Objectives: Stroke is a major global disease that requires extensive care and support from society and relatives. The aim of this study was to identify and quantify the long‐term informal support and to estimate the annual cost of informal support provided by spouses to their stroke surviving partner. Method: Data were based on the 7‐year follow‐up of the Sahlgrenska Academy Study on Ischemic Stroke. One‐third of the spouses stated that they provided support to their stroke surviving partner.