This document was prepared by TaxBet (taxbet.com) using the IRS session method (AM2008-011 / Notice 2015-21). Transaction data sourced directly from gambling platform exports. The 90% loss deduction cap (effective tax year 2026) has been applied where applicable. Client filing-software entry instructions are included in the client report. This workpaper is provided for tax preparation purposes. The CPA of record is responsible for verifying all figures and filing determinations. Not tax advice.

Methodology. Session convention: one session = one calendar day per operator per activity type (IRS Notice 2015-21; Chief Counsel Advice AM2008-011; Shollenberger v. Commissioner, T.C. Memo. 2009-306). Sessions are computed per establishment per day; a per-game-type grain is available where the preparer elects it. Day boundaries currently follow the export's timestamped day; alignment to the wager-location time zone (Notice 2015-21) is implemented and pending preparer validation of the re-derived figures. Computation basis: bet-level cash primitives — payout less stake; operator summary columns are not relied upon. Free-play and promotional wagers are treated as zero amount wagered per Notice 2015-21 (preparer-confirmed); operator summary columns appear to count promotional wagers at face value — the tax framework counts them at zero. Refunded and voided wagers are reconciled to the underlying records, not treated as separate income or loss items (preparer-confirmed). Jackpot pool contributions are not treated as income; actual amounts paid per casino records govern (preparer-confirmed; validated against the export's own running-balance ledger). Loss limitation: gambling losses are deductible on Schedule A up to winnings; the 90% limitation applies to tax years beginning after 12/31/2025. Loss-limitation ordering for tax years 2026+ follows the statutory text (90% of losses, then limited to winnings); an alternative ordering appears in some published guidance — position under professional review. W-2G figures shown are estimated W-2G exposure (from transaction data) unless actual forms are supplied — actual forms, when present, are the authoritative reconciliation target. Sports and multi-day-settlement wagers are grouped by settlement date per platform — a stated methodology position; formal session-method guidance addresses casino play.