The most important difference between marginal costing & Standared costing is that in marginal costing you need to considared all the manufacturing cost as a allocated cost, while in standared costing you need to considared all the manufacturing cast as period cost. for e.g. if u hv paid factory rent then full amount of rent will be taken as manufacturing cost while in stad. costing u treat as only period cost. There will alwalys difference in Closing stock figure.