The goods and services tax (GST), considered by many as the most radical tax reform in the country since independence, moved a step closer yesterday after a panel led by Chief Economic Advisor Arvind Subramanian submitted a report on it, outlining its contours.About nine years in the making, the GST will subsume most of the taxes and levies, radically changing the way tax is collected in India.Here are five ways in which the introduction of GST, which is expected to come into effect sometime in the next year, will help the economy.