FIRPTA Withholding Calculator
When a non-resident alien sells US real estate, the buyer must withhold 15% of the gross sale price under FIRPTA. This calculator estimates that withholding plus your projected actual US tax on the gain, so you can see whether to file Form 8288-B for a reduced withholding certificate.
⚠️ Important Disclaimer
This content is for informational purposes only and does not constitute legal, tax, or financial advice. Tax laws change frequently — always verify with the CRA and IRS or consult a qualified cross-border tax accountant before making decisions.
How FIRPTA works
The Foreign Investment in Real Property Tax Act of 1980 created a withholding mechanism to ensure foreign sellers pay US tax on gains from US real property. The buyer is the withholding agent — they hold back 15% of the gross sale price and remit it to the IRS using Form 8288 within 20 days of closing.
The withholding is not the tax. It's a deposit. Your actual US tax is calculated on your 1040-NR for the year of sale, applying long-term capital gains rates to the realized gain after depreciation recapture. If FIRPTA withholding exceeds your actual tax, you receive the difference as a refund. If it's less, you owe the difference.
Form 8288-B — withholding certificate
If your projected actual tax is less than 15% of gross sale price (which is common — the gain is usually a fraction of the sale price, not the whole thing), file Form 8288-B before closing to request reduced withholding. The IRS reviews your projected tax calculation and, if approved, issues a certificate authorizing the buyer to withhold less. Processing takes 60-90 days, so file as soon as you have a contract — ideally even before listing.