Objective: Assess the burden and identify the burden-related factors in home-baded informal caregivers of bedridden elderly attended by the Family Health Strategy. Methods: Analytical, cross-sectional study involving 208 informal caregivers. The data were collected between February and July 2017 by applying the characterization script and the Informal Caregiver Burden Assessment Questionnaire. For analysis purposes, the Statistical Package for the Social Science, version 20.0 was used.