auction — this is your research window.
Parcel number, property address, assessed value, amount owed, and any prior year liens. Some counties include property type and acreage.
County website, local newspaper legal notices, and the auction platform directly. Some counties require advance registration to even view the list.
This is the most important step and the one most beginners skip. Before bidding on a lien, you need to understand what secures it — the property itself. Even though you're not buying the property, its value determines whether you can ultimately collect your money. A worthless property means a worthless lien.
Due diligence is everything in tax deed investing. You will receive the property as-is, with no warranties, no disclosures, and no recourse. Title issues, environmental problems, structural damage, and squatters all become your problem the moment the gavel falls.
At minimum, every investor should check: the property's location and condition (drive by or view on satellite), the assessed value versus what's owed, whether there are any superior liens that survive the sale, and whether the property type matches your investment goals.
Most counties require advance registration — often 1–2 weeks before the auction. Online auctions typically require account creation on the auction platform, identity verification, and in many cases a deposit or proof of funds before you can participate.
For in-person auctions, you'll receive a bidder number (paddle) on the day. Online auction platforms assign you a bidder ID when you register. Know the deposit requirements — many counties require a refundable deposit of $500–$2,000 just to participate.
Deed auctions often require larger deposits — sometimes 5–10% of your anticipated purchase price. Have certified funds or a wire transfer arranged in advance. If you win and can't close, you forfeit your deposit and may be banned from future auctions.
Tax lien auctions use several different bidding formats depending on the state and county. The three most common are:
The auction starts at the maximum statutory interest rate. Investors compete by bidding the rate down. The winner accepts the lowest rate. Common in Arizona, Florida, and New Jersey.
The lien face value is fixed. Investors bid a premium above the lien amount. The premium earns no interest — only the face value does. Winning high premiums can kill your ROI.
Investors are assigned liens in rotation rather than competing. Less competitive, but you have less control over which properties you get. Used in some Iowa and Maryland counties.
The county randomly assigns liens to registered investors. No bidding at all. Returns are fixed at the statutory rate. Rare but exists in a few jurisdictions.
Tax deed auctions are typically open-outcry or online ascending bid auctions. There is a minimum bid (usually the amount of back taxes owed plus fees), and the property goes to the highest bidder. There is no interest rate involved — your return comes from the difference between what you pay and what the property is worth.
If you win, you'll receive confirmation from the county or auction platform. Payment is typically due within 24–72 hours — by wire transfer, certified check, or through the online platform. Failure to pay forfeits any deposit and may result in being barred from future auctions.
Once payment clears, the county issues a tax lien certificate (also called a tax sale certificate or tax certificate). This document is your proof of investment and your legal claim to interest. Keep it secure — you'll need it to collect your return or initiate foreclosure.
Once payment clears, the county issues a tax deed. Depending on the state, this may be a deed that gives you clear title or a deed that still carries some risk of challenge. Have an attorney review the deed and record it at the county recorder's office as soon as possible.
Most counties automatically record the certificate at the county recorder's office, but verify this. You should receive or be able to download a copy. File it safely — paper or digital — as you'll need it at redemption or foreclosure.
Track your certificate's redemption deadline. This is the date after which the owner can no longer redeem, and you may begin the foreclosure process. Counties will notify you of redemption if it happens, but don't rely on this — check the status yourself as the deadline approaches.
Record your deed at the county recorder's office immediately. This establishes your ownership in the public record and protects you from any subsequent claims. There is a recording fee (typically $20–$60 depending on county).
Once recorded, secure the property. Change locks, post no-trespassing signs if vacant, and address any immediate safety issues. Contact your insurance agent to get a vacant property policy in place — standard homeowner's insurance does not cover vacant properties.
When the property owner pays their back taxes, the county processes the payment and issues you a check or wire for the full redemption amount: your original investment plus interest at the rate you won, for the full holding period.
Interest is typically calculated from the date of your purchase to the date of redemption. Some states use a simple interest formula; others use a compound calculation. Check your state's specific rules.
Some states have a minimum guaranteed return — even if the owner redeems within a few months, you are entitled to at least a minimum penalty (e.g., Arizona's 5% minimum, New Jersey's 2% minimum per quarter). This protects investors from very short redemptions that would otherwise yield almost nothing.
If the redemption period expires without payment, you have the right (but not the obligation) to initiate foreclosure proceedings. This is a legal process that, if successful, results in you taking title to the property.
Foreclosure timelines and costs vary significantly by state. Some states allow administrative foreclosure (faster, cheaper); others require judicial foreclosure (court involvement, 6–18+ months). Attorney fees typically run $1,500–$5,000 or more for contested cases.
Before filing, do a fresh round of due diligence: Is the property worth more than any senior liens? Is it in rentable or sellable condition? Are there IRS liens that survived? Foreclosing on a worthless property costs money and time with no return.
With a tax deed, your exit options depend on the property's condition and your goals. Many investors flip tax deed properties — buying significantly below market, doing light rehab, and reselling. Others hold and rent. The right strategy depends on local market conditions, the property condition, and your capital situation.
If you're selling, consider working with a real estate attorney to ensure the title is insurable before listing. Many buyers and their lenders will require title insurance, which may require a quiet title action if the deed has any defects.
Use our interactive ROI calculator to estimate your annualized return before you bid.