Why Only 24% Was Withheld From Your Lottery Prize
The lottery withholds 24% federally, but the top federal bracket is 37%. That 13-point gap is a bill that comes due in April, and it surprises almost every winner.
Updated
Withholding is a deposit, not a settlement
Federal law requires lottery operators to withhold 24% on winnings above $5,000. That figure comes from the withholding rules in the tax code, and it is fixed regardless of the prize size. The same 24% applies to a $6,000 prize and a $600 million one.
The tax you actually owe is calculated separately, on your return, using the ordinary income brackets. For a jackpot, essentially all of it sits in the top bracket of 37%.
The difference between those two numbers is not forgiven. It is simply due later.
What the gap costs
On a $200 million cash payout, the lottery withholds $48 million and sends you $152 million, less state tax. Your actual federal liability is closer to $74 million. The additional $26 million is due when you file.
Winners who do not understand this spend against the balance they see in their account. The money is already committed; it just has not left yet. Every serious account of a lottery winner going broke includes some version of this mistake.
The practical response is to move the shortfall into a separate account on day one and treat it as money that is not yours. Your accountant will also likely need to make quarterly estimated payments to avoid underpayment penalties.
State withholding has the same problem
States that tax lottery winnings withhold at their own rate, and that rate frequently differs from what you ultimately owe. Several states withhold a flat percentage that is lower than their top marginal bracket, producing a second, smaller version of the same shortfall.
If you bought the ticket in a different state from where you live, it gets more complicated: the state where the ticket was sold withholds first, and your home state may then tax the same income, with a credit for what you already paid. Two states, two filings, one prize.
What to do about it
Engage a CPA before you claim, not after. The window between winning and claiming is the only time certain planning options remain open.
Ask specifically about quarterly estimated payments, the treatment of any gifts you plan to make, and whether a charitable vehicle makes sense in the year of the win. The deduction is worth far more in a year when your marginal rate is 37%.