This book is a ready referencer to understand the tax implication of cash deposited during demonetization or in routine course, and the guidance on how to give response to the notices of Department. It also provides a complete understanding of the provisions relating to unexplained Income and Prohibition of Benami Property Transaction Act, 1988. This book has been written with the following objectives: Provides an idea about the tax consequences of demonetization; Provides an insight into various modes used by the taxpayers to explain their cash deposited in the bank; Explains the conditions under which various deeming provisions under Income Tax Act can be applied; Highlights the requirement of documentary evidence in support of explanation furnished by the assessee; Covers the circumstances under which enhancement, revision or reopening can be done; and Highlight the circumstances under which penal provisions in relation to cash deposits can be invoked.