In what could further dampen the mood of crypto investors in the country, the goods and services tax (GST) council is mulling a 28 per cent tax on cryptocurrencies, at par with the current GST on casinos, betting and lottery, multiple media reports claimed.The services such as crypto mining along with sales and purchases are likely to attract the 28 per cent GST if the proposal goes through in the next GST meeting, according to reports.