If you opt for the new tax regime, you cannot get any deductions coming under Chapter VIA. These include 80CCD, 80C, 80CCC, 80GG, 80GGC, 80GGA, 80DDB, 80G, 80DD, 80E and 80D. Besides, if you have any family pension income or housing loan, then you will also not get any deduction. Besides, allowances like LTA and HRA are not allowed.