This document presents the methodology for calculating the family agricultural unit (UAF in Spanish), the result of a joint effort between the National Land Agency (ANT in Spanish), the Rural Land Planning, Land Adaptation and Agricultural Uses Unit (UPRA in Spanish) and the Ministry of Agriculture and Rural Development (MADR in Spanish). Its purpose is to estimate a basic unit of agricultural, livestock, aquaculture or forestry production, which allows a family to remunerate their work and have a capitalizable surplus in accordance with the provisions of the Colombian legal system.