There are a number of conceptual issues that underly how accounting works: 
Accruals concept : revenues recognized when earned, expenses recognized when assets are consumed. 
Auditors will only certify the financial statements of a business that have been prepared under the accruals concept. 
Conservatism concept: revenues only recognized when there is a reasonable certainty that they will be realized, whereas expenses are recognized sooner, when there is a reasonable possibility that they will be incurred. 
Consistency concept: once a business chooses to use a specific accounting method, it should continue using it on a go-forward basis. By doing so, the financial statements prepared in multiple periods can be reliably compared. 
Economic entity concept: the transactions of a business are to be kept separate from those of its owners. 
Going concern concept: financial statements are prepared on the assumption that the business will remain in operation in future periods. Under this assumption, revenue and expense recognition may be deferred to a future period, when the company is still operating. Otherwise, all expense recognition in particular would be accelerated into the current period. 
Matching concept: the expenses related to revenue should be recognized in the same period in which the revenue was recognized.  
Materiality concept: transactions should be recorded when not doing so might alter the decisions made by a reader of a company's financial statements. This tends to result in relatively small-size transactions being recorded, so that the financial statements comprehensively represent the financial results, financial position, and cash flows of a business.  |