Mega Millions taxes work like this: the lottery commission withholds 24% of any prize above $5,000 for federal tax, but a jackpot winner actually owes 37% to the IRS, plus state tax that can run from zero to nearly 15% depending on where you live. The advertised number and the money that reaches your account are rarely within 50% of each other.
What the IRS Takes From a Jackpot
The IRS treats lottery winnings as ordinary income, taxed the same as wages.1Internal Revenue Service. Topic No. 419, Gambling Income and Losses Federal law requires withholding on any prize above $5,000, and for U.S. citizens and residents that rate is 24%.2Office of the Law Revision Counsel. 26 USC 3402 – Income Tax Collected at Source You never see that money. It comes out before the check is issued.
The catch is that 24% is nowhere near enough. A jackpot pushes almost every dollar of the prize into the top federal bracket. For 2026, that 37% rate applies to income above $640,600 for single filers and $768,700 for married couples filing jointly.3Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 The 13-point spread between what was withheld and what you owe is a bill that comes due the following April.
Put concrete numbers on a $200 million lump sum. The commission withholds $48 million. Your actual federal liability lands closer to $74 million. That leaves roughly $26 million you personally owe the IRS. Winners who spend freely before that bill arrives face penalties and interest on top of the balance.
Lump Sum vs. Annuity
Every Mega Millions winner chooses between a single cash payment and an annuity paid over three decades. The tax consequences differ in ways that matter.
The Cash Option
The lump sum is not the number on the billboard. It represents the actual cash in the prize pool before annuity investments would grow it, and it typically runs 45% to 55% of the advertised jackpot. A $500 million headline might offer around $250 million in cash. The whole amount hits your income in one year, so essentially all of it lands in the 37% bracket. The upside is certainty: you know today’s rates, you pay them once, and the rest is yours to invest.
The Annuity
The annuity pays 30 installments over 29 years, starting with one payment immediately and growing 5% annually to keep pace with inflation. On a $500 million jackpot, the first check would be roughly $7.5 million. Each payment still lands in the top bracket on its own, so the annuity doesn’t dodge bracket-level tax in any single year. What it does is deliver the full advertised prize rather than the discounted cash value.
The legislative risk is real. If Congress raises the top rate during the payout window, later checks get taxed at whatever the rate becomes, with no way to opt out. Winners who chose annuities before the 2017 tax changes saw the top rate drop from 39.6% to 37%; future winners could see the opposite. The annuity also locks up wealth in a structure you can’t redirect if circumstances change.
How State Tax Changes the Math
Where you live adds a second layer that varies by more than 14 percentage points. Florida and Texas impose no state income tax at all, so residents pay only federal. California is unusual: it has high state income tax generally but specifically exempts lottery prizes, a carve-out that saves California winners millions.
At the other end, a New York City resident faces roughly 14.8% combined state and city tax on winnings (10.9% state plus 3.876% city). Maryland withholds 9.5% from resident winners. Stack those on top of the 37% federal rate and a New York City winner loses more than half the prize to taxes before spending a dollar. Two people winning the same jackpot can walk away with totals differing by tens of millions based purely on address.
Buying a ticket in a different state from where you live creates a cross-border wrinkle. You generally owe tax in both the ticket-purchase state and your home state. Most states offer a credit for tax paid to the other state, so you aren’t fully double-taxed, but if your home state’s rate is higher you pay the difference at home on top of what was already withheld.
Estimated Tax Payments After You Win
The 24% withholding is a deposit, not a settlement. The IRS expects the rest during the tax year, not as a surprise the following April. Anyone expecting to owe $1,000 or more beyond withholding must make quarterly estimated payments.4Internal Revenue Service. Publication 505 (2026), Tax Withholding and Estimated Tax
This trips up new winners. If the jackpot lands in July, the next quarterly deadline is coming fast. For 2026 those dates are April 15, June 15, September 15, and January 15, 2027. Missing them triggers underpayment penalties that compound at the IRS quarterly interest rate, which stood at 7% for early 2026.5Internal Revenue Service. Quarterly Interest Rates
A safe harbor offers protection. Pay at least 110% of your prior year’s total tax liability (the threshold for anyone with adjusted gross income above $150,000) and you avoid the underpayment penalty regardless of what you actually owe.4Internal Revenue Service. Publication 505 (2026), Tax Withholding and Estimated Tax For most winners, last year’s tax bill was modest, so 110% of it is easy to cover. The safe harbor prevents the penalty, not the tax itself. The balance still comes due at filing.
Splitting the Prize With a Pool
Office pools and friend groups that pool money on tickets face a specific documentation requirement. When one person claims the prize for the group, the IRS assumes that person won the entire amount unless paperwork proves otherwise. IRS Form 5754 is the fix. The claimant uses it to list the name, address, and Social Security number of each person entitled to a share.6Internal Revenue Service. About Form 5754, Statement by Person(s) Receiving Gambling Winnings
Once processed, the lottery commission issues a separate Form W-2G to each pool member showing their individual share. Each person then reports only their portion.7Internal Revenue Service. Form 5754 – Statement by Person(s) Receiving Gambling Winnings Skip the form and the entire jackpot lands on the claimant’s W-2G, making that one person responsible for tax on the whole prize. Unwinding that afterward is an audit problem a one-page form would have prevented.
A written pool agreement signed before the drawing strengthens the group’s position. It should spell out contributions, division of winnings, and who purchases and claims the tickets. Keep ticket purchase records and contribution receipts alongside it.
Giving Money to Family
Sharing a windfall with family runs into gift and estate tax rules. For 2026, the federal lifetime estate and gift tax exemption is $15 million per person.8Internal Revenue Service. What’s New – Estate and Gift Tax Transfers above that threshold, whether made during life or at death, face a 40% federal estate or gift tax.
Smaller gifts stay off the return entirely. The annual gift tax exclusion for 2026 is $19,000 per recipient. Married couples who elect gift-splitting can give $38,000 per recipient without filing a gift tax return. Payments made directly to a school for tuition or to a medical provider for someone’s care don’t count toward either limit, as long as you pay the institution rather than the person.
Annuity winners face an extra planning problem. If the winner dies before receiving all 30 payments, the remaining stream becomes part of the taxable estate. The present value of those future payments can push a large estate well above the exemption, triggering estate tax on money the heirs haven’t received yet. Financial advisors often cite this as one reason to prefer the lump sum for very large jackpots.
If the Winner Is Not a U.S. Resident
Nonresident aliens who win a Mega Millions prize are withheld at a flat 30% rather than 24%.2Office of the Law Revision Counsel. 26 USC 3402 – Income Tax Collected at Source Some U.S. tax treaties reduce or eliminate that rate, but lottery winnings are specifically excluded from many treaty provisions. Anyone in this situation should consult a cross-border tax specialist before claiming the prize, because U.S. withholding and the home country’s tax treatment can interact in unexpected ways.