Taxes are the key source of government revenue. Normally, tax share as a percentage of GDP is expected to increase as per capita GDP rises. This Insight shows that in Sri Lanka, this is not the case; the country’s per capita GDP has been rising but the tax to GDP ratio has been falling. Sri Lanka needs to improve its tax revenue to ensure that the government has enough money to spend towards welfare and growth while not running the risks of high budget deficits and debt levels. The example of Georgia in the last decade points to a significant opportunity to reverse this puzzling and strangling trend.