Chapter 1: The nature and purpose of cost and management accounting
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Data may be collected from many different sources, both inside and outside an
organisation.
A cost accounting system records data about the costs of operations and activities
within the entity. The sources of cost accounting data within an organisation
include invoices, receipts, inventory records and time sheets. Many of the
documents from which cost data is captured are internally-generated documents,
such as time sheets and material requisition notes.
Data is analysed and processed to produce management information, often in the
form of:
routine reports, or
specially-prepared reports, or
answers to ‘one-off’ enquiries that are input to a computer system.
Information produced from cost accounting data is management accounting
information. Management accounting systems also obtain information from other
sources, including external sources, but the cost accounting system is a major source
of management accounting information.
1.3 Attributes of good information
Information is only useful to managers if it possesses certain qualities or attributes.
Understandable. Information should be understandable to the individuals who
use it. For accountants, this often means having to make sure that the figures
provided to managers are set out clearly and are properly explained.
Purpose and relevance. Information should have a purpose and should be
needed by management for a particular reason. Unless information has a
purpose it has no value at all and it makes no sense to provide it. The
information provided should also be relevant to this purpose.
Reliable. Management information must be reliable. This means that the user of
the information can rely on the information to make a decision, and should not
be worried about whether the information is correct. Information does not have
to be 100% accurate. In many cases, information might be provided in the form
of an estimate or forecast. However, information should be as accurate or
reliable as it needs to be for its purpose. It might also need to be up-to-date.
Sufficiently complete. Information should be as complete as it needs to be.
There should be no important omissions. However, information in management
reports should not be excessive, because important information may be hidden
in the unimportant information, and it will take managers too long to read and
understand.
Timeliness. Information must be timely. This means that it must be made
available to managers in time to use it for making a decision. If information is
provided too late for its purpose, it has no value. With the widespread
computerisation of accounting systems, including cost accounting systems, it
might be appropriate for up-to-date management accounting information to be
available on line and on demand whenever it is needed.
Comparability. In accounting it is often useful to make comparisons, such as
comparisons of current year results with previous years, or comparisons of