The forest soils have generally been a source with a constant rate of emissions and the enormous removal by forest biomass practically determine the size and trend of the forest sink in Finland between 1990 and 2010. There were dips in early 1990ies and late 2000s linked to poor economic growth and thus lower demand for forest products by industry. Overall, the removal of CO2 between 1990 and 2010 has been governed by the annual increment and the drain of growing stock. Due to effective and sustainable forest management practices in past decades, the annual increment of growing stock in Finland has increased steadily.