Hi all,
I have a full-time job in Barcelona and I have just come across a client who would like to offer me some casual freelance work. It would not amount to more than 100 EUR per month.
However, this client needs me to issue official invoices. Might anyone know if I would need to somehow register as autonomo, or if I can issue invoices with my NIE and that’s it? If so, is there a set amount of tax I would need to deduct from the income from this client?
Many thanks in advance for any help!