Aggregate data are used to study determinants of income tax revenues a
nd taxpayer compliance in India during 1965-66 to 1992-93. The estimat
es show that both revenues collected and compliance were significantly
affected by tax structure (marginal tax rates and exemption limit). I
n addition, inflation as well as declining assessment intensity had a
significant negative effect, while traditional enforcement tools (sear
ches, penalties and prosecution activity) had only a limited effect. '
'Best practice'' enforcement, assessment and tax structure policies co
uld have yielded at most a 90% revenue increase, leaving India's incom
e tax performance below the average of countries with similar GDP per
capita. Thorough reform of tax administration is therefore needed to r
aise income tax collection in India to international standards.