This paper demonstrates that under conditions of imperfect (oligopolistic) competition, a transition from separate accounting (SA) to formula apportionment (FA) does not eliminate the problem of profit shifting via transfer pricing. In particular, if affiliates of a multinational firm face...

The OECD in its BEPS action plan 4 addresses tax base erosion by profit shifting through the use of tax deductible interest payments. Their main concern is interest deductions between outbound and inbound investment by groups. Studies of multinational firms show that the tax sensitivity of debt...

Some multinationals use the parent company as a lender to the group, whereas others set up an internal bank in a low tax jurisdiction. This paper discusses the link between capital structure choices and tax planning motives in multinational groups. We model the trade-off between the use of...