One often hears that taxes passed on businesses will be passed onto consumers. Some dispute this claim. By looking at this in a methodologically individualist fashion, doesn’t the answer become clear?
If taxes are raised, say the corporate tax is raised from 25 to 30%, each business would want to make up for the losses by raising their own prices. But how can they? If they raise their price and no one else does, then they start losing out on a share of the market. No business wants to be the first one to raise their prices and scare off customers.
However, if one is able to raise one’s prices in response to a tax increase with the cooperation of the rest of the industry, then the tax is indeed passed onto consumers. The standard Libertarian line on cartelization is that industries can cartelize if they use the state to decrease the amount of present and possible future producers within a given industry. If there is just a handful of businesses in a given industry they can come to agreements with each other and can manage to pass the tax onto consumers by acting in concert.
Rothbard pointed out that a raise in taxes on business will tend to reduce the amount of producers within a given industry simply because the increased costs of business will drive some producers out. So in a roundabout (non-BohmBawerkian) sense, increased taxes can manifest themselves as taxes on consumers insofar as they are able to catalyze a cartelization of an industry.
So in conclusion: saying that taxes on businesses are taxes on consumers is an oversimplification. In a purely free market, that would be false. In a market of cartelists, it is not necessarily false. And the action of increasing taxation is to the eventual advantage of cartelists.