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New Jersey has the highest property tax bills in America and a clean mechanical test.
We check individual addresses here. No cap, and the Chapter 123 ratio gives a straightforward arithmetic test of whether your assessment is out of line. The state publishes its own appeal data: 15,717 appeals in 2025 with $2.06 billion of reductions granted.
So New Jersey gives you a ground that runs on published assessed values rather than on sale prices. You're not showing what your house would sell for. You're showing that homes genuinely like yours are assessed lower than yours is, using numbers the county already publishes.
Now that matters more than it sounds, because it means a state keeping sale prices private doesn't stop you. Illinois, Texas, New York, New Jersey, Pennsylvania, New Hampshire, Kansas, Massachusetts and DC all have some version of it, and honestly it's usually the stronger argument even where sale prices are public.
April 1 in most towns. January 15 in Burlington, Gloucester and Monmouth, which is two and a half months earlier than the date most guides quote. We have flagged this one to re-verify, so check it against your own notice or your county's site before you rely on it.
Miss it and you generally wait a year, so honestly the date matters more than the paperwork does.
And wherever you are, the single most useful thing you can actually do today is go find your assessment notice and read the date printed on it. That's what starts your clock, it's usually a much shorter window than people expect, and there's no getting it back once it's gone.
We've built a page for every one of New Jersey's 564 towns, each with its own 2027 ratio and the exact line your home has to get under, and our free check works everywhere in the state.
First, look up your own record. Your assessment's on your tax bill and on your town assessor's records. Most New Jersey towns don't assess at full value, so the number on its own doesn't really tell you much. Your town's official ratio, which the state publishes every October, is what turns it into the value the assessor's really claiming.
Next, know where to file. You file a petition with your county board of taxation by April 1, or by January 15 in Burlington, Gloucester and Monmouth counties. It's got to arrive by that date, a postmark doesn't count, and copies have to go to your town's assessor and clerk too. Filing costs $5 to $150, depending on your assessment.
Then bring the evidence that wins here. In most towns it's honestly arithmetic. If your home would sell for less than your assessment divided by your town's upper limit, the board's required to lower it. But it works the other way too, and if your home's worth more than your assessment divided by the lower limit, the board has to raise it.
Also, check your exemptions. It's worth checking you're getting the state's ANCHOR property tax relief, and if you're 65 or older, look at the state's Senior Freeze too. Your town also takes $250 off for qualifying seniors, disabled homeowners and veterans, and you'll apply for that with your town's assessor.
Every municipality in New Jersey, all 564 of them, from one statewide record. The state decides these on arithmetic rather than opinion, so we can tell you the exact dollar figure your home has to come in under before a county board is required to cut your assessment. We also tell you when filing would RAISE it, which happens in New Jersey and nowhere else we cover.
So type your address into our free check and we'll read the county's own records, work out whether the evidence actually supports an appeal, and tell you straight. Most people who use it get told not to bother, which is the point.
Check your New Jersey home, free
We've screened all fifty states and DC on the same two questions. Does winning a lower market value actually lower your bill, or is there a cap sitting in between? And can you even put the evidence together from public records?
This comes from our own fifty-state screen, where we checked each state's cap, whether sale prices are public, whether there's an argument based on assessed values, and how many appeals actually get filed. Where we've quoted an appeal count, it's from the state or county that published it. If you spot an error, please write to hello@propertytaxbuddy.com and we'll correct it and say what changed.