Why is it worth becoming a sole trader (toiminimi)?

Both running a sole trader business (toiminimi) and light entrepreneurship are appealing for the freedom they offer. You can freely decide how much you want to work, on which days, at what time, and with whom. If you've decided you want to become an entrepreneur, you have a clear business idea, perhaps already have customers lined up, and want to grow your business over time, it's worth becoming an entrepreneur right away. As an entrepreneur, you also get various tax benefits.