Output or unit costing is used for industries that produce a single or similar products continuously. It can be used for industries like brick works, cement, dairies, steel mills, breweries, sugar mills, and paper mills. Unit costing involves preparing periodic cost sheets to calculate the average cost per unit by dividing total costs by units produced. Cost units may be things like 1000 bricks, a barrel of beer, or a ton of steel. The cost sheet shows total costs and cost per unit. Items like interest, taxes, and dividends are excluded from the cost sheet calculation. Stocks of raw materials, work in progress, and finished goods are accounted for using opening and closing balances when calculating costs.