California does not tax California Lottery winnings at the state level, but the federal government does. The IRS withholds 24% up front on any lottery prize over $5,000, and your final federal bill can reach 37% of the prize once it’s added to the rest of your income. The gap between what the Lottery withholds and what you actually owe is where most winners get into trouble on tax on California lottery winnings.
Why California Takes Nothing
California Revenue and Taxation Code Section 17138 exempts California State Lottery prizes from state income tax.1California Legislative Information. California Code RTC 17138 The Franchise Tax Board confirms the exemption applies to SuperLotto Plus, Mega Millions, and Powerball tickets bought in California.2Franchise Tax Board. Gambling – Personal Income Types That spares winners a state rate that otherwise runs from 1% to 13.3%.
The exemption is narrower than many people think. It covers only the official California Lottery. Casino winnings, horse racing payouts, sports betting profits, and lottery prizes bought in other states are all taxable California income.2Franchise Tax Board. Gambling – Personal Income Types A California resident who wins on a Powerball ticket purchased in Nevada owes California tax on the prize because the ticket didn’t come through California’s system.
What the IRS Actually Takes
The IRS treats lottery winnings as ordinary income. On any prize where winnings minus the wager exceed $5,000, the California Lottery withholds 24% for federal tax before paying you.3Internal Revenue Service. Instructions for Forms W-2G and 5754 – Section: Withholding That 24% is a deposit, not the final number. Your real tax depends on the total income for the year and which brackets it lands in.
For tax year 2026, single filers hit the top 37% bracket on taxable income above $640,600. Married couples filing jointly hit it above $768,700.4Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Even a moderate jackpot pushes most winners into that top bracket for the year.
Here’s how the gap plays out. A single filer earning $80,000 in salary wins $1 million. Total income is $1,080,000. After the 2026 standard deduction of $16,100, taxable income is about $1,063,900. The Lottery withheld $240,000 (24% of the million), but the actual federal tax owed on that taxable income runs closer to $330,000, depending on deductions. Roughly $90,000 is still due when the return is filed. Winners who spent freely in the months after collecting rarely have that reserve on hand in April.
Lump Sum vs. Annuity
How you take the prize changes when the tax hits. A lump sum drops the entire cash value into a single tax year, and for a large jackpot almost all of it lands in the 37% bracket. There’s no way to spread the impact.
The annuity option pays over 30 graduated annual installments.5California Lottery. Winner’s Handbook Each installment is taxed only in the year it arrives, and because the annual amounts are smaller, some of each payment may fall into lower brackets. Annuities also carry rate risk in both directions: if Congress lowers rates later, future payments benefit; if rates rise, those payments cost more.
Making Estimated Payments to Avoid Penalties
The 24% withheld at payout rarely covers the full federal bill on a large prize. Winners who don’t close the gap before filing can be charged an underpayment penalty on top of the balance owed. The IRS expects taxpayers with significant income not covered by withholding to make quarterly estimated payments using Form 1040-ES, due April 15, June 15, September 15, and January 15 of the following year.6IRS. 2026 Form 1040-ES – Estimated Tax for Individuals
Two safe harbors protect you from the penalty even if you still owe at filing. You’re safe if your balance due is under $1,000, or if you’ve paid at least 90% of the current year’s tax through withholding and estimated payments combined. You’re also safe if you paid at least 100% of the prior year’s total tax liability, which rises to 110% when your prior-year adjusted gross income exceeded $150,000.7Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty For someone with modest income the year before a big win, meeting the prior-year-tax threshold is often the easier path. For a lump-sum winner staring at a six-figure shortfall, making an estimated payment shortly after the prize clears is the cleanest fix.
Can You Deduct Gambling Losses?
Federal law lets you deduct gambling losses against gambling winnings, but only if you itemize on Schedule A instead of taking the standard deduction.8Internal Revenue Service. Topic No. 419, Gambling Income and Losses The deduction can’t exceed your winnings. Win $50,000 in Lottery prizes and lose $60,000 at poker, and you can deduct only $50,000.
Starting in tax year 2026, the deduction is capped at 90% of qualifying gambling losses under the One, Big, Beautiful Bill Act, down from 100%. A player who won $100,000 and lost $100,000 used to break even on paper. Under the new rule, only $90,000 of losses is deductible, leaving $10,000 in taxable “phantom” income.9Internal Revenue Service. Form W-2G Certain Gambling Winnings – Rev. January 2026 Casual lottery players without significant losses to claim won’t notice. Frequent gamblers will.
The IRS requires an accurate diary of wins and losses backed by tickets, receipts, and statements to substantiate any deduction. Keeping records as you go beats reconstructing them under audit pressure.
Sharing a Winning Ticket
When a group of coworkers or friends splits a ticket, whoever cashes it needs to file IRS Form 5754 identifying every member of the group and each person’s share.10IRS. Form 5754 – Statement by Person(s) Receiving Gambling Winnings The Lottery then issues a separate W-2G to each person, and each member reports only their share. Skip that form, and the IRS treats the full prize as belonging to the person who cashed it, who then owes tax on the entire amount and faces gift tax consequences when distributing shares to the others. Get the paperwork right before anyone claims the prize.
Giving prize money to people outside a formal pool runs into federal gift tax rules. In 2026, you can give up to $19,000 per recipient per year with no reporting.4Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Larger gifts don’t automatically trigger tax, but they do require Form 709 and count against your $15,000,000 lifetime gift and estate tax exemption.11Internal Revenue Service. What’s New – Estate and Gift Tax A married couple can combine exclusions and give $38,000 per recipient without filing. Handing a sibling $500,000 from a jackpot is perfectly legal, but expect to file Form 709 and see your lifetime exemption reduced.
Paperwork You’ll Get and Should Keep
The California Lottery issues IRS Form W-2G to every winner whose prize triggers reporting. The form shows gross winnings and federal tax withheld, and copies go to the winner and the IRS.9Internal Revenue Service. Form W-2G Certain Gambling Winnings – Rev. January 2026 Report the prize on Schedule 1 of Form 1040 under “Other income” and claim credit for the withheld amount on your return.
The IRS recommends keeping tax records at least three years from the date you filed or two years from the date you paid, whichever is later.12Internal Revenue Service. How Long Should I Keep Records? Hold on to the W-2G, any estimated payment confirmations, and the filed return itself. Annuity winners should keep the full set for every payment year, because each installment generates its own W-2G and its own audit window.