Step 1: Register the company on the Income Tax portal with valid PAN.
Step 2: Collect audited financial statements and tax computation reports.
Step 3: Calculate net taxable income and deductions as per Income Tax Act.
Step 4: File the appropriate ITR form (usually ITR-6) online.
Step 5: Verify the return using DSC or EVC.
Step 6: Keep acknowledgment receipt and track filing status.
Step 7: Respond to any notices or queries from the Income Tax Department.