According to the latest Grant Thornton International Business Report (IBR), India ranked third during the April- June quarter of 2016.
"Delays in key reforms like GST, non-resolution of tax disputes, banking issues due to NPAs and need for significant recapitalisation of public sector banks are some of biggest concerns of Corporate India that have collectively impacted the business confidence affecting the overall business optimism in the country," the report said.
"This is a clear signal that while there is optimism in the market and great business opportunity in India, the issue that is bothering investors is the slow progress on key reforms, simplification of tedious government processes and regulatory uncertainties which is impacting India's ranking," Harish HV, Partner - India Leadership team, Grant Thornton India LLP said.
"The passing of GST bill which we hope will happen in the current parliament session should reverse this trend," he added.
While the business confidence in India has plummeted, there is a tremendous rise in the optimism for an increase in exports.
According to the survey, 35 per cent of respondents expect a rise in exports compared to 13 per cent in the last quarter. The country, however, continues to rank number 2 in citing regulations and red tape as a constraint on growth for two consecutive quarters.