Output from the non-formal, traditional or semi-subsistence sector is usually estimated on the basis-marketed production only. It is therefore often underestimated in national statistics and information on the relative importance of different sources of farm-household production is either not attempted or is unreliable. This paper provides an estimation of the magnitude and relative contribution of different production and consumption components for different farm-household types in Kavango. Some of the practical and conceptual issues involved are discussed, as well as the implications of the results obtained for development planning.