The paper compares emission tax and emission quota in a mixed duopoly when the partial privatization of a public firm … its profit and the sum of consumer surplus and producer surplus. We show that emission tax is welfare superior to emission … quota regardless of the degree of partial privatization in (1), whereas the former is inferior to the latter when the degree …

In 2008, the Government of Zambia reformed its mining tax regime for large-scale copper mines through a unilateral … legislative change. The country went from having one of the lowest average effective tax rates and government take to be above the … average. We focus on a particularly controversial element of the packet of changes: the windfall tax. We trace adjustments in …

. Pollution is regulated by a tradable quota system where some quotas may have been allocated at the outset, i.e. before the quota … market is opened. We study how volatility in quota price affects firm behaviour, taking into account the impact of quota …, the optimal initial quota allocation turns out to resemble a grandfathering regime: clean firms are allocated no quotas …

instruments and set strictness of regulation with a view to influencing the policy of future, possibly different, governments. We …