When transfer pricing issues are present, the divergent rules on burden of proof among OECD member countries will present serious problems if the strict legal rights implied by those rules are used as a guide for appropriate behaviour. For example, consider the case where the controlled transaction under examination involves one jurisdiction in which the burden of proof is on the taxpayer and a second jurisdiction in which the burden of proof is on the tax administration. If the burden of proof is guiding behaviour, the tax administration in the first jurisdiction might make an unsubstantiated assertion about the transfer pricing, which the taxpayer might accept, and the tax administration in the second jurisdiction would have the burden of disproving the pricing. It could be that neither the taxpayer in the second jurisdiction nor the tax administration in the first jurisdiction would be making efforts to establish an acceptable arm’s length price. This type of behaviour would set the stage for significant conflict as well as double taxation.