A seller in Glen Rock lists a well-kept four-bedroom colonial at $965,000. Multiple offers come in in the first two weeks, which is normal for that town this year. The winning bid lands at $1,012,000, which is also normal, since Bergen County single-family homes have been closing at just under 103 percent of list price in early 2026. The seller is thrilled until their attorney calls with a number nobody mentioned during the listing appointment: a state fee, paid entirely by the seller, that did not exist for this house at the price it was marketed for and now applies to the entire sale.
That fee is New Jersey's mansion tax, and it changed in a way that most sellers in Bergen County have not fully absorbed. For twenty-one years it was the buyer's problem. As of July 10, 2025, it is the seller's, and the rate is no longer a flat 1 percent. In a county where bidding wars routinely push list prices past the million-dollar line, that shift matters more here than almost anywhere else in the state.
What actually changed, and when
Governor Phil Murphy signed the revision (Bill S4666/A5804) into law on June 30, 2025, as part of that year's state budget. The new rules took effect for contracts fully executed on or after July 10, 2025. Two things changed at once. First, the obligation to pay moved from the buyer to the seller. Second, the flat 1 percent fee on sales above $1 million became a graduated schedule that climbs as high as 3.5 percent.
| Sale price | Rate | Who pays |
|---|---|---|
| $1,000,000 – $2,000,000 | 1% | Seller |
| $2,000,000 – $2,500,000 | 2% | Seller |
| $2,500,000 – $3,000,000 | 2.5% | Seller |
| $3,000,000 – $3,500,000 | 3% | Seller |
| $3,500,000 and above | 3.5% | Seller |
Every rate in that table applies to the full sale price, not just the portion above the threshold. A $1.2 million sale is taxed at 1 percent of $1.2 million, not 1 percent of the $200,000 above the line. That detail alone catches people off guard, according to Matus Law Group's guidance for New Jersey sellers, since most assume the fee only touches the amount past the cutoff.
There was a brief grace window. Contracts fully executed before July 10, 2025 with deeds recorded on or before November 15, 2025 could claim a refund for anything paid above the old 1 percent rate. That window closed more than nine months ago. Every Bergen County closing happening today runs under the new rules, full stop, and any advice online that still describes the buyer paying a flat 1 percent is describing a law that no longer exists.
The mansion tax also does not replace the standard Realty Transfer Fee, which has applied to New Jersey deed transfers since 1968 and remains a separate, seller-paid cost calculated on its own graduated scale. Sellers above $1 million are now stacking two fees, not swapping one for another. You can review the current fee structure directly through New Jersey Realtors' explainer on the Realty Transfer Fee and Graduated Percent Fee.
Why Bergen County feels this differently
The $1 million threshold has not moved since 2004. Bergen County's home prices have. New Jersey Realtors' local market data for March 2026 put the countywide single-family median at $851,000, with sellers receiving 102.8 percent of list price on average and just 1.7 months of supply on the market, one of the tightest readings in the state. Reporting for the three months ending June 2026 showed the county's single-family median climbing further, to $873,000, up 8.4 percent year over year.
A median is the midpoint. It means roughly half of Bergen's single-family closings are already landing above that figure, and in the county's stronger micro-markets the number is materially higher still. Well-priced listings in Ridgewood, Glen Rock, Tenafly, and River Edge have been drawing multiple offers within two weeks of hitting the market this year, according to reporting on February 2026 conditions. That is good news for net proceeds. It is also the exact mechanism that pushes an ordinary suburban sale across the mansion tax line for the first time.
This is the part worth sitting with: the same tight inventory and bidding-war dynamic that Bergen sellers have been counting on to maximize their sale price is also what quietly moves a listing from tax-free to taxed. A house that would have closed under $1 million in a slower market can close well above it once three or four buyers start competing for it, and the seller who wins that competition now owes the state a bill they never modeled.
The bracket cliff, in real numbers
Because the graduated fee applies to the entire consideration rather than just the amount inside each bracket, crossing a line by even one dollar changes the math for the whole transaction. Selling at $2,000,001 instead of exactly $2,000,000 moves the applicable rate from 1 percent to 2 percent on the full amount, an outcome described by GTA Accounting Group's analysis of the 2026 mansion tax rules as adding roughly $20,000 in tax to gain a single dollar of sale price. The firm calls the range just above each threshold a dead zone, since a seller can net less money at a slightly higher price than they would have at the bracket line itself.
For a typical Bergen move-up sale, the more common version of this cliff is simpler and just as real: the jump from zero tax to 1 percent tax at the $1 million line. Take the Glen Rock example from the top of this piece. A house that would have closed at $965,000 owes nothing. The same house, pushed to $1,012,000 by competing offers, now owes roughly $10,120 to the state, out of proceeds the seller had already mentally allocated elsewhere. Nothing about the house changed. The bidding did.
The stakes get bigger at the top of the market
Bergen's higher tiers feel this differently but no less sharply. Towns like Alpine, Saddle River, Franklin Lakes, Tenafly, and Demarest routinely produce sales well above $2 million, where the graduated rate escalates fast. On a $4 million sale, the tax bill under the new schedule runs about $140,000, compared with roughly $40,000 under the old flat 1 percent system paid by the buyer. That is a $100,000 swing landing entirely on the seller's side of the ledger, and it did not exist a little over a year ago.
There is no carve-out for age or disability under this fee the way there is for a portion of the base Realty Transfer Fee. Every qualifying sale above $1 million pays the graduated rate regardless of who is selling.
Before you list above $900,000 in Bergen County
- Ask your agent for a net proceeds model at your likely list price and at a realistic over-ask outcome, not just the list price alone. If a bidding war is plausible, the tax exposure should be modeled before you sign a listing agreement, not discovered at closing.
- If your home is priced within striking distance of $1 million, $2 million, $2.5 million, $3 million, or $3.5 million, have a conversation with your attorney about how pricing strategy interacts with these thresholds before you set the number.
- Confirm with your closing attorney or title company exactly which rate applies to your sale and whether the base Realty Transfer Fee has been included in your net sheet separately from the graduated fee.
- Do not rely on guidance published before July 2025. If an article or calculator still describes the buyer paying a flat 1 percent, it is describing a rule that has not applied to any Bergen County closing in over a year.
Frequently asked
Does the graduated fee apply to condos and co-ops in towns like Fort Lee or Edgewater? Yes. The fee covers residential Class 2 property, qualifying farm property with a residential structure, certain commercial Class 4A property, and cooperative units, not only single-family houses.
Is the November 2025 grace period still available for a deal I'm negotiating now? No. That transitional refund option required a fully executed contract before July 10, 2025 and a deed recorded by November 15, 2025. Both dates have passed.
Does the new mansion tax replace the Realty Transfer Fee I've always heard about? No. The Realty Transfer Fee has applied to New Jersey deed transfers since 1968 and still applies on top of the graduated fee for sales above $1 million.
A seller who understands this math before they price a listing has real options: how to position the home, how to think about offers that land just past a bracket line, and how to protect what actually reaches their bank account at closing. That is the conversation worth having before the sign goes in the yard, not after.
Jonathan Guzman works with Bergen County sellers on exactly this kind of pricing and net-proceeds strategy well before a listing goes live. Request a Private Strategy Consultation to walk through your specific numbers.
