This report provides detailed estimates of current delivered roundwood costs for lumber and pulp, as well as the costs of forest biomass harvested in a system integrated with the roundwood harvest. Three different harvesting systems were studied: full-tree to roadside, integrated cut-to-length and full-tree chipping, and cut-to-length. Two typical site types were used: a boreal softwood site and an Acadian mixedwood site. Results are presented in $/m3 and in $/gmt (green metric tonne) for both roundwood and forest biomass. The effects of haul distance, biomass moisture content and the utilization rate of the biomass production machines on total cost are analyzed. Other factors that affect the viability of forest biomass as an economic source of energy are discussed.