We study the tax-spend nexus for Russian regional budgets. Causal relationship running from taxing to spending is found, thus supporting the concept “tax and spend” suggested by M. Friedman. Next, elasticity of expenditure by revenue is estimated for a panel of 80 regional budgets basing on data for 2000—2017. Estimates are in the range of 0.72 to 0.78 (depending on the econometric technique), which exceeds elasticity for the federal budget more than twice. This evidences that fiscal policy at the sub-federal (as distinct from the federal) level has clear pro-cyclical nature. Besides, the largest sensitivity of expenditure to revenue shocks is found for the item “national economy”, implying marked adverse implications for economic growth. We suggest to mitigate this effect by modifying fiscal rules for sub-federal budgets. They are currently aimed primarily at enhancing fiscal discipline, with less emphasis on countercyclical policy, insulating economy from fiscal shocks.