What is Section 44ADA?
Section 44ADA is a presumptive taxation scheme designed by the IT Department for professionals (IT, Legal, Medical, Engineering, Architecture, etc.). It assumes that 50% of your gross receipts are your business expenses.
Therefore, you only pay tax on the remaining 50% of your income. You do not need to maintain complex books of accounts or keep receipts for expenses. If you are a high-earning software engineer, asking your employer to hire you as a "Consultant" rather than an "Employee" can literally save you lakhs in taxes legally.