built a free 'do i owe tax?' checker for sellers
hey all, made a free little tool that might save someone here a headache.
i'm a compsci student who started selling bits on vinted and ebay to keep myself afloat through uni. last year i genuinely could not work out if i owed HMRC anything. everyone i asked said something different. the gov. uk pages are fine but long, and i just wanted a number.
so i built one. you type in what you've earned and what you've spent, and it tells you straight away whether you need to register for self assessment and roughly what to set aside. there's even a tickbox for "i'm just selling my own old stuff" because honestly, half the time the answer is you owe nothing at all. runs in the browser, no sign-up, nothing gets stored.
it's not tax advice, obviously — just the £1,000 trading allowance rules and current bands done properly. if anyone spots something wrong, tell me and i'll fix it. that's half the reason i'm posting.