Guide
W-2Gs, casino reports, and the return — how it all ties together
You don't need to be an accountant to follow this. Here's gambling tax reconciliation explained as if you'd never seen a W-2G.
The short version
Step 1
W-2GS & STATEMENTS
Every W-2G, win/loss statement, and 1099 you upload gets read and sorted by book and tax year.
Step 2
CASINO & SPORTSBOOK REPORTS
Each W-2G is checked against that book's own reported activity — does the casino's number match yours?
Step 3
SESSION TOTALS
Everything ties into one reconciled winnings/losses figure per book — no double-counting, nothing missing.
Step 4
TAX RETURN
The 90% rule is applied to the real, reconciled number — the figure your CPA actually files with.
If a W-2G doesn't match what a casino reported — or a book's statement is missing entirely — it never silently disappears into the total. It's flagged as an exception you (or your CPA) resolve before the return is filed.
Why this matters at all
A W-2G is a form a casino or sportsbook sends the player (and the IRS) when a win is big enough. A win/loss statement is that same book's own year-end summary of everything that happened — every bet, every session. On their own, these documents don't check each other. If a W-2G says $8,700 was won on January 18th but the casino's win/loss statement doesn't clearly reflect that win, that gap is exactly what a review looks for.
“Reconciling” just means making sure every number that's supposed to match actually does — and flagging, loudly, the ones that don't.
The six steps, in plain English
Gather every document
Every W-2G issued or mailed, the annual win/loss statement from every casino and sportsbook played at, and any 1099s. Missing even one book skews the whole picture — the IRS already has a copy of every W-2G, whether it's reported or not.
Upload it — it gets sorted automatically
Drop every file in. LedgerWager reads each one and determines which book it's from, what kind of document it is, and what period it covers. Nothing has to be labelled by hand.
Review what it found
Each document appears with the figures read off it. Open it, check it against the actual file, and approve. Nothing counts toward a total until it's been looked at — no silent auto-accepting.
Everything gets checked against everything
Every W-2G is compared to that book's win/loss statement. If a casino's report doesn't cover what a W-2G says, or a book with known activity has no statement on file, it becomes a flagged exception — not a guess, and not a gap that quietly disappears.
The real number surfaces
Once everything reconciles, the current 90% loss-deduction rule is applied to actual verified totals rather than an estimate — so the taxable gambling income figure is known before a preparer starts drafting.
A package, not a shoebox
One download: documents organized by type, the totals, and a report showing exactly how every W-2G matched up. The firm reviews and files; the organizing is already done.
What “CPA-ready” actually means
A delivery package a firm can open and trust, rather than review from scratch, contains:
- Every source document, organized by type — W-2Gs and 1099s separate from win/loss statements, separate from bank records
- A reconciliation report showing each book's W-2G total lined up against its win/loss statement — matched or flagged
- A plain list of anything that still needs attention before filing, not buried in a paragraph of notes
- The final figures, computed under the current 90% rule, ready to drop onto the right form line
This is general information about how gambling-tax document reconciliation works, not tax or legal advice for a specific situation. Consult a licensed CPA before filing.