Well drained soil of Pasvik Reserve has developed in sandy, sandy-loam, coarse-grained, float stone and moraine deposits. The variety of soil cover is defined by fractured relief and mosaic structure of quaternary deposits. Predominating soil is boreal-taiga podzol (illuvial and iron podzol); its thickness varies from 20 to 50 cm.
Illuvial and humic soil has not been registered in the territory of the reserve.
One can see peaty and podzol soil in flat and dished places, between ridges and on glacis. Its thickness is about 40 cm.
The presence of wetland sites and proximity to groundwater as well as abundance of snow in the reserve's area result in development of peaty and marshy soil, sometimes peat and marshy soil. It can be found on moraine plains in the central and northern parts of the reserve and on marine plains to the north of the blind dam.
Sod soil develops in ingressive marine terraces on the banks of the Paz River and the Menikkajoki. It differs from other types of soil by the presence of heavy sod formed by the roots of the Swedish turf, the horsetail, low shrubs and miscellaneous herbs as well as erosion; it is loamy, clayey and wet at all levels.