New York’s layered real estate transfer taxes
Selling or buying property in New York can trigger several overlapping transfer taxes. The state charges $2 per $500 of price (0.4%), paid by the seller. On homes of $1 million or more, the buyer owes the mansion tax — 1% statewide, rising in New York City. And within the five boroughs, the city adds its own Real Property Transfer Tax (RPTT). This calculator stacks all three so you see the seller’s bill, the buyer’s bill, and the combined cost of the transaction.
How it works
The state transfer tax is the simplest layer: price divided by $500, rounded up, times $2. The tool models it as 0.4% of price. The mansion tax applies only at and above $1 million and uses a tiered rate that climbs for very high-value NYC homes. The NYC RPTT, when applicable, uses the residential rate schedule.
state transfer tax = price × 0.4% (seller)
mansion tax = price × tier rate, only if price ≥ $1,000,000 (buyer)
NYC RPTT = price ≤ $500k → 1% ; price > $500k → 1.425% (seller, NYC only)
Seller-side taxes (state + RPTT) and the buyer-side mansion tax are shown separately because they fall on different parties by default.
Notes and example
A $1.2 million home sold in New York City: the state transfer tax is $4,800 and the NYC RPTT at 1.425% is $17,100, both on the seller. The buyer pays the 1% mansion tax of $12,000. Combined, the transaction carries about $33,900 in transfer-related taxes. Outside the city, the same sale skips the RPTT, leaving $4,800 (seller) plus $12,000 mansion tax (buyer).
This is an estimate using standard residential rates. Commercial property, co-ops, exemptions, and high-value NYC mansion-tax tiers have special rules. Confirm with a real estate attorney or title company. All figures stay in your browser.