Planning a budget for your time in Finland is an important part of preparing for the journey ahead.
You should be prepared to cover all your living costs independently. Additionally, if you are a non-EU/EEA student admitted to an English-taught bachelor's or master's programme, you would be required to pay tuition fees.
Even though students are allowed to work within defined limits (30 hours per week) with a student residence permit, you should note that possible earnings from a part-time job during studies would not be sufficient to cover all your living costs, let alone your tuition fees. Moreover, finding part-time work can be challenging! Also it's important to remember that your primary goal in Finland is to focus on your studies.
Universities can offer scholarships or tuition fee waivers both for bachelor's and master's level international students. Funding options also exist for doctoral level.