Change of transaction value without change in mrp

Dear,

Ours is a manufacturing Unit producing Unani Medicines. Earlier we have been computing excise duty on Transaction Value and paying excise duty. During certain periods in the past we have changed the Selling Price i.e Transaction Value to our Distributors due to changes in the cost of inputs but without any change in MRP.

Is there any legal provision that MRP has necessarily be changed correspondigly if we increase or decrease our transaction Value prices. if any circular from the MInistry is there. Are we liable to pay any additional duty on account of this.

awaiting earliest clarification. thanks in advance,

S. Rajagopalan

09868169984

essargi @ gmail.com