Yonkers Property Tax Due Dates: Installments and Late Interest

Yonkers property owners get three separate tax bills across the year. City and school taxes come as one combined bill paid in three installments (August 11, October 6, and January 6 for the 2025–2026 fiscal year), Westchester County taxes arrive as a single bill due April 14, 2026, and water charges are billed twice a year on a schedule set by your water district.¹ Those are the Yonkers property tax due dates to put on the calendar. Miss any of them and the city charges 15 percent annual interest, with no grace period on the city bill, calculated from the day the payment was due.

City and School Tax Installments

The City of Yonkers runs on a July 1 through June 30 fiscal year.² Your city and school taxes are bundled into one bill mailed each July, then split into three installments.

For the 2025–2026 fiscal year:¹

First installment: August 11, 2025
Second installment: October 6, 2025
Third installment: January 6, 2026

These dates shift slightly from year to year. The city posts each new schedule on its Real Property Tax page once the tax rate is adopted, so check there every summer. When a due date falls on a weekend or holiday, payment is typically due the next business day.

County Tax Due Date

Westchester County taxes come on their own bill, usually adopted in March and due 30 days later. The 2026 county deadline is April 14.¹ Unlike the city bill, you pay the county in a single lump sum rather than installments.

The county bill also comes with a cushion the city bill doesn’t. Under the Yonkers City Code, county taxes carry a 30-day grace period after becoming a lien. Pay inside that window and no penalty applies. Once the window closes, interest runs at 15 percent per year, calculated from the original lien date through the date you pay.³

Water Bill Due Dates by District

Yonkers is split into six water districts, each billed twice a year on its own schedule:⁴

District 1: January 31 and July 31
District 2: February 28 and August 31
District 3: March 31 and September 30
District 4: April 30 and October 31
District 5: May 31 and November 30
District 6: June 30 and December 31

Your district number shows on your bill. Late water payments also carry 15 percent simple annual interest, calculated from the bill date.⁴

Late Payment Interest

The penalty rules differ depending on which bill is late, and the city bill is the harsher one.

City and School Taxes

There is no grace period. Miss an installment by a single day and interest starts accruing at 15 percent per year, calculated daily from the original due date (the “confirmation date”) through the date you actually pay. The city will not waive this interest for any reason.¹

To put numbers on it: on a $5,000 installment paid 60 days late, interest runs roughly $123. On a $10,000 installment, closer to $247. Because the calculation is daily, every day you wait costs more.

County Taxes

County taxes get the 30-day grace window described above. After it closes, interest accrues at the same 15 percent annual rate, but it reaches back to the original lien date rather than starting from the end of the grace period.³

What Happens if the Bill Stays Unpaid

If property taxes remain unpaid for one year past the due date, the city can sell the tax lien on your property at public auction. The Commissioner of Finance must first publish notice in official newspapers for at least six consecutive weeks and send certified mail to the property owner and any mortgage holders before the sale.⁵

At auction, the lien goes to whichever bidder accepts the lowest interest rate, up to a maximum of 12 percent per year. The winning bidder pays off your tax debt and earns interest on it. You then have three years from the sale date to repay the full lien amount plus that interest. If you don’t, the lien holder can begin foreclosure.⁵ The one-year trigger is shorter than many owners expect.

How to Pay

Yonkers accepts payment three ways:¹

Online through the city’s payment portal, which accepts credit cards and electronic checks. Credit card payments carry a 2.5 percent convenience fee charged by the third-party processor. The portal generates a confirmation number that serves as your receipt.⁶
In person at the Cashier’s Office, City Hall, 40 South Broadway, 1st Floor, Room 108.¹
By mail to the Tax Office, 40 S Broadway, Room 108, Yonkers, NY 10701. Timeliness is judged by the envelope’s postmark, so mail early enough to get a postmark on or before the deadline.⁷

To look up a bill online, you need your property’s Section, Block, and Lot (SBL) number, which appears on prior bills and deeds and can also be found through the city’s Image Mate Online tool.⁸ Confirm the bill type (city/school or county) before you pay so you don’t apply the money to the wrong account.

If Your Lender Pays Through Escrow

If your mortgage servicer handles property taxes through an escrow account, you should still verify each bill was paid. If a bill arrives in your name that the lender was supposed to cover, contact the bank first. The bank is responsible for reaching out to the Assessor’s Office at 914-377-6200 to update the file.⁹ The 15 percent interest doesn’t disappear because your servicer dropped the ball, so the sooner you catch a missed payment, the less it costs.

1
City of Yonkers. Real Property Tax
2
City of Yonkers. Office of Management and Budget
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eCode360. City of Yonkers Code – Assessment and Collection of Taxes
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City of Yonkers. Water Bills
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eCode360. City of Yonkers Code – Sales of Tax Liens for Taxes and Assessments
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City of Yonkers Parking Authority. City of Yonkers Launches New Free Online Property Tax Information
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City of Yonkers. County Tax
8
Image Mate Online. City of Yonkers Real Property Information
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City of Yonkers. Frequently Asked Questions