When manufactured goods are transferred to the trading account at the market price, the difference between the cost of production and the market price is known as the profit or loss on manufacturing.
To account for this difference, it is credited to the profit and loss account. If the market price is higher than the cost of production, it results in a profit, which is credited to the profit and loss account. Conversely, if the marke price is lower than the cost of production, it results in a loss, which is also credited to the profit and loss
account.