Get your taxes done using TurboTax

You are engaged in an activity to make a profit. You therefore have a business. Don’t overthink it. You have income from sales which you report on Sch C and you have expenses like the cost of the cards which you also report on Sch C along with any other expenses like postage if applicable.  Your net income will be taxed at your marginal tax rate and you will pay 15.3 percent for self employment tax.