Raising the minimum wage on the labour market has direct effects on supply and demand. But its indirect effects extend beyond the labour market. They are analysed here with a macro model that distinguishes three types of work and ten industries, whose firms differ in their price structures and the degrees to which tax and social-insurance payments are avoided. Raising the minimum wage generates tension on the labour market and reduces employment of the unskilled. Since the price level rises faster than average pay and aggregate employment falls, so does real consumption. The firms' profits and investment decline, but the former can be offset even by a small increase in tax avoidance. Although the rise in the minimum wage boosts tax revenues, budgetary expenditures rise more and the balance deteriorates. Advocates of a higher minimum wage need to consider these consequences if they are to reach a responsible decision.