OLD SYSTEM Seller received (badla)after every settlement; buyer paid interest. No time limit for squaring up. Different margins on specified scrips on different stock exchanges.NEW SYSTEM Seller will not recieve interest; buyer not to pay. Transaction must be squared up within 90 days. 15% uniform margin on all specified scrips on all stock exchanges; 100% margin on volalite scrips.CHEKS ON SPECULATION Financiers can finance individual brokers only up to Rs 10 crore per settlement. A broker can carry forward trading in a particular scrip only up to Rs 50 lakh per day. A broker can carry forward a maximum trading of Rs 1 crore per day.