Do Finland passport holders need a visa to visit RS?

Finnish ordinary passport holders do NOT need a visa for Serbia. They may enter, transit and stay visa-free for up to 90 days within any 6-month period, counted from the date of first entry, for tourism and short visits. Serbia grants visa-free entry to citizens of all EU member states, including Finland. A Finnish ordinary passport holder may visit Serbia for tourism for up to 90 days within a 180-day (6-month) period without any visa, eVisa, or advance authorization. Serbia is NOT part of the Schengen Area, so the Schengen 90/180 rule and ETIAS do not apply to entering Serbia; Serbia runs its own independent 90-days-in-6-months visa-free regime confirmed by the Serbian Ministry of Foreign Affairs. EU citizens may even travel on a national ID card instead of a passport under bilateral arrangements, though a passport is the safest document. The single most important practical obligation is registration of stay: every foreign visitor must be registered with the local police within 24 hours of arrival. Hotels and licensed accommodation do this automatically at check-in and issue a "White Card" (Bela karta); guests in private accommodation or Airbnb must register themselves at the nearest police station. At the border travelers should be ready to show proof of sufficient funds (about EUR 50 per day), onward/return travel and accommodation, and travel health insurance is strongly recommended (cover of at least EUR 20,000). The passport should be valid for the duration of stay; carrying one valid well beyond the trip avoids any issues.