I am employed by the Department of Education (admin) and I get an additional amount from the School Governing Body for extra work done after hours and weekends. I pay 25% PAYE on this extra income.
However, I'm also doing debtors for a company on an online system as an independent contractor (20 hours per month) for which they do not deduct PAYE. I work at home and with no supervision. I have not registered this as any sort of business.
How much tax do I need to pay and how on earth do I declare and pay this tax?