Westchester County property tax bills are among the highest in the United States, with effective rates generally running from about 1.2% to over 3% of market value depending on where in the county you live. The total you pay is not one bill but several: the county and your town or city, your school district, and, if applicable, your village and special districts, each sending its own bill on its own schedule. For most homeowners, the school portion alone is more than 60% of the burden.
What You’re Actually Paying For
Four or five separate taxing authorities can have a claim on your property. The county funds parks, public health, and the court system. Your town or city funds municipal operations like roads, police, and waste collection. The school district, run by an elected board with a budget voters approve each spring, is the largest line item in most Westchester bills.
If you live in an incorporated village, you’ll also receive a village tax bill. Special districts for fire protection, water, sewer, or lighting may add further charges. No single unified bill arrives in your mailbox. Each jurisdiction mails its own at its own time of year, which is why the payment calendar matters as much as the dollar amounts.
How Your Bill Gets Calculated
Every calculation starts with the assessed value set by your local assessor. Westchester municipalities assess at different fractions of market value, so New York uses equalization rates to adjust each town’s assessed values to full market value before the county and school district divide their levies across municipalities.1New York State Department of Taxation and Finance. Equalization Rates A town assessing at roughly half of market value gets an equalization rate near 50%.
Each taxing authority then sets a rate that will raise its approved budget. The math: total spending need divided by total taxable assessed value in the jurisdiction, expressed as dollars per $1,000 of assessed value. If a school district needs $50 million and has $2.5 billion in assessed value, its rate is $20 per $1,000. Your bill is your assessed value divided by 1,000, multiplied by that rate.
One point for new buyers: New York law prohibits the assessor from singling out your home for reassessment just because you bought it. An assessor can change your assessment, but only as part of a broader revaluation that applies the same standard to comparable properties.2New York State Department of Taxation and Finance. Opinions of Counsel SBRPS No. 60
When Bills Are Due
Westchester property taxes follow a staggered calendar, and the exact dates vary by jurisdiction, but the pattern is consistent:
- Town and county tax bills are typically mailed in late March or early April, with payment due by April 30 in most towns.3Town of Mount Pleasant, NY. Receiver of Taxes
- School tax bills go out around September 1. Many jurisdictions split the bill into two installments, with the first half due by September 30 and the second by January 31.4Town of Cortlandt, NY. Annual Property Tax Collection Schedule
- Village taxes are typically collected in two installments in June and December.5Irvington, NY – Official Website. Taxing Jurisdictions
If a mortgage escrow pays your taxes, your lender handles timing, but verify the payments cleared. Escrow shortages and lender errors are more common than most homeowners expect.
What Happens if You Pay Late
Interest on late payments runs at 1% per month (or any fraction of a month), with a statutory floor of 12% per year under New York Real Property Tax Law 924-A.6New York State Senate. New York Real Property Tax Law 924-A – Interest Rate on Late Payment of Taxes and Delinquencies The rate can be higher in some years because it tracks a figure the state Tax Commissioner sets each July, but it never drops below 12%. Interest begins accruing immediately after the due date, and most Westchester jurisdictions give no grace period. On a $15,000 school tax bill, one month late costs $150; six months late costs $900.
Sustained non-payment is more serious. Interest keeps compounding, and the municipality can proceed to a judicial foreclosure. Before foreclosure is finalized, you receive a published notice specifying a last day for redemption that must be at least six months after the notice is first published.7New York State Senate. New York Real Property Tax Law 1124 – Public Notice of Foreclosure During that redemption period, you can stop the process by paying all delinquent taxes, interest, penalties, and legal charges in full. If you don’t redeem, a foreclosure judgment can permanently end your ownership. Some jurisdictions offer installment agreements for delinquent taxes, but defaulting on one generally bars you from entering another for several years. Westchester cities and towns handle collection and lien sales directly rather than through the county.8Westchester County Department of Finance. Taxes and Liens – Overview
Exemptions That Lower Your Bill
The quickest way to reduce what you owe is to apply for every exemption you qualify for. Nearly all exemption applications must reach your local assessor by the taxable status date, which is March 1 in most Westchester communities.9New York State Senate. New York Code RPT 302 – Taxable Status Date File on March 2 and you wait a full year for the next cycle. An approved exemption appears on the first bill issued after the following taxable status date, so there is a built-in delay between approval and savings.
