Scheduled Tribe income exemption applies only where the taxpayer...

Scheduled Tribe income exemption applies only where the taxpayer establishes income from a valid, bona fide source within the statutory conditions. Cash deposits treated as unexplained money do not become exempt solely because the taxpayer is a Scheduled Tribe member residing in a specified State. Bank statements, without books of account or other evidence establishing the source, are insufficient to prove the character of deposits. Consequently, additions for unexplained cash deposits remain taxable and the claimed exemption is unavailable.