The merchant will probably report gross income for tax purposes and will only reveal details at an invoice level if an audit is triggered. Even then most likel

The merchant will probably report gross income for tax purposes and will only reveal details at an invoice level if an audit is triggered. Even then most likely only a sampling of the transactions will be analyzed. However since the transactions are cash, no identifying information will be shown, so it's anonymous. As the buyer I have the CHOICE to declare it as a deduction or not. So it is also anonymous at my discretion.