Purpose – The purpose of this study is to examine the effects of agricultural policy reform – specifically the change from market to direct payment support – on income variability of Swiss farming households. In addition, the observed heterogeneity in income risks across farms and time is explained in terms of farm and regional characteristics. Design/methodology/approach – Unbalanced farm-level panel data of the Swiss farm accountancy network (FADN) are used to construct coefficients of variation of five-year overlapping time intervals for total household income and gross farm revenues over the period 1992 to 2009. Linear fixed effect models are applied to measure the effect of specialization, off-farm income, direct payments, farm size, a...