The Model GST Law makes it clear that the proposed Goods and Services Tax (GST) regime would have imperfections and anomalies to begin with.For instance, input tax credit on capital goods would not be available for most sectors like transportation, construction and infrastructure. It follows that there would be no `seamless and efficient' crediting of taxes paid, to avoid tax-on-tax and cascading rates, as called for by the Arvind Subramanian Committee last year. But no matter. The GST regime now in the works would be better designed and `clean' than is usually the case abroad. Now, over 160 nations have some form of value-added tax (VAT), which is what GST is. The idea, of course, is to reform the indirect tax structure, with tax payable only on the value-added at each stage of output or delivery , and input tax credits available for taxes already paid. But as the Subramanian panel report noted, the tax regimes abroad tend to be either overly...