STAR (School Tax Relief)
STAR reduces school taxes for owner-occupied primary residences. Basic STAR is available with combined income up to $500,000 for the credit version, or $250,000 for the exemption version. Enhanced STAR is available to homeowners 65 or older with income up to $110,750 for the 2026–2027 school year, applied to all owners and any owner’s spouse at the property.10New York State Department of Taxation and Finance. Types of STAR
If you bought your home after 2015, you cannot get the STAR exemption on your bill. You must register for the STAR credit instead, which the state pays out as a check or direct deposit before school taxes are due. The credit amount can grow by up to 2% a year, while the older exemption amount is permanently frozen.11New York State Department of Taxation and Finance. Register for STAR or Update Your STAR Registration Register through the Homeowner Benefit Portal in your Individual Online Services account on the state Tax Department’s website. You’ll need Social Security numbers for all owners and spouses, your school district name, and your most recent federal or state tax return. Longtime recipients of the old exemption have the option to switch to the credit, which may save more over time.
Senior Citizens Exemption
Homeowners 65 and older may qualify for an exemption that cuts assessed value by up to 50%. Each municipality and school district sets its own income limit, anywhere from $3,000 to $50,000.12New York State Senate. New York Real Property Tax Law 467 – Persons Sixty-Five Years of Age or Over Some jurisdictions use a sliding scale that gives partial relief (5% to 20%) for seniors whose income is above the local maximum but below roughly $58,400.13New York State Department of Taxation and Finance. Senior Citizens Exemption You must own and live in the home as your primary residence, with title in your name for at least 12 consecutive months before application. For couples or sibling co-owners, only one person needs to be 65. The exemption stacks with STAR.
Veterans Exemptions
The alternative veterans exemption, adopted by most Westchester municipalities, has three tiers that can combine:
- Wartime service: 15% reduction in assessed value, capped at a dollar maximum set locally.
- Combat zone service or expeditionary medal: an additional 10% reduction.
- Service-connected disability: a further reduction equal to half the disability rating percentage, with its own dollar cap.14New York State Senate. New York Real Property Tax Law 458-A – Veterans
A veteran who served in a combat zone with a 60% disability rating can receive all three. The dollar caps vary by jurisdiction, so actual savings depend on where you live. Bring your DD-214, and your VA rating letter if claiming the disability tier.
Challenging Your Assessment
If you think your assessed value is too high, you can file a grievance. It costs nothing to try, and a reduction cuts every tax bill tied to that assessment. Grievance Day in Westchester falls on the third Tuesday in June.15Department of Taxation and Finance. Grievance Procedures To file, submit Form RP-524 (Complaint on Real Property Assessment) to your local assessor before Grievance Day.16New York State Department of Taxation and Finance. Property Tax Forms – Assessment Grievance The strongest filings include recent comparable sales below your assessed value, an independent appraisal, or evidence of property defects that reduce market value. The Board of Assessment Review meets on Grievance Day and can decide based on your written submission or an in-person hearing.17Town of Mamaroneck, NY. Key Dates
If the board denies your complaint, you can file a Small Claims Assessment Review (SCAR) petition with the county clerk within 30 days of the final assessment roll being filed.15Department of Taxation and Finance. Grievance Procedures The filing fee is $30.18New York Courts. Small Claims Assessment Review (SCAR) SCAR is available only for owner-occupied one-to-three-unit homes; larger properties must go through formal tax certiorari in Supreme Court.19New York State Unified Court System. Small Claims Assessment Review (SCAR) ONYC Petition Instructions SCAR hearings are informal, and a hearing officer issues a binding decision. You don’t need a lawyer, though some homeowners hire grievance firms on contingency. Those firms typically charge a percentage of the first year’s savings if they win and nothing if they don’t; get the percentage in writing before signing.
The SALT Deduction Cap
Westchester homeowners who itemize can deduct state and local taxes, including property tax, on their federal return, up to a cap. For 2026, the One Big Beautiful Bill Act set the cap at $40,400 for most filers and $20,200 for married filing separately. If your modified adjusted gross income exceeds $505,000 ($252,500 for married filing separately), the cap phases down by 30 cents per dollar above the threshold, with a floor of $10,000 ($5,000 for married filing separately). Both the cap and the threshold rise 1% annually through 2029.20Congress.gov. H.R.1 – 119th Congress: One Big Beautiful Bill Act
Given typical Westchester bills, most itemizers in the county should expect their total SALT, after adding state income tax, to approach or hit the cap. Property tax of $18,000 plus state income tax of $12,000 fits inside $40,400; a bigger combined SALT or a higher income does not. Factor this into any home-purchase budget.