There are 16 closed institutions in Finland. Thirteen of them are remand prisons which keep in custody mainly remand prisoners waiting for their sentence. In other prisons inmates sentenced to imprisonment or conversion of fine are kept.

Closed institutions (R=remand prison)

Helsinki prison
Hämeenlinna prison (R)
Jokela prison ( R )
Kerava prison
Konnunsuo prison
Kuopio prison ( R )
Kylmäkoski prison ( R )
Mikkeli prison ( R )
Oulu prison ( R )
Pelso prison (R)
Pyhäselkä prison ( R )
Riihimäki prison (R)
Sukeva prison (R)
Prison of Southwestern Finland ( R )
Vaasa prison ( R )
Vantaa prison ( R )

In closed institutions prisoners are paid work allowances for work, studies or participation in other activities. The allowances are tax-free.