The Indianapolis tax lien sale is Marion County’s annual auction of unpaid property tax debt, and in 2026 it runs online from October 13 through October 16, 9:00 a.m. to 4:00 p.m. each day.1City of Indianapolis. Prepare for a Tax Sale When you win a parcel, you don’t get the property. You get a tax sale certificate: a lien that either pays you a statutory return when the owner redeems, or ripens into a deed if they never do.
What You Are Actually Buying
A tax sale certificate is a secured financial claim. It does not let you enter, use, or alter the property during the redemption window. The county issues it once you pay the full purchase price on sale day, and it sits as a lien against the parcel until the owner either pays it off or loses the property through the deed process.
Every parcel carries a minimum bid set by the Marion County Auditor, and no property can sell for less. The minimum equals the delinquent taxes and special assessments, the taxes due and payable in the sale year (whether delinquent or not), all penalties on those delinquencies, and the county’s administrative costs — the greater of $25 or actual postage and publication expenses, plus any other tax-sale-specific costs.2Indiana General Assembly. Indiana Code 6-1.1-24-2 – Notice of Tax Sale; Information Required in Notice; County Recovery of Unpaid Costs; Combined Sale or Redemption
Before the sale, the Auditor publishes the property list with parcel numbers, owners of record, and each minimum bid. Annual reports, status lists, and procedural documents are posted on the city’s tax sale reports page.3City of Indianapolis. Tax Sale Reports Pull this list early. You will want time to check title, look for environmental issues, and drive the properties before you bid.
Who Can Register and Bid
Registration happens through the county’s designated online auction platform. You submit an IRS Form W-9 or equivalent tax identification paperwork so the county can track transactions and report taxable income. Complete this several days before the sale opens; last-minute registration problems have no fix once bidding starts.
Indiana law bars anyone who owes delinquent taxes, unpaid special assessments, penalties, or costs from a prior tax sale, and it also bars buying on behalf of someone who is barred. Every participant signs a sworn statement affirming eligibility under penalty of perjury, and the statement covers outstanding civil penalties from building code or health department violations as well. If an ineligible person buys a property, the county treasurer can forfeit the sale within 45 days and apply any surplus toward the buyer’s own delinquencies.4Indiana General Assembly. Indiana Code 6-1.1-24-5.7 – Prohibition on Bidding or Purchasing by Persons with Delinquent Taxes
How the Bidding Works
The auction uses a bid-up format. Bidding opens at the minimum bid and climbs as buyers compete. The highest bid wins the certificate for that parcel, and any amount paid above the minimum becomes surplus, tracked separately from the tax debt.
Winning bidders pay the full purchase price by the deadline set on sale day. Once payment clears, the county issues the tax sale certificate. Again: this is proof of a lien, not a deed.
The Redemption Period and Your Return
After the sale, the original owner gets time to pay off the debt and keep the property. For most parcels, that redemption period lasts one year from the sale date. Properties sold to a qualified purchasing agency under Indiana’s redevelopment statutes get a 120-day window. Properties on the county auditor’s vacant and abandoned list have no redemption right at all, and the buyer can move toward a deed immediately.5Indiana General Assembly. Indiana Code 6-1.1-25-4 – Period for Redemption; Issuance of Tax Deed
If the owner redeems within six months of the sale, they owe 110% of the original minimum bid, effectively a 10% premium. Between six months and one year, that rises to 115% of the minimum bid.6Indiana General Assembly. Indiana Code 6-1.1-25-2 – Amount Required for Redemption
On top of that base, the owner pays:
- 5% annual interest on any amount you bid above the minimum bid (the surplus portion).
- Any taxes or special assessments you paid on the property after the sale, plus 5% annual interest on those amounts.
- Attorney’s fees for sending required notices and the cost of a title search, if you certified those expenses to the county auditor on the required form at least 30 days after the sale.
- All taxes, assessments, interest, penalties, and fees that accrued on the property after the sale date.
Owners can look up their total redemption amount through the Marion County Treasurer.7City of Indianapolis. Find Property Redemption Amount The math matters for your bidding strategy: the 10% or 15% premium applies only to the minimum bid portion, while surplus earns 5%. Overbidding pulls your effective yield down sharply if the property redeems.
If the Owner Doesn’t Redeem
When the redemption period ends without payment, you do not automatically own the property. You have to follow a strict sequence of steps, and each has a hard deadline.
Sending the Required Notices
Within six months of the sale date, you must send written notice to the owner of record and anyone else with a recorded interest in the property, such as mortgage holders or judgment creditors. Notice goes by certified mail with return receipt requested to the last known address in the county auditor’s records. If ordinary efforts can’t locate an interested party, Indiana law allows notice by publication in a local newspaper once a week for three consecutive weeks.8Indiana General Assembly. Indiana Code 6-1.1-25-4.5 – Entitlement to Tax Deed Under Various Circumstances; Notice or Requirements; Reversion of Certificate of Sale to County
The notice must include the date you intend to petition for a tax deed, a description of the property from the certificate of sale, the original sale date, your name as purchaser, a statement that anyone may redeem the property, and a breakdown of what redemption would cost.8Indiana General Assembly. Indiana Code 6-1.1-25-4.5 – Entitlement to Tax Deed Under Various Circumstances; Notice or Requirements; Reversion of Certificate of Sale to County A title search before you send notices helps you catch every party who has to be contacted.
