Hey all. I've got a question about income tax - I'm a full time student so work part time, but any time I'm not studying or working I run a small computer stop, repairing/refurbishing then reselling old PCs and selling hardware. However this year I'm getting more orders and this calculator ( https://www.income-tax.co.uk/ ) says I will earn more than the personal allowance amount. So my question is: will money I get from the shop count as income? I can't find anything else or anyone else in the same situation as me so really don't know what to do here. Thanks for your help everyone