Mount Vernon Tax Lien Sale: Auction, Redemption, and Exemptions

The Mount Vernon tax lien sale is a yearly public auction where the city sells the right to collect unpaid property taxes and related charges to private investors. The investor pays the city what the property owner owes, then collects that debt back from the owner with interest. If the owner doesn’t pay within the redemption period, the investor can foreclose. For a homeowner who has fallen behind, the sale is the moment a tax bill stops being a city matter and becomes a private debt with a deadline attached.

What Debts Put a Property Into the Sale

Under the Mount Vernon City Charter, “tax” in this context covers much more than property tax. It includes water rents, charges the city incurred for sidewalk repairs or snow removal, special assessments for local improvements, and any other charge that lands on a property’s annual tax roll.¹ Any combination of those can be bundled into a single lien.

A property becomes eligible once taxes or assessments have gone unpaid for two full years from the date they were confirmed as due. If other charges on the same property have been delinquent for at least one year, the Comptroller can fold those into the same sale. If the owner pays off the two-year-old debt before the auction, the one-year charges get pulled from the list.¹

Before the sale, the city publishes an advertisement listing every delinquent parcel, the amount owed, and the deadline to pay. That published list is the clearest way to confirm whether your property is at risk. The total owed includes the base debt, any penalties, and interest at 8% per year running up to the sale date.¹

How the Auction Works

Mount Vernon uses a bid-down format, which works in the property owner’s favor. Bidding opens at the maximum interest rate of 10% per year, and investors compete by offering to accept a lower rate. The lien goes to whoever will take the smallest return.¹ Heavy bidder competition can push the rate well below 10%, reducing what the homeowner eventually owes to redeem.

The Comptroller or a Deputy Comptroller runs the auction directly. There is no outside auctioneer and no auctioneer’s fee tacked on. If no one bids on a lien, the Comptroller can purchase it for the city at no cash cost.¹ The Charter sets the latest possible sale date as the last Tuesday of June each year, though the city has scheduled sales at other times as well.²

How to Redeem the Lien as the Owner

You clear the lien by paying the full amount owed plus accrued interest through the City Comptroller’s office. The Comptroller sits in the middle: you pay the city, and the city reimburses the lien holder for the original investment plus earned interest. Interest runs at whatever rate was set at auction, capped at 10%, so paying sooner costs less.¹

Under New York Real Property Tax Law, the default redemption period is two years from the lien date. A tax district can extend that period for residential or farm property, or shorten it to one year for vacant and abandoned properties placed on a vacancy registry before taxes became delinquent.³ Once you pay in full, request a satisfaction of lien document to clear the public record.

What Happens If You Don’t Redeem

If the redemption period expires without payment, the lien holder can start foreclosure. The Mount Vernon City Charter authorizes foreclosure “as provided for in its Charter and the general laws,” so the process follows New York state procedures for enforcing delinquent tax liens.¹ Foreclosure is a court proceeding. You get notice and a chance to respond before any final judgment. If you do nothing, you can lose the property over what may have started as a modest tax debt.

The common mistake is assuming the lien will resolve itself. It won’t. Once the redemption window closes, the leverage shifts to the investor, and the legal cost of fighting a foreclosure action usually dwarfs what it would have cost to redeem early.

Exemptions That Can Keep You Off the List

If you are struggling to keep up with your tax bill, check whether you qualify for an exemption before the debt reaches the two-year mark. New York’s senior citizen exemption under Real Property Tax Law Section 467 can reduce assessed value by up to 50% for homeowners age 65 and older. The income ceiling varies by municipality but can be set as high as $50,000 in combined annual income.⁴ You must own and occupy the property as your primary residence and have held title for at least 12 consecutive months before applying.

Enhanced STAR offers additional school tax relief for seniors. For the 2026 tax year, your 2024 adjusted gross income must be $110,750 or less to qualify. These exemptions won’t erase your bill, but cutting it meaningfully can be the difference between staying current and ending up on the delinquent list. Contact the Mount Vernon assessor’s office well before the tax due date, because exemptions are not automatic.

What Investors Need to Know

Every prospective buyer must register with the City Comptroller’s office before the auction. Registration includes an IRS Form W-9, which the city uses to report the interest income you later earn on any purchased liens.⁵ If you bid through a corporation or LLC, expect to provide documentation of your business structure.

Winning bidders put down 10% of the lien amount at the time of purchase. The remaining 90% is due within 15 days, payable by certified or official bank check. Personal checks are not accepted. If you fail to pay the balance within that window, your deposit is forfeited and the lien gets re-auctioned.¹ Once the Comptroller confirms full payment, you receive a transfer of tax lien, the legal instrument proving your right to collect the debt plus interest at the auction rate.

Tax liens are often marketed as safe, high-return investments. The federal Office of the Comptroller of the Currency classifies tax lien certificates as carrying a “high level of credit risk” because the underlying obligation is already delinquent.⁶ The biggest practical risk is illiquidity: your money is tied up for the full redemption period with no cash flow. If the owner redeems, you get principal plus interest. If they don’t, you may end up with a property that has structural problems, code violations, or environmental issues costing more to fix than it is worth.

Interest you earn on a redeemed lien is taxable federal income. If the city pays you $10 or more in interest in a calendar year, you should receive a Form 1099-INT. The income is reportable whether or not that form arrives, and the W-9 you filed at registration is what ties the payment to your taxpayer identification number.⁵

1
City of Mount Vernon, NY. City of Mount Vernon Code – Article XIII Tax Liens
2
Mount Vernon, NY. Tax Lien Sale Notice and Listing – December 16, 2025
3
New York State Senate. New York Real Property Tax Law 1110 – Redemption
4
New York State Senate. New York Real Property Tax Law 467 – Persons Sixty-Five Years of Age or Over
5
Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification
6
Office of the Comptroller of the Currency. Tax Lien Certificates – Risk Management Expectations