[dantillberg]

But if the business spends $100 and the rebate is $2, but I personally pocket the rebate instead of giving the money back to the business, wouldn't that $2 become taxable personal income? (and perhaps also theft, depending on my relationship to the business?)

[lotsofpulp]

https://www.irs.gov/pub/irs-drop/a-02-18.pdf

Seems like only cash rewards are taxable, but even then, it doesn't see like the IRS would be interested in pursuing it.

[DataGata]

If you run a small business and have a SB card, spending just $100k can get you more than $1k in rewards a year. $1k is still probably not worth the IRS tracking down, but getting on the IRS being too busy to tackle your tax fraud is still tax fraud.