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Accounting Priciples Board

The Accounting Principles Board, known as the APB, was the body that set accounting rules in the United States between 1959 and 1973. It issued numbered Opinions and Statements that shaped reporting on topics such as leases, income tax and business combinations.

It was wound up and replaced by the Financial Accounting Standards Board, which has set United States accounting standards since.

From the Money Master HQ dictionary, founded by Shihan Sheriff (FCMA, VP of Finance at Nomod, CFO at Esanjo Ventures). How these definitions are written.

What it means

The APB was a committee of the American Institute of Certified Public Accountants, made up largely of practising accountants from the big audit firms. It replaced the earlier Committee on Accounting Procedure and was given the job of narrowing the number of acceptable accounting treatments.

Its output took the form of Opinions, numbered sequentially, plus broader Statements on principles. It matters to a modern reader for two reasons.

First, several APB Opinions were never fully rewritten and their substance still sits inside current United States rules, so the name turns up in older contracts, policy manuals and audit files. Second, the reasons for its failure explain why standard setting looks the way it does now.

The APB was criticised for being part time, for being dominated by audit firms whose clients had a direct interest in the outcome, and for being slow to act on controversial topics. The investment credit episode, in which the Board issued an Opinion and then had to back down under commercial and political pressure, badly damaged its authority.

A study group eventually recommended replacing it with a full time, independent body. The successor arrangement separated the standard setter from the profession.

The Financial Accounting Standards Board was created with full time paid members who cut ties to their former firms, funded through an independent foundation and overseen by trustees. That independence, together with a published due process of exposure drafts and public comment, is the APB's main legacy.

For a non-finance manager the practical takeaway is simple: if a document refers to an APB Opinion, treat it as historic United States guidance and check what has superseded it. The codification of United States standards now organises rules by topic rather than by issuing body, so the old numbers are a lookup exercise.

Anything written against an APB Opinion should be reread before it is relied on. The Board's numbering also survives in teaching and in professional examinations, where APB Opinions are used as examples of how a rule evolves over time.

Comparing an old Opinion with the standard that replaced it is one of the clearest ways to see why disclosure requirements keep growing. The direction of travel has been consistently towards more transparency and fewer permitted alternatives.

In practice

Real-world examples.

1

Example

An acquirer reviewing a target's 1990s era accounting policy manual finds references to APB Opinion 16 on business combinations. The buyer's accountant maps each reference to the current standard before relying on any of it. Two policies turn out to be superseded, including the treatment of acquisition costs.

2

Example

A finance lecturer uses APB Opinion 25 on share based payment as a teaching example of how a weak rule invites structuring. Students compare it with the current requirement to measure awards at fair value. The exercise shows why independence of the standard setter matters in practice.

3

Example

A pension fund trustee asks why United States and international rules differ on a particular disclosure. The scheme actuary explains the history, from the APB through the creation of the Financial Accounting Standards Board to the convergence projects that followed. The trustee stops treating the difference as an error in the accounts.

Case study

Seen in the real world.

The following is an illustrative, fictional account used to show how legacy guidance causes practical trouble. Calderwood Mills, an invented family owned textile group, had an accounting policy manual last rewritten in the early 1990s and built around APB Opinions by number. When the family decided to sell, the buyer's due diligence team asked which framework the accounts were prepared under.

Nobody at Calderwood could answer cleanly. Five policies cited Opinions that had been superseded, three cited standards that had themselves been replaced, and the group auditor had been applying current rules without updating the manual. The diligence team could not reconcile the written policy to the reported numