Willingness to pay tax

According to Laffer, economic activities are a decreasing function of the taxation rate. As a consequence, total tax revenue increases with the taxation rate at its lower levels and decreases against it at its higher levels. The result is the Laffer curve. According to him, the reason for this decrease lies in decreasing economic activities. Although this may be true for activities in the official (white) sector, in the unofficial (black) sector they can increase under the influence of an increasing taxation rate. Part of the Laffer effect may be nothing more than an activity switch away from the white towards the (hidden) black sector. This paper takes both effects into account: decreasing activities in the white sector combined with increasing activities in the black sector. It examines the computation of the maximum tax revenue generating taxation rate for a number of OECD countries. It concludes that, with the exception of Sweden, the marginal taxation rate in these countries is below its optimum.