An across-the-board capital gains tax cut, an FPI-specific LTCG tax rate cut, and a change in the method of computing gains for FPIs in US dollar terms are some of the policy options before the government to rationalise equity taxation in India, investment banking and capital markets firm Jefferies has said. It said the chances of a differential tax treatment for foreign portfolio investors in equity cannot be ruled out, as long-term capital gains (LTCG) on equities are tax-exempt for FPIs in several emerging markets.