Filing the Petition
After the redemption period expires with no redemption, you file a verified petition for a tax deed in court. A judge reviews whether every statutory requirement was met: proper notices, correct timing, accurate content. If the court is satisfied, it orders the Marion County Auditor to prepare the deed, which you then record with the County Recorder.
Deadlines That Can Wipe Out Your Investment
These deadlines are conditions for receiving a deed, not suggestions. Miss one and you lose your entire investment with no refund.
If you fail to send the required notices within six months of the sale, or fail to file the petition within the time allowed, your certificate reverts to the county. The county can keep it or resell it, and you get nothing back.8Indiana General Assembly. Indiana Code 6-1.1-25-4.5 – Entitlement to Tax Deed Under Various Circumstances; Notice or Requirements; Reversion of Certificate of Sale to County The petition must be filed within three months after the redemption period ends. Calendar all three dates the day you win the auction. Notice defects can also block your deed: if the court finds notice failed to reach the right people or missed required content, it can deny the petition.
What a Tax Deed Clears and What Survives
A tax deed conveys ownership free and clear of most liens and encumbrances that existed before or after the sale, including mortgages, judgment liens, and mechanics’ liens.5Indiana General Assembly. Indiana Code 6-1.1-25-4 – Period for Redemption; Issuance of Tax Deed That is the appeal of tax lien investing: the owner’s debts don’t follow the title.
Several categories of interests survive the tax deed:
- Liens with priority under federal law, most notably IRS tax liens.
- State or local taxes and special assessments that accrued after the sale.
- Recorded easements, covenants, and deed restrictions.
- Government police powers: zoning, building codes, land use rules, environmental protection requirements.
The survival of easements and covenants is why a title search before bidding matters. A property might be free of mortgage debt but carry access easements or use restrictions that limit what you can do with it.5Indiana General Assembly. Indiana Code 6-1.1-25-4 – Period for Redemption; Issuance of Tax Deed
Federal Tax Liens
If the IRS has a recorded tax lien on the property, the federal government has its own 120-day redemption right after the sale, and it can step in regardless of Indiana’s timeline.9Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens Because a tax deed preserves federally prioritized liens, an unresolved IRS lien can cloud your title even after the deed issues. Check for federal liens before bidding.
Getting Marketable Title After the Deed
A tax deed doesn’t automatically let you sell the property or get title insurance on it. Most title insurance companies won’t insure a tax deed title without a court order confirming ownership, because former owners and lienholders may still have residual claims.
The usual fix is a quiet title action, a lawsuit asking the court to declare you sole owner and extinguish other claims. You file a complaint naming anyone with a possible claim, serve them, and if nobody contests, the court can enter a default judgment. Recorded with the county, that judgment gives you title a title company will insure. Plan for extra legal costs and several months. Skipping this step can make the property hard to resell or finance.
Environmental and Condition Risks
Tax lien purchases are strictly buyer-beware. You cannot inspect the interior before the sale, and the county makes no guarantees about condition, habitability, or contamination. Under federal environmental law, current owners can be strictly liable for contamination on their land even if they did not cause it. Tax sale buyers have had trouble using the “innocent purchaser” defense to escape cleanup liability, because courts have found the tax sale itself creates enough of a legal relationship with the prior owner to block that defense.
Before bidding, check environmental databases for known contamination, review the property’s history for industrial or commercial use, and drive the site. A parcel with a small tax debt can carry six-figure cleanup obligations that transfer with the deed.
Federal Tax Treatment of Your Return
Interest earned when a property owner redeems is taxable ordinary income. The 10% or 15% premium above your purchase price is reportable on your federal return, and so is the 5% annual interest on surplus and on subsequent taxes you paid.
If you acquire the property through a tax deed rather than redemption, your cost basis equals what you paid at the sale plus the deed-process costs you incurred (title search, attorney’s fees, court filing fees, recording fees). Keep every receipt; those costs reduce your taxable gain when you eventually sell.
The county may issue a Form 1099-INT reporting interest paid to you on redemption. Even without a form, the income is reportable. Track each certificate separately, since the six-month versus twelve-month timing shifts your return amount and your taxable income for that year.
Practical Advice for the Marion County Sale
Review the property lists and procedural documents on the city’s tax sale reports page well before October.3City of Indianapolis. Tax Sale Reports Register on the auction platform and complete your W-9 and eligibility affidavit early.
Set a firm budget for each parcel before the auction opens. The bid-up format pushes prices, and every dollar above the minimum earns only 5% annual interest on redemption compared with the 10% or 15% return on the minimum-bid portion. Overbidding shrinks your effective yield fast if the property redeems, so experienced buyers focus on parcels with few competing bidders.
The moment you win, build a timeline for every statutory deadline: six months to send notices, one year for the redemption period to run, three months after that to file the petition. The county does not send reminders, and missed dates forfeit the certificate.