The accounting concept which allows the use of a particular method for treating a transaction for a reasonable number of years is

The accounting concept which allows the use of a particular method for treating a transaction for a reasonable number of years is called consistency. This means that once a company has adopted an accounting policy or method for a particular type of transaction, it should continue to use that method consistently for similar transactions in subsequent accounting periods, unless there is a valid reason for changing it. Consistency in accounting ensures that financial statements are comparable from one period to the next, which is important for decision-making by investors and other stakeholders.