The paper discusses possibilities of nancial analysis, assessment of variations and break even point calculation for assessment of investment plan eciency of an agricultural co-operative (capacity of stalls for dairy cows). Optimistic, pessimistic and neutral variant of possible economic development of return on investment are described. A possibility of obtaining a special subsidy of the Rural Development Programme is considered as well. The following variables are dened: purchase price of milk, milk production costs and milk yield per year.