Sec 40A(3): Cash payment > ₹10,000/day (₹35,000 for transporters) disallowed as expense.
Sec 269SS: No cash loans/deposits ≥ ₹20,000/day from a person; penalty = 100%.
Sec 269T: No cash repayment of loans/deposits ≥ ₹20,000; penalty = 100%
Sec 269ST: No cash receipts ≥ ₹2,00,000/day/person/occasion; penalty = 100%.
Sec 80GGB/80GGC: No cash donation > ₹2,000 for political contributions
Sec 43(1): No cash purchase of fixed assets > ₹10,000 for tax benefits.
Sec 44AD/44ADA: Presumptive scheme not available if turnover/receipts > ₹5 crore and > 5% in cash.
Rule 6DD Exceptions: Certain cash payments under Sec 40A(3) allowed.
Section 13A: No cash donation > ₹2,000 to political parties for claiming tax exemption.
Sec 80D: No cash payment allowed for health insurance premiums (except preventive health check-ups, limit ₹5,000).
Sec 80G: No cash donation > ₹2,000 for claiming deduction.
Sec 269SU: Mandatory electronic payment facility for businesses with turnover > ₹50 crore; penalty ₹5,000/day for non-compliance.
Sec 10(23C): Charitable trusts/institutions can’t receive cash donations > ₹2,000 to claim exemption.
Sec 194N: TDS on cash withdrawals > ₹1 crore (2%); limit reduced to ₹20 lakh (5%) for non-filers.