We show that the presence of a strategic tax policy increases the incentive for a horizontal merger compared to the … a horizontal merger that has been ignored in the existing literature. In contrast to the usual belief, we also show that … a horizontal merger may benefit the consumers and the society. …

We analyze the optimal dynamic policy of an antitrust authority towards horizontal mergers when merger proposals are … endogenous and occur over time. Approving a currently proposed merger will affect the profitability and welfare effects of … surplus by using a completely myopic merger review policy that approves a merger today if and only if it does not lower …