I will be soon setting up my Enskild Firma. I moved from the Netherlands recently. I am just going to have one client which is my former Dutch Employer. I will be working for them about 40 hours per week. Since they do not have a legal entity here in Sweden, It will be the best to invoice them as an Enskild Firma.
Am I allowed to work for only one client or it is a requirement to have multiple clients?