There are two commonly used methods of accounting - Cash Basis and the Accruals Basis. In cash basis of accounting, income is recognized in books when it is received in cash, and expenses are offset when they are actually paid. Contrary to Cash Basis Accounting, in Accrual Basis Accounting, financial items are accounted for when they are earned and deductions are claimed when expenses are incurred, irrespective of the actual cash flow. The Accrual accounting method measures the financial performance of a company by recognizing accounting events regardless of when corresponding cash transactions occur. Accrual follows the matching principle in which the revenues are matched (or offset) to expenses in the accounting period in which the transaction occurs rather than when payment is made (or received).
At the beginning of each accounting period, there is an accounting practice to use reversing entries to cancel out the adjusting/accrual entries that were made to accrue revenues and expenses at the end of the previous accounting period. The use of Reversing Entries makes it easier to record subsequent transactions by eliminating the possibility of duplication.