Tax liability for joint bank account

Only interest income would be taxable.Budget 2018 has proposed new section 80TTB so as to allow a deduction upto Rs. 50000/- in respect of interest income from deposits held by senior citizen. However, no deduction under section 80TTA shall be allowed in these cases.
Threshold limit for deduction of tax on interest income for senior citizens u/s 194A is proposed to be raised from Rs. 10000/- to Rs. 50000/-