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Reducing GDP discrepancies: India needs radical improvements in estimation

Using GST data could help correct inflated real growth figures

GDP
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At this point, the agency needs to make another choice. Some choose to average the two measures. But Mospi uses only one series — the production side — as its official GDP estimates, on the grounds that it is more reliable. But Mospi also produces ex

Kartikeya BatraJosh FelmanArvind Subramanian

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India’s gross domestic product (GDP) estimates have long been the subject of controversy. For this reason, it is encouraging to see a recent news report that the government is planning to improve GDP measurement by using data from the goods and services tax (GST).  If the plan is implemented, it would represent a great step forward, and redound to the credit of the leadership at the Ministry of Statistics and Planning Implementation (Mospi). Consider why. 
 
Any statistical agency needs to decide whether it will measure GDP from the production side or from the expenditure side. In principle, the two measures
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