Assessment is a value.
Tax is a dollar amount.
Your taxable assessed value and applicable tax rates determine your bill. New Jersey expresses billing rates per $100 of assessed value.
Source: NJ Division of Taxation ↗MONMOUTH COUNTY / UNDERSTAND YOUR PROPERTY TAXES
What would your bill look like without annual assessments?
Compare your 2026 bill with an estimated bill using your five-year-old assessment.
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New to property taxes? Three basics explained
THE BASICS / SOURCES INCLUDED
Three things to know.
Assessment is a value.
The levy and the rate
are different things.
A budget plans spending and revenue. The levy is the amount raised through property taxes. Dividing that amount by the taxable assessment base determines the rate.
Source: NJ property tax explanation ↗Homes can move
in different directions.
At a fixed levy, your share depends on your value relative to other taxable property. A rising assessment does not automatically mean a rising bill. Assessment practices also differ among towns.
Source: Monmouth County Tax Board ↗Our calculation illustrates relative shares; it does not measure what annual reassessment alone caused. See assumptions and limits. The county describes both annual-reassessment towns and towns that have opted out.
02 / THE BIGGER PICTURE
How many homes have a lower or higher bill?
See how many homes pay less, more or the same compared with the estimated bill using a five-year-old assessment.
We compared each home’s current 2026 bill with its estimated 2026 bill using its 2021 assessment.
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03 / BEHIND THE NUMBERS
How this estimate works.
- 1
We use your home’s 2021 assessment
We compare it with other homes’ 2021 assessments to estimate your share of today’s taxes.
- 2
Include today’s taxes
The estimate includes tax increases and assumes homes still pay the same share of the total tax bill they do today, with businesses and other properties paying the rest.
- 3
Calculate the estimated bill
We apply your old share to today’s residential taxes. Fire and garbage taxes are calculated separately for the homes in each district.
Why use the 2026 rate?
The rate calculates today’s total residential tax dollars. We then allocate those dollars using your old share. Using old assessments directly would require an equivalent adjusted rate to raise the same amount.
Fire, garbage and other special districts use their own full bases and rates. Searchable or matched homes are never used as the tax base.
It’s an estimate.
Appeals, renovations and other property changes could affect the result.
Assumptions and limitations
This estimates how your 2026 bill differs when today’s assessment share is compared with your five-year-old share. It holds the total residential tax burden fixed, including the share paid by homes versus businesses and other property. It does not simulate every year of a five-year reassessment cycle or prove that ADP caused the dollar difference. Municipalities do not all follow identical assessment practices.
These are estimates, not guaranteed bills. No statistical margin of error has been established.
New construction, renovations, appeals, exemptions, splits and mergers can change the result. An unchanged parcel identifier does not prove an unchanged home. Known conflicts and change indicators are excluded; other changes may still require review.
WHY VALUES CAN CHANGE
Neighborhood change and reassessment
- Development & demandNew homes, apartments and neighborhood demand may influence nearby values. PILOT agreements and tax abatements can encourage development.
- Updated assessmentsReassessment reflects market conditions, along with changes to individual properties.
- A different share of taxesIf a home’s assessment grows faster or slower than the residential total, its share changes.
These are possible influences, not measured causes. This calculator does not assign a dollar effect to PILOT agreements, abatements or nearby development.
Coverage and rounding
Both full rolls contain all 53 municipalities. Dollar comparisons require matched, positive residential records, consistent districts, usable full-roll bases and verified rates for every code. Unknown codes are never treated as zero.
Each complete bill is rounded to cents before subtraction. “Unchanged” means exactly zero cents difference. Counts reconcile; percentages use eligible property counts, not averaged town percentages. Average and median dollar differences may be rounded for display.
Sources and exclusions
2021 state roll · 2026 state roll · County source index · Data audit
Full-year property tax estimates exclude personal credits and relief, added or omitted assessments, adjustments, interest, sewer charges and PILOT payments. These estimates are not a statement of your balance due. Rates checked November 15, 2026.
Recipient allocations describe where current taxes go. The separately labeled budget breakdown explores changes and includes preliminary allocations and unresolved balances.