Helsinki has Finland's only metro and trams. All Finnish cities and towns have a bus network, with departures every 10 to 15 minutes in large towns, and every 30 to 60 minutes in smaller towns. Fares are around €2.50 to €3.50; pay the driver.
The taxi (taksi) in Finland is an expensive creature, particularly for short rides. There’s a flagfall of €3.90 in Helsinki (often more elsewhere) with a minimum charge of €7 and a per-kilometre charge of up to €1.09. These fares increase if there are more than four passengers, and there’s a surcharge for night and weekend service. Hail taxis on the street or at bus and train stations, or call or book one online.
Uber operates in Helsinki, while there are also ride-share services with Kyydit.net (www.kyydit.net/en/) or Carpool Finland (www.carpoolworld.com/carpool_FINLAND_favorites.html).