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Taxation and liability are compared as means of controlling harmful externalities, with a view toward explaining why the use of liability predominates over taxation. Taxation suffers from a disadvantage in the analysis: because taxes do not reflect all the variables affecting expected harm, inefficiency results, whereas efficiency under liability requires only assessment of actual harm. However, liability also suffers from a disadvantage: incentives are diluted because injurers escape suit. Joint use of taxation and liability is examined, and it is shown that liability should be employed fully, with taxation taking up the slack due to escape from suit.

This paper is concerned with the problem of combining a non-linear income tax with an indirect externality correcting tax. The analysis is performed in a model economy with two types of individuals and two types of consumption goods. The government wants to redistribute from the more able individuals to the less able, and also to correct for the externality arising from the total consumption of the dirty good. It turns out that the optimal tax structure depends on the complementarity or substitutability between the dirty good and leisure. The second-best externality correcting tax can be interpreted as consisting of a redistributive and an environmental component. Consequently, the dirt tax can be lower or higher than the first-best Pigouvian tax.

The financial crisis has prompted a reconsideration of the taxation of financial institutions, with practice outstripping principle: France, Germany, the United Kingdom and several other European countries have now introduced some form of bank tax, and the U.S. administration has revived its own proposal for such a charge. This paper considers the structure, appropriate rate, and revenue yield of corrective taxation of financial institutions addressed to two externalities, consequent on excessive risk-taking, prominent in the crisis: those that arise when such institutions are simply allowed t