Should I choose the New Tax Regime or the Old Tax Regime?

New regime: lower slab rates, no deductions. Old regime: higher rates but allows 80C, 80D, HRA, LTA, home loan interest deductions. If your deductions exceed Rs3.75 lakh, old regime usually wins. If you have fewer deductions or are salaried with only standard deduction, new regime often saves more. Use a tax calculator.