If you're a doctor, lawyer, CA, architect, or engineer running your own practice, Section 44ADA is your biggest compliance simplifier. Instead of maintaining thick books of account and proving every expense, you simply declare 50% of your gross receipts as taxable profit — and the Income Tax Department accepts it. No justification needed.
Here's the rule: If you're a resident individual engaged in a specified profession under Section 44AA (doctors, lawyers, CAs, engineers, architects, interior designers, film artists, and technical consultants) and your total gross receipts don't exceed ₹50 lakhs in the financial year, you can opt in. The moment you do, 50% of gross receipts = your deemed profit, chargeable under Profits & Gains of Business or Profession. You can always declare a higher profit if you wish — but never lower without consequences (more on that below). Critically, all deductions under Sections 30 to 38 — rent, depreciation, repairs, staff salaries — are deemed to have already been allowed inside that 50%. You cannot claim them again separately. Also watch the WDV trap: depreciation is treated as if you claimed it every year regardless, so when you sell a professional asset, capital gains are calculated on a reduced WDV.
What if your actual profit is below 50%? You can declare it lower — but only if your total income doesn't exceed the basic exemption limit (₹2.5 lakhs). The moment your income crosses the exemption limit and you want to show less than 50%, you must maintain books under Section 44AA and get a tax audit done under Section 44AB. This condition is asked as a 4-mark question very frequently in exams — examiners love asking when the audit becomes mandatory. Remember: opting out of 44ADA doesn't mean you escape books and audit; it means you're compelled into them.