How to Read a New York City Property-Tax Bill

A New York City property-tax bill contains several values that sound interchangeable but are not. Reading them in the right order helps an owner spot missing exemptions, understand an increase, and decide whether an assessment challenge deserves attention.

Reviewed August 4, 2026. Tax rates and program rules change annually. Use the current Department of Finance record for the property.

The calculation in four layers

1. Market value is the Department of Finance estimate of what the property is worth.
2. Assessed value is a percentage of market value determined by tax class. The assessment ratio is 6% for Class 1 and 45% for Classes 2, 3, and 4, subject to statutory caps and transitional rules.
3. Taxable value is the assessed value after eligible exemptions reduce it.
4. The city applies the annual class tax rate, then eligible abatements reduce the resulting tax.

That distinction matters: an exemption reduces the value being taxed; an abatement reduces the tax after it has been calculated.

Know the tax class before comparing bills

Most one-to-three-family homes are Class 1. Co-ops, condos, and rental apartment buildings are generally Class 2. Commercial property is usually Class 4. Two homes with the same market value can have very different bills because their class, assessed-value history, exemptions, and abatements differ.

Class 1 assessed-value increases are generally capped at 6% in one year and 20% over five years. Small Class 2 properties have separate caps. Larger Class 2 and commercial properties may show a transitional assessed value that phases changes in over time. This is why multiplying today's estimated market value by a headline ratio may not reproduce the exact bill.

Read the Notice of Property Value before the bill

The annual Notice of Property Value (NOPV) explains market value, assessed value, tax class, and exemptions before the final tax bill. Compare it with the prior year and ask:

• Did the market value jump even though comparable sales do not support it?
• Is the tax class correct?
• Are expected exemptions still listed?
• Does the owner name and mailing address match current records?
• Is a co-op/condo abatement reflected through the managing agent?

Assessment challenges have firm annual deadlines. Waiting for a later quarterly bill can mean missing the window.

Separate the owner's bill from the lender escrow

Many owners pay taxes through mortgage escrow. The lender's monthly escrow collection is an estimate that can include an anticipated cushion; it is not itself the city tax bill. After an exemption, abatement, or assessment change, compare the official Department of Finance balance with the lender's next escrow analysis.

A practical annual routine

Download the NOPV, the property-tax bill, and the Department of Finance account history once a year. Keep proof of exemptions and abatements. For a purchase, ask the attorney how taxes are prorated at closing and whether the seller's exemptions will continue after ownership changes. If a number looks wrong, contact the responsible agency before the filing deadline rather than relying on the listing's tax figure.

Official sources

• NYC Department of Finance — Calculating your property taxes: https://www.nyc.gov/site/finance/property/calculating-your-property-taxes.page
• Determining assessed value: https://www.nyc.gov/site/finance/property/property-determining-your-assessed-value.page
• Property reports and bills: https://www.nyc.gov/site/finance/taxes/property-reports.page

This article is general information, not tax or legal advice. Confirm the current record and deadlines for the specific property.