This study investigated timber supply from Finnish non-industrial private forests (NIPF) using the consistent Tobit model and nationwide micropanel survey data on timber sales of 1299 forest owners during 2004–2008. The effects of forest owners’ gender and length of land tenure on timber supply were studied in particular. Women sold one cubic meter per hectare and per year (about 30%) less than men did. Female owners sold less frequently, but larger quantities at a time than did male owners. Short-tenure (<5 years) owners’ harvests were only affected by price, owner's age, income, timber stock and forest acreage. A group with relatively high harvest levels was young, low-income new forest owners.