New Jersey legalized sports betting in June 2018, which turned the Garden State into one of the most active markets in the U.S. Sports betting platforms like DraftKings, FanDuel, BetMGM, and Caesars help to generate billions in handle annually. However, many players overlook the complex tax obligations at both the federal and state levels.
A specialized sports betting CPA (Certified Public Accountant) who understands New Jersey’s unique regulatory system is a necessity for minimizing tax liabilities and avoiding costly IRS audits. Sincoff & Sincoff offer affordable financial consulting, tax planning, filing, and bookkeeping services for NJ sports bettors.
How New Jersey Taxes
Sports Betting Winnings
Sports betting and gambling winnings are subject to a dual tax burden in New Jersey, the federal government tax and the NJ state tax.
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- Federal Taxation: The IRS treats gambling winnings as regular income, where the rates range from 10% to 37%, which depends on your total annual earnings.
- New Jersey State Taxation: NJ applies a flat tax rate of 3% on gambling winnings for both residents and nonresidents. This tax applies to the entire payout amount if the prize is over $10,000.
Many bettors mistakenly believe they only owe taxes on winnings reported through a Form W-2G. But the IRS requires you to report all gambling winnings on Schedule 1 (Form 1040) as other income, regardless of whether you received a formal document from the sportsbook. Failure to report the gross amount leads to audit triggers, and a CPA’s assistance prevents this risk.
The W-2G Form: 2025 vs. 2026 Thresholds
The W-2G is the primary document used for sports betting tax reporting. For the 2025 tax year, sportsbooks issued a W-2G when a single bet’s proceeds were at least $600 and the payout was at least 300 times the original wager. But in 2026, the dollar threshold increases to $2,000 to adjust for inflation, though the 300:1 odds requirement remains unchanged.
Every licensed NJ sportsbook provides a year-end activity statement that shows total wagers, total winnings, total losses, and net results, so receiving no W-2G does not mean a bettor faces no liability. A CPA uses these documents to consolidate a NJ bettor’s wins and losses across all platforms, which include Fanatics and bet365, to verify their full gambling income before filing.
The Federal vs. NJ Deduction Asymmetry
The major challenge for NJ bettors is to understand that federal law and New Jersey state law treat gambling losses very differently.
Federal tax law allows you to deduct gambling losses, but only when you itemize deductions on Schedule A, and losses cannot exceed total winnings. New Jersey does not allow deductions for gambling losses at the state level, which means NJ taxes bettors on the full gross winnings amount.
This deduction asymmetry creates a situation where a bettor who wins $30,000 and loses $28,000 in the same year can itemize and show a minimal federal gain but still owes NJ state tax on the full $30,000. A CPA who understands this asymmetry structures the documentation strategy around it.
The OBBBA 90% Cap: A Major 2026 Development
OBBBA (The One Big Beautiful Bill Act), signed on July 4, 2025, introduced the most important change to gambling taxation. The law, effective January 1, 2026, caps the deductibility of gambling-related losses and expenses at 90%, which means bettors cannot deduct their gambling losses dollar-for-dollar against their winnings.
The practical impact creates what tax professionals now call “phantom income.” A bettor who wins $100,000 and loses $100,000 in 2026 will report $100,000 of winnings but can only deduct $90,000 of losses. This leaves $10,000 in taxable income despite having zero actual profit.
The key difference for current filing is that for 2025 returns filed now, sports bettors can still deduct 100% of losses up to their winnings. But for 2026 activity filed in 2027, the 90% cap takes effect under the OBBBA unless the FAIR BET Act or similar legislation successfully rolls it back, though NJ still allows full netting on the state return. High-volume sports bettors in NJ need a CPA who can run forward-looking tax projections.
Recordkeeping: The Foundation of Every Betting Tax Strategy
A CPA cannot do effective tax planning without source documentation. The IRS and NJ Division of Taxation expect bettors to justify every deduction they claim. Every time a bettor gambles, they should record the date, place, type of bets made, and the amount won or lost. Acceptable documentation includes a gambling diary, losing tickets, canceled checks, and year-end platform statements.
Bettors who use multiple sportsbooks face a consolidation problem, as they need statements from all of them. Your tax return needs to account for your total activity across every platform, such as DraftKings, FanDuel, BetMGM, Caesars, Fanatics, and bet365. A CPA builds an efficient consolidated report of all the platforms to avoid missing any information or activity.
Professional Gamblers: A Different Tax Classification
Some high-volume NJ bettors qualify for professional gambler status, and the tax classification changes “Other Income” to “Self-Employment Income,” and profits from gambling count as regular earned income.
The professional bettors file Schedule C, which allows them to name gambling as the business and deduct gambling losses and related costs like data subscriptions, travel, and professional service fees as business expenses. This classification also helps to avoid the 90% OBBBA cap by treating gambling as a trade or business.
Professional classification is not automatic, and the IRS applies a multi-factor test based on profit motive, time invested, and consistency of activity to determine if it constitutes a business. A CPA is essential here to make sure you meet the profit motive and continuity standards that are required to avoid an audit.
Why You Need a CPA for Sports Betting Taxes in NJ
You need a CPA for sports betting taxes in NJ, as generic tax software only handles W-2G entries. It does not handle the federal vs. NJ loss deduction asymmetry, the OBBBA phantom income situation, multi-platform consolidation, or the professional classification question. Each of these creates liability if handled incorrectly.
At Sincoff & Sincoff, we work with NJ bettors across Middlesex County, Burlington County, and Ocean County to build specialized tax strategies that account for both federal and state rules. Contact us for:
- Multi-platform consolidation
- Accurate document record-keeping and “Gambling Diary” substantiation.
- Professional vs. Recreational classification analysis
- Forward-looking 2026 tax projections
If you placed bets last season and are not certain your tax position is correct, contact us for a professional tax consultation, and ensure your sports betting activity does not lead to an IRS notice.
