Summary: To compute corporate taxes, start with your net accounting profit, add back non-deductible expenses (like depreciation per books), subtract tax-allowable deductions (like IT-compliant depreciation), and include other income sources. Apply the tax rate based on your chosen regime (standard vs. concessional), add the applicable surcharge and 4% Health & Education Cess, and finally deduct your TDS and advance tax payments to find the net tax liability.