The document discusses India's Union Budget 2018 and proposed changes to taxation laws regarding the digital economy. It proposes introducing the concept of "significant economic presence" to determine a foreign company's nexus with India for tax purposes, beyond just physical presence. This would allow India to tax digital businesses that have large revenues or user bases within India. The budget also expands the concept of "agency permanent establishment" to prevent avoidance of taxes through contractual arrangements. Overall, the changes aim to ensure foreign digital companies pay appropriate taxes in India as the existing laws are not adequate for the modern digital economy. However, implementing these unilateral changes may lead to increased tax litigation with other countries.