The Realization principle is a standard according to which the revenue is put into books only when it is earned. This happens when a product has been sold or a service has been provided. Contrary to this, matching principle states that while mentioning the net income of a period in the books, it is necessary to match the expenses as well as the revenues in the same period. The revenues and the cost incurred during the production etc are to be compared against each other. These principles are not used in cash accounting because the sale of a product or service or the earning of Revenues may not necessarily be through a Cash transaction.
