Mr. David provided information about his income for the year ending June 30, 2012, including a basic salary of Rs. 500,000, various allowances totaling Rs. 230,500, rental income of Rs. 300,000 with a tax withholding of Rs. 7,500, other income sources totaling Rs. 249,000, and employer contributions of Rs. 49,086 to provident and pension funds. He is seeking assistance to compute his income tax liability for the year.