Real Estate Transfer Tax Calculator
State and local transfer tax from sale price.
About this calculator
Most states and many cities levy a documentary stamp or transfer tax whenever real property changes hands, and this calculator follows the common per-$500-increment structure many jurisdictions actually use to bill it: the taxable amount (sale price minus any statutory exemption) is divided by 500 and rounded up to the next whole increment, since these taxes are typically charged per full or partial $500 unit rather than as a smooth percentage. State, county, and city rates are each applied separately per increment and summed, which lets you model jurisdictions that stack multiple layers of transfer tax on the same sale. On top of the base transfer tax, high-value sales in states like New York and New Jersey face an additional mansion tax — a surcharge applied only to the portion of the sale price above a specified threshold, not the entire price, so crossing the threshold by a small amount doesn't trigger a large tax jump on the whole transaction.
The calculator reports the total tax, the effective rate as a percentage of sale price, a per-$1,000 figure for easy jurisdiction comparison, and the seller's net proceeds after tax. One frequent point of confusion: whether the buyer or seller is responsible for paying transfer tax is set by local convention and sometimes negotiated in the contract, and it varies significantly by state — this calculator computes the tax amount but doesn't assign liability, so confirm who pays in your market before using these figures in a closing estimate.
Legal Disclaimer
This calculator provides general estimates only and does not constitute legal advice. Laws, regulations, and court procedures vary significantly by jurisdiction. Consult a licensed attorney in your area for advice specific to your situation.
How to Use This Calculator
- Enter Sale Price — the full agreed purchase price before any adjustments.
- Input State Rate, County Rate, and City Rate per $500 of sale price from your jurisdiction's schedule.
- Set Mansion Tax Threshold and Mansion Surcharge % if your state imposes a luxury surcharge (common in NY, NJ).
- Enter Exemption Amount if you qualify for a first-time buyer or other statutory exemption.
- Review Total Transfer Tax and Effective Rate to include in seller or buyer closing cost estimates.
- Check whether the buyer or seller pays transfer tax in your state — conventions vary by market.
How the result changes with Sale Price ($)
| Sale Price ($) | Total Transfer Tax |
|---|---|
| 200,000 | $500.00 |
| 300,000 | $750.00 |
| 600,000 | $1,500.00 |
| 1,000,000 | $2,500.00 |
What each input means
- Sale Price ($)
- Total agreed-upon sale price of the property.
- State Rate (per $500)
- State documentary stamp or transfer tax per $500 of sale price.
- County Rate (per $500)
- County transfer tax per $500 of sale price.
- City Rate (per $500)
- City transfer tax per $500 (0 if none).
- Mansion Tax Threshold ($)
- Sale price above which the mansion-tax surcharge applies.
- Mansion Surcharge (%)
- Surcharge percentage on the amount above the mansion threshold.
- Exemption Amount ($)
- First-time buyer or other statutory exemption amount.
What each result means
- Total Transfer Tax
- Combined state, county, city, and mansion taxes.
- Effective Tax Rate (%)
- Total tax as a percentage of the sale price.
- State Transfer Tax
- State-level documentary stamp or transfer tax.
- County Transfer Tax
- County-level transfer tax.
- City Transfer Tax
- City-level transfer tax.
- Mansion Tax Surcharge
- Additional tax on the amount above the mansion threshold.
- Taxable Amount
- Sale price minus any exemptions.
- Tax per $1,000 of Price
- Transfer tax cost per $1,000 of sale price.
- Seller Net After Tax
- Sale price minus total transfer taxes.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersSale Price ($) = 400000, State Rate (per $500) = 0.7, County Rate (per $500) = 0.55, City Rate (per $500) = 0 = 7 input(s) provided
- Calculate Total Transfer TaxTotal Transfer Tax = r(totalTransferTax)1000 = $1,000
- Calculate Effective Tax RateEffective Tax Rate = r(effectiveRate)0.25 = 0.25%
- Calculate State Transfer TaxState Transfer Tax = r(stateTax)560 = $560
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why is the tax calculated in $500 increments instead of as a smooth percentage of sale price?
Many jurisdictions actually bill documentary stamp/transfer tax per full or partial $500 (or $1,000) unit of the taxable amount rather than as a continuous rate, so this calculator divides the taxable amount by 500 and rounds up to the next whole increment before multiplying by each rate. That rounding-up means even a taxable amount just $1 over a $500 boundary is billed for the full next increment, so very small price changes near a boundary can nudge the tax slightly more than a pure percentage calculation would suggest.
Does the mansion tax surcharge apply to the entire sale price once I cross the threshold?
No — it applies only to the portion of the sale price above the mansion threshold, not the whole transaction. If your threshold is $1,000,000 and the sale price is $1,200,000, the surcharge percentage is applied only to the $200,000 above that line, so crossing the threshold by a small margin doesn't trigger a large jump in mansion tax on the full sale amount.
Who actually pays the transfer tax — buyer or seller?
This calculator computes the total tax amount and the seller's net proceeds after tax, but it doesn't assign who's legally responsible for paying it — that's set by local custom and sometimes negotiated directly in the purchase contract, and the convention varies significantly from state to state. Confirm which party pays in your specific market before using these figures in a real closing estimate.
What does the Exemption Amount input actually do?
It's subtracted from the sale price before the $500-increment calculation runs, reducing the taxable amount that state, county, and city rates are applied to. This models statutory exemptions some jurisdictions offer, such as a first-time homebuyer exemption, so if you don't qualify for any exemption, leave this input at 0 and the full sale price is taxed.
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