Offset – the compulsory inward investment imposed on foreign defence suppliers by a purchasing government – is tolerated as a feature of the market rather than embraced. Tolerance of offset has become increasingly important over the last ten years. Since 1999, 22 countries have introduced formal offset legislation or policies. The scope of offset obligations is also increasing in terms of both the quota required by the buyer and the range of contractors obligated. This helps to explain why the European Commission (EC) and the US Department of Commerce (DoC) view offset as legally and commercially problematic.