# What Is Accounting Theory in Financial Reporting?

![Accounting Theory](https://www.investopedia.com/thmb/1jnVwWjt8bN8mKbPYRrr7L_S2IU=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/Accounting-Theory-resized-465a4a7fe9f649b2bf1c93c001135a01.jpg)

*— Investopedia / Xiaojie Liu*

## What Is Accounting Theory?

Accounting theory is a set of assumptions, frameworks, and methodologies used in the study and application of financial reporting principles. The study of accounting theory involves a review of both the historical foundations of [accounting practices](https://www.investopedia.com/terms/a/accounting-practice.asp), as well as the way in which accounting practices are changed and added to the regulatory framework that governs [financial statements](https://www.investopedia.com/terms/f/financial-statements.asp) and financial reporting.

### Key Takeaways

*   Accounting theory provides a guide for effective accounting and financial reporting.
*   Accounting theory involves the assumptions and methodologies used in financial reporting, requiring a review of accounting practices and the regulatory framework.  
*   The Financial Accounting Standards Board (FASB) issues generally accepted accounting principles (GAAP) which aim to improve comparability and consistency in accounting information.
*   Accounting theory is a continuously evolving subject, and it must adapt to new ways of doing business, new technological standards, and gaps that are discovered in reporting mechanisms.

## Understanding Accounting Theory

All theories of accounting are bound by the conceptual framework of accounting. This framework is provided by the [Financial Accounting Standards Board](https://www.investopedia.com/terms/f/fasb.asp) (FASB), an independent entity that works to outline and establish the key objectives of financial reporting by businesses, both public and private. Further, accounting theory can be thought of as the logical reasoning that helps evaluate and guide accounting practices. Accounting theory, as regulatory standards evolve, also helps develop new accounting practices and procedures.

> **Important**
>
> Accounting theory is more qualitative than quantitative, in that it is a guide for effective accounting and financial reporting.

The most important aspect of accounting theory is usefulness. In the [corporate finance](https://www.investopedia.com/terms/c/corporatefinance.asp) world, this means that all financial statements should provide important information that can be used by financial statement readers to make informed business decisions. This also means that accounting theory is intentionally flexible so that it can produce effective financial information, even when the legal environment changes.

In addition to usefulness, accounting theory states that all accounting information should be relevant, reliable, comparable, and consistent. What this essentially means is that all financial statements need to be accurate and adhere to U.S. [generally accepted accounting principles (GAAP)](https://www.investopedia.com/terms/g/gaap.asp). Adherence to GAAP allows the preparation of financial statements to be both consistent to a company's past financials and comparable to the financials of other companies.

Finally, accounting theory requires that all accounting and financial professionals operate under four assumptions. The first assumption states that a business is a separate entity from its owners or creditors. The second affirms the belief that a company will continue to exist and not go bankrupt. The third assumes that all financial statements are prepared with dollar amounts and not with other numbers like units of production. Finally, all financial statements must be prepared on a monthly or annual basis.

## Special Considerations

Accounting as a discipline has existed since the 15th century. Since then, both businesses and [economies](https://www.investopedia.com/terms/e/economy.asp) have greatly evolved. Accounting theory is a continuously evolving subject, and it must adapt to new ways of doing business, new technological standards, and gaps that are discovered in reporting mechanisms.

For example, organizations such as the International Accounting Standards Board help create and revise practical applications of accounting theory through modifications to their [International Financial Reporting Standards](https://www.investopedia.com/terms/i/ifrs.asp) (IFRS). Professionals such as [Certified Public Accountants](https://www.investopedia.com/terms/c/cpa.asp) (CPAs) help companies navigate new and established accounting standards.

> **Article Sources**
>
> 1.  Financial Accounting Standards Board. "[About the FASB](https://www.fasb.org/facts/)." Accessed April 17, 2021.
>     
> 2.  International Financial Reporting Standards Foundation. "[Who We Are](https://www.ifrs.org/about-us/who-we-are/)." Accessed April 17, 2021.