NYC Mansion Tax in 2026 — What Buyers and Sellers Need to Know Now
Apr 11, 2026 Brooklyn Buyers,brooklyn sellers,brownstone owners,co-op buyers,condo buyers,First-Time Buyers,first-time homebuyers NYC,NYC Buyers,NYC sellers,small multifamily sellers
If you’re buying or selling property in Brooklyn or anywhere in NYC, you’re part of something bigger than just a transaction. You’re navigating a housing market shaped not only by supply and demand, but by policy decisions that directly impact affordability and access.
One of the most significant — and often underestimated — of those is the mansion tax.
Despite the name, this isn’t just about luxury properties. Under current law, the NYS mansion tax kicks in at $1 million, which means a large share of everyday transactions in Brooklyn are already affected. But as of March 2026, both the NYS Senate and Assembly have proposed a dramatically restructured NYC mansion tax that would lower the entry threshold, increase rates across the board, and shift who’s primarily responsible for paying it.
Here’s what you need to know about the current law, what’s being proposed, and how to plan for either outcome.
What’s on the Table: The Proposed NYC Mansion Tax
Both the Senate Bill (Part TT) and the Assembly Bill (Part QQ) propose a new NYC transfer tax on residential real estate, effective June 1, 2026. This is not part of the Governor’s Executive Bill — it’s coming from the legislature, and the final budget is still being negotiated.
If enacted, this proposed tax would replace the current NYC Real Property Transfer Tax rates for qualifying residential property. It would apply in addition to the existing NYS Real Estate Transfer Tax, the NYS Additional Real Estate Transfer Tax, and the NYS Supplemental Real Estate Transfer Tax.
Here’s what makes this proposal different from the current system:
The threshold drops to $500,000
Under current law, the NYS mansion tax applies at $1 million. The proposed NYC mansion tax would start at just $500,000 — which in Brooklyn captures a much wider pool of transactions, including many first-time purchases, co-ops, and smaller condos. A property that was previously below the mansion tax radar would now be subject to it.
The seller becomes primarily liable
This is the single biggest structural change. Under the existing NYS mansion tax, the buyer is the primary obligor. Under the proposed NYC mansion tax, the seller would be primarily responsible for paying the tax. Both buyer and seller would still face joint and several liability — meaning either party can be held responsible for the full amount — but the default obligation shifts to the seller’s side of the closing table.
For sellers, that’s a direct hit to net proceeds. For buyers, it could mean less out-of-pocket at closing — but it will almost certainly affect how sellers price their properties.
The rate tiers get steeper and more granular
The proposed rates are progressive and increase significantly at higher price points:
For context: a $1.5 million Brooklyn brownstone sale under the current system incurs NYC transfer tax at 1.425%. Under the proposed structure, the rate stays at 1.425% — but the seller, not the buyer, is primarily on the hook. And below $500K, the rate actually drops to 1%, which is lower than the current transfer tax rate.
What This Covers
The proposed tax applies broadly across residential property types:
Direct interests in one-, two-, and three-family houses and individual condo units. Leasehold interests in houses or individual dwelling units in multifamily buildings. Economic interests in houses, co-op apartments, condo units, and individual dwelling units in multifamily buildings.
In practical terms, this covers the vast majority of residential transactions in Brooklyn — brownstones, co-ops, condos, and small multifamily buildings.
What Hasn’t Changed (Yet): The Current Mansion Tax
Until and unless the proposed tax is enacted, the existing rules still apply. Here’s the current landscape:
The NYS mansion tax starts at $1 million and is paid by the buyer. It’s tiered, meaning rates increase as the purchase price rises. Additionally, the current NYC Real Property Transfer Tax applies at either 1.425% or 2.625%, depending on the property type and consideration amount.
These existing taxes already create friction points in the market — buyers adjust offer strategies around thresholds, and sellers price with awareness of how total closing costs affect buyer behavior. The proposed changes would amplify those dynamics significantly.
How This Changes Strategy for Buyers and Sellers
If you’re buying
The proposed shift to seller-primary liability could reduce your direct closing costs — but don’t assume sellers will absorb the hit silently. Expect listing prices to adjust upward to offset the new tax burden. You should continue to understand your full closing cost picture early, including the NYS mansion tax (which remains buyer-paid), NYC transfer taxes, attorney fees, and any mortgage-related costs. Planning around thresholds remains critical: if you’re negotiating near $500K, $1M, or $5M, small changes in price can trigger meaningfully different tax obligations.
If you’re selling
This is where the proposed changes hit hardest. If enacted, you’d become the primary obligor on the NYC mansion tax — a cost that currently falls to the buyer. That means your net proceeds calculation changes, and your pricing strategy needs to account for it. Sellers near threshold boundaries should think carefully about whether a small price reduction — below $500K or below $5M, for example — creates a more favorable tax position for the transaction overall. And if you’re planning to sell in the second half of 2026, it’s worth understanding how the June 1 effective date could affect your timeline.
What We’re WatchingWe’re Watching
This proposal is part of the broader NYS budget negotiation, which is still ongoing. The Governor’s Executive Bill does not include the NYC mansion tax provision — it’s being pushed by the legislature. Final budget deals in New York often involve significant changes from the initial proposals, so the rates, thresholds, and liability structure could all shift before anything is signed into law.
We’re tracking this closely and will update this post as the negotiations develop.
Why This Matters Beyond the Numbers
Most people buying or selling in NYC aren’t thinking in terms of “luxury.” They’re thinking about stability, long-term investment, and finding the right place to live in a highly competitive environment.
When costs like the mansion tax come into play — especially when thresholds drop and the tax burden shifts between parties — they don’t just affect spreadsheets. They affect access. They shape who can afford to buy, who can afford to sell, and what kind of neighborhoods we end up with.
The more clarity we have around these systems, the better decisions we can make — and the more we can reduce friction in an already complex market.
Questions about how the current or proposed mansion tax impacts your buying or selling strategy?
We work with clients across Brooklyn and NYC to navigate these exact dynamics — and we’re always happy to talk through what this looks like in real terms. Reach out anytime.