Highlights The rate structure will be comprehensively reviewed in due course She proposed to withdraw exemptions on tunnel boring machine New Delhi: In order to rationalise custom duty structure, ease compliance and give impetus to domestic manufacturing, Union Finance Minister Nirmala Sitharaman on Monday (February 1) several indirect tax proposals, tabling the Union Budget 2021-22 in Parliament. The key Union Budget 2021-22 for the overhaul of the Custom duty structure are given here along with other proposals. 1. FURTHER SIMPLIFICATION OF GST FM Sitharaman, in her budget speech, said that record GST collections have been made in the last few months. She said several measures have been taken to further simplify the GST. The capacity of the GSTN system has been announced. Deep analytics and Artificial Intelligence have been deployed to identify tax evaders and fake billers, launching special drives against them. The Finance Minister assured the House that every possible measure shall be taken to smoothen the GST further and remove anomalies such as the inverted duty structure.