The implementation of GST has been affected by a plethora of problems. Some of the major issues deserving mention are:
a) Despite the sharp reduction in the incidence of tax burden under the GST regime there was no reduction in the Maximum Retail Prices (MRP) but for a few commodities. The reduction of tax only resulted in windfall gains for corporates and traders at the expense of the consumers. The anti-profiteering clause (Section 171 of the CGST act, 2017) was not implemented along with GST and this left the consumer who was exploited by certain traders without any statutory forum to voice grievances. The state governments forwarded complaints to the Centre but no effective action could be taken. The general perception has been one of increase in the tax because the GST rates printed on the invoices were invariably higher than the erstwhile VAT rates.
b) The IGST Act, 2017, (section 18) provided that States would get their SGST share only when a dealer having inter-State trade pays output tax, files return and claims credit for input tax. In other words, IGST (which is CGST + SGST) which is paid in inter-State trade remains with the Centre which acts as a clearing house for States which are destinations of supply of goods and services and only subsequently trickles down to the States. This results in the States’ share in IGST remaining with the Centre for a considerable time, creating liquidity problems for the States and forcing them to borrow money and pay interest while their dues are available as interest free ways and means for the Centre. IGST Act, 2017, needs an amendment to provide for provisional apportionment of the States’ share without elapse of time.
c) The major disappointment was the functioning of the GSTN and the lacklustre performance of the IT backbone. For a whole year, tax collection was based on a summary statement submitted by taxpayers (GSTR 3B) from which it is not possible to verify the veracity of the input credit claims, which is generally believed to be excessive. The GST Council is yet to decide upon the final format of tax returns. Not only has this led to substantial leakage of revenue but also piling up of the export refunds.
d) The delay in implementation of e-Way bill and immediate abolition of checkposts have resulted in substantial tax evasion, especially in inter-State trade, where there was no effective mechanism to check flow of goods in the interregnum between the abolition of checkposts and implementation of the e-Way bill system. This is evident from the volatile trends in GST revenue during the first year of its implementation (table 5.1).
The GST rates did not stabilize in the initial year of implementation and there were frequent changes in them, which created expectations of further changes in future and impeded the implementation of a sustainable tax system. As already stated, return filing under GST has proved to be cumbersome for small traders and there have been moves to simplify the same. Many important provisions were not implemented along with GST and are only now being put in place. These have led to a situation where afterthought was taking precedence over careful planning before implementation.
These statutory and implementation issues have reduced the effectiveness of GST, which has also eroded the constitutional rights of the States. If the present costs of erosion of States’ taxing powers originally envisaged under the Constitution, more than outweigh the expected revenue gains and enhanced spending capabilities, the tenets of this tax reform would become unacceptable in the medium run. This would in turn lead to a call for revising the framework and implementation procedure of GST.