Can I take other work while on a Finnish startup entrepreneur permit?

The startup entrepreneur permit is granted on the basis that startup entrepreneurship is your main activity, so building and running the company must remain your primary focus.

That said, the permit allows you to do additional work alongside the startup, which can also help you meet the income requirement.

If you are applying for an extended permit, verify your work rights during processing, as your situation and the basis of your permit can affect what work is allowed.