Quarterly settlement payout in Zerodha refers to the transfer of unused funds from a clients trading account back to their primary bank account once every quarter. As per SEBIs circular, this transfer must happen at least once in a period of 90 days. At Zerodha, the settlement happens on the first Friday of the quarter, i.e., the first Friday of January, April, July, and October. If the first Friday is a trading holiday, the settlement will happen on the previous trading day. However, if the client is inactive for 30 calendar days, the funds are transferred back to the primary bank account once a month. The settlements are done separately for Equity & Commodity segments.