India's tax-to-GDP ratio appears respectable among developing countries, when adjusted for income levels

*including social security contributions. Data pertains to 31 developing and emerging market economies with GDP size $100 billion or more and for which tax-to-GDP data was available. The above chart excludes oil-exporting Gulf countries viz. Saudi Arabia, Qatar, UAE and Kuwait. India's tax-to-GDP ratio (combining Centre and states) was 17.2% in 2015-16.