I don't understand the whole premise of your complaint. In the first place, unless you are a professional gambler, you are required to keep a contemporaneous diary of all your gambling sessions. The total of all your winning sessions goes on line 21 (other income) and the total of all your losing sessions, not to exceed the total of winning sessions, goes on schedule A. The casino's win/loss statement may provide corroborating evidence, but it does not provide the necessary information to compute your tax.

In the second place, pretty much everybody figures their session win/loss net of tips that are given during the session. If you are in the habit of finishing your session, waiting for the pit boss to determine your win/loss, and then tipping a huge amount, you are doing it in the worst possible way for tax purposes.

I'm guessing that you don't keep a diary, or the issue of tipping not being included in your W/L wouldn't come up. But are you claiming that the casino keeps track of all the tips you make and adds it to their record of your W/L? That would seem like a lot of work. Usually the pit boss just writes down how much you buy in for and how much you cash out for.

QL