Mark-to-market margins (MTM or M2M) are payable based on closing prices at the end of each trading day. These margins will be paid by the buyer if the price declines and by the seller if the price rises. This margin is worked out on difference between the closing/clearing rate and the rate of the contract (if it is entered into on that day) or the previous day's clearing rate. The Exchange collects these margins from buyers if the prices decline and pays to the sellers and vice versa.