Indian demand is likely to be around 650 tonnes in 2017, compared to a 10-year average of 845 tonnes, Somasundaram PR, Managing Director of WGC's India operations, told Reuters. Demand was 666.1 tonnes in 2016.
"In the September quarter, the newly introduced Goods and Services Tax (GST) and anti-money laundering legislation around jewellery retail transactions deterred gold buyers," he said.
As part of a new nationwide sales tax regime introduced in July, the GST on gold jumped to 3 per cent from 1.2 per cent previously.
Authorities in September tightened anti-money laundering rules for jewellers, although the new regulations have since been temporarily shelved.
The country's gold demand in the July-September quarter dropped 24 per cent from a year ago to 145.9 tonnes, the WGC said in a report published on Thursday.
In the October-December quarter, demand will be more "robust than the September quarter" due to the wedding season and festivals such as Diwali, when buying bullion is considered auspicious, Somasundaram said.
Two-thirds of India's gold demand comes from rural areas.
But monsoon rains did not fall evenly around the country this year, hitting incomes in some farming areas, said the WGC, adding that "this could have a knock-on effect on jewellery demand in these areas over coming quarters".
Industry officials previously said India's gold imports in the last quarter of 2017 could drop by a fourth from a year ago as investors seek better returns from riskier assets like equities.