You final-tabled a series event in Las Vegas, and Nevada did not take a cut. That feels like a freeroll. It is not. If you live in California, California taxes the win, and it taxes all of it.
California taxes residents on income from everywhere
California taxes the entire taxable income of every resident (R&TC §17041(a)(1)). The Franchise Tax Board says residents are taxed on all income, including income from sources outside California (FTB Pub. 1031). The FTB lists lotteries, raffles, horse races, and casinos among the winnings it taxes (FTB, Gambling).
What changes from state to state is whether another state also taxes the same money, and whether California gives you credit for it.
For the federal rules, see Professional or Recreational Gambler? How the IRS Decides and The 2026 Gambling Loss Limit.
Nevada: nothing to credit
Nevada has no personal income tax, so there is no Nevada tax for California to credit. California taxes the full Nevada win at California rates, as if you had won it in a California card room.
- No state tax comes out at the cage. Nevada has nothing to withhold, so the California tax on a Nevada score is often still sitting in your bankroll. Set it aside before it goes back into play.
- Other no-income-tax states work the same way. California is the only state with a claim.
Winning in a state that does tax nonresidents
Many states tax nonresidents on gambling winnings from inside their borders, and some withhold at the cage. Rules vary widely, including whether a nonresident can deduct losses at all.
California then gives residents a credit for net income tax paid to the other state on the same income (R&TC §18001; FTB 2025 Instructions for Schedule S). Its limits:
- Net income taxes only. A tax counts only if it is imposed on net income (FTB 2025 Instructions for Schedule S). A flat tax on gross winnings may not qualify.
- California’s sourcing rules decide. The income must come from sources within the other state under California’s rules, not that state’s (R&TC §18001(a)(1) and (c)).
- Capped at California’s tax on that income. The credit cannot exceed the share of your California tax that the double-taxed income bears to your total income (R&TC §18001(a)(3)).
- A few states give the credit instead. If the other state gives California residents a credit for California tax, California does not (R&TC §18001(a)(2)). Arizona, Oregon, and Virginia generally work this way for California residents (FTB 2025 Instructions for Schedule S).
- File there first. You claim the credit on Schedule S and attach a copy of the return filed with the other state (same source). The credit follows the tax on that return, not simply what the cage withheld.
Hypothetical example. A California resident has $500,000 of total income, including a $100,000 cash in a state that taxes nonresidents. Assume a California tax of $40,000.
- Share of income taxed by both states: $100,000 ÷ $500,000 = 20 percent
- Credit limit: 20 percent of $40,000 = $8,000
- If the other state’s tax on the cash is $6,000, the credit is $6,000, and California keeps $2,000.
- If the other state’s tax is $10,000, the credit stops at $8,000. The extra $2,000 is a real cost.
- If the same $100,000 came from Nevada, there is no credit, and California keeps the full $8,000.
The figures are simplified. In short, the credit tends to leave you paying roughly the higher of the two states’ tax on that income, not both.
The California Lottery exemption is narrow
California law bars state tax on prizes awarded by the California Lottery (Cal. Gov. Code §8880.68). The FTB applies that to California Lottery games, including SuperLotto, Powerball, and Mega Millions (FTB, Gambling).
That is the whole exemption. Poker, casino, card room, and racing winnings are taxable wherever you win them, and so are other states’ lottery prizes (FTB 2025 Instructions for Schedule CA (540)).
How California treats losses in 2026
The federal 90 percent limit came from the 2025 federal tax law (P.L. 119-21, §70114). California now conforms to the Internal Revenue Code as of January 1, 2025, and the FTB says California generally does not conform to that 2025 law (FTB 2025 Instructions for Schedule CA (540)). The same instructions say California did not adopt the federal rule that pulls a professional’s other business expenses into the wagering loss limit.
As of this writing, we have found no California law adopting the 90 percent rule, but the FTB has not released its 2026 instructions, so treat California’s 2026 treatment as unsettled.
Hypothetical example, assuming California’s current approach holds. A professional has $200,000 of winnings, $180,000 of wagering losses, and $20,000 of travel and other expenses. Federally, the 90 percent rule leaves $20,000 of income. For California, the losses would be allowed in full up to winnings and the expenses would not be capped, so the California result would be zero. The difference is adjusted on Schedule CA.
For recreational players: if you take the federal standard deduction, you can still itemize on your California return when that helps (FTB 2025 Instructions for Schedule CA (540)).
Residency for traveling players
A resident includes anyone in California for other than a temporary or transitory purpose, and anyone domiciled here who is away for a temporary or transitory purpose (R&TC §17014(a)). A resident stays a resident while temporarily away (R&TC §17014(c)), so months on the circuit do not, by themselves, change anything.
- The nine-month presumption. If you spend more than nine months of the year in California, you are presumed a resident, though the presumption can be overcome (R&TC §17016). It does not work in reverse: fewer than nine months does not make you a nonresident.
- Domicile is your true, permanent home. You have only one at a time. Changing it requires abandoning the old one, physically moving to and living in the new place, and intending to stay, shown by your actions (FTB Pub. 1031).
- Closest connections. The FTB weighs time spent, where your spouse and children live, your principal residence, driver’s license, vehicle and voter registration, and banks. Strength of ties matters more than the count (FTB Pub. 1031).
Moving to Nevada is a facts and circumstances question, not a mailing address. After a real move, California still taxes nonresidents on California-source income (R&TC §17041(b) and (i)), so sessions in California card rooms can still raise a California question. If a big score lands near your move date, expect the date to be tested. Keep a calendar of where you sleep. Our multistate tax work covers part-year and nonresident returns.
California estimated tax after a score
California’s installments are not equal. For 2026, they are 30 percent by April 15, 40 percent by June 15, nothing in September, and 30 percent by January 15, 2027 (FTB 2026 Instructions for Form 540-ES).
- Safe harbors. Generally, pay the smaller of 90 percent of 2026 tax or 100 percent of 2025 tax. The prior-year figure rises to 110 percent if 2025 California AGI was over $150,000 ($75,000 if married filing separately) (same source).
- The $1 million rule. If 2026 California AGI is $1 million or more ($500,000 if married filing separately), the prior-year safe harbor is not available (same source). A big score can trigger it.
- Late-year wins. The annualized income method on Form FTB 5805 can match payments to when you actually won (same source).
Run the numbers with our estimated tax calculator, and see You Binked. Don’t Do Anything Stupid for 72 Hours. for the first steps after a big cash.
How TreeStar can help
The TreeStar team can help California players sort out where a year’s winnings are taxed: tax preparation for resident, part-year, and nonresident returns, tax planning with estimates sized to actual results, recordkeeping and bookkeeping that tie each cash to its state, cash flow planning for tax reserves, and IRS representation if a notice arrives. If you are weighing a move, we are glad to review the facts with you first.
This article is general information, not advice for your situation. Rules change; confirm current law before acting.
