Mr. Zubaer Karim is a service holder. His basic salary (BS) is Tk. 22,000 per month; Dearness allowance 10% of BS; Two festive bonuses, each equal to one months BS; House rent 40% of BS; Conveyance allowance Tk. 2,700 per month; Medical allowance Tk. 2,000 per month, Entertainment allowance Tk. 200 per month and commission Tk 3,500. His contribution to recognized provident fund (RPF) is 10% of BS. His employer also contributed the same to the fund. He received Tk. 4,500 as interest on RPF @ 10%.

Calculate the taxable income and tax liability of Mr. Zubaer Karim for the year ended 30 June 2020. You should ignore the investment allowances for tax liability calculation.