Tax-deductible expenses are costs that can be subtracted from your total taxable income
https://www.storeboard.com/blogs/affiliate-marketing/the-consequences-of-not-having-a-required-license-or-permit-bond/6227050
Tax-deductible expenses are costs that can be subtracted from your total taxable income, potentially lowering your tax bill. Common examples include charitable donations, certain medical expenses, and business-related costs