Income-tax Act, 1961Section 44AA
- Specified professionals must maintain books
- Others: if income exceeds ₹1.2 lakh or turnover ₹10 lakh in any of three preceding years
- Individuals/HUFs: ₹2.5 lakh income / ₹25 lakh turnover
- Also where presumptive income is claimed lower
Applies to FY 2025-26 (AY 2026-27) and earlier years.