t doesn’t count as income for them, and it shows up on your receipt, so they do not legally get to write off that $2.

Ahh, I didn’t know this! Thanks for the info. It means the “companies just want you to donate at checkout so they get a tax writeoff” thing that people keep saying is even less true. That viewpoint is so prevalent and I’m not sure why - I guess there’s a lot of people that don’t understand how taxes work.