The accrual concept that costs incurred to generate a revenue are expensed in the same period the revenue is known as the

Matching concept

Explanation:

This accounting principle is of the opinion that the expenses incurred in generating revenue should be matched with the revenue or income in order to ascertain whether or not profit or loss has been made,in other words,reporting only the revenue without considering the fact some amount has been incurred in a bid to generate the revenue does not a clear picture of the business underlying transactions.

It is simply aggregating like with like since costs incurred in the period are deducted from revenue in the same period.

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