> Stuff that is exclusively used for your business is deductible, anything for personal use isn't. I think you're working from a different set of assumptions t

> Stuff that is exclusively used for your business is deductible, anything for personal use isn't. I think you're working from a different set of assumptions than GP. They were specifically contending that exclusive expenses could not be deducted, even if the overall net value of transactions is negative (because it's not a business, but just a partial recovery of hobby expenditures.)