Does this calculator prove that I will win an appeal?

No. New Jersey places the burden on the taxpayer to prove the assessment is unreasonable. The calculator is only a transparent screening scenario using inputs you provide.

Is a NJ Property Tax Appeal Worth It?

Enter the evidence

Current taxable assessment

Defensible market value

Certified common-level ratio (%)

General tax rate ($ per $100)

How the screening math works

New Jersey explains that a taxpayer must prove an assessment does not fairly represent the true-market-value or common-level-range standard. This calculator uses the common-level ratio you enter to create a ratio-adjusted assessment scenario, then applies the General Tax Rate to the difference. It does not select comparables, determine admissible evidence, account for every Chapter 123 exception, or promise that a county board or court will adopt the result.

Official guidance: NJ Division of Taxation: Assessment and Appeals. Also see the Watchdog glossary, town reports, and property lookup.

Is a property tax appeal worth screening?

Enter the evidence

How the screening math works