See more I think b is a valid option, but I'm personally doing a. Opening a company using an accountant will cost you about BGN or about twice as less if you want to do it yourself , and then if you decide to close it, it's a long process which lasts about 6 months and costs twice as much as the opening. But at the very least, you'd have to know not only how much taxes to pay, but also when to pay them, and how to fill all the paperwork properly. Also, keep in mind that those who are not EU citizens or permanent residents, pay a bit less business-related taxes due to health insurance: they pay other kind of health insurance, unrelated to income at all.
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