When reporting gambling wins and losses, the IRS-approved “session method” is critical, especially at the state level. The session method allows the netting of wins and losses within a continuous gambling session. This can result in much lower gross winnings, and therefore, lower taxes owed. Professional and recreational gamblers can use this method.
For example, a gambler may receive a W-2G, Certain Gambling Winnings, from a casino showing $15,000 of winnings from a slot machine. However, they may have only profited $5,000 from that session. The W-2G only reflects the result of a single wager. It does not account for any losses incurred. If gamblers take advantage of the session method, they would only report their net win of $5,000 from the session.
Proper implementation of the session method involves:
- Defining sessions appropriately based on the gambling activity— slot play for a full day or one poker tournament, for example. Note that each individual sports bet is considered a session based on the best interpretation of IRS guidance.
- Tracking buy-in and cash-out amounts for each session.
- Recording sessions accurately as they occur—not weeks or months later.
- Providing supporting documentation of sessions if audited.
Gamblers should understand session method mechanics and properly utilize it to minimize taxes owed.