Input method, output method can be used to estimate progress toward completion for the purpose of recognizing revenue over time.
What do you mean by revenue?
In accounting, revenue is the entire amount of income created by the sale of goods and services related to the principal operations of the business. Commercial revenue can also be referred to as sales or turnover. Some businesses get money from interest, royalties, or other payments. "Revenue" can refer to income in general or to the amount earned in a monetary unit during a period of time, as in "Last year, Company X had revenue of $42 million." Profits or net income are commonly defined as total revenue less total expenses in a particular period.
Output and input methods are methods of monitoring progress toward complete completion of a performance requirement. An output method considers the current fair market value of products and services transferred to the client.
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