What a headline prize becomes after an effective tax rate — with sourced country tax notes and take-home.
Lottery winnings are ordinary taxable income: the IRS requires 24% federal withholding on large prizes, and the top marginal federal rate of 37% typically applies to jackpots when the return is filed. Most states add their own income tax (roughly 0-10.9%), while a handful such as Florida and Texas levy none. Non-resident aliens generally face 30% federal withholding on US gambling winnings.
Take-home: 630,000 (63% of the headline figure)
Estimated tax at this effective rate: 370,000 (marginal/effective rate you set — not a full federal+state schedule).
The country note is sourced general information, not tax advice — set the effective rate for your own situation. Full guide: lottery tax by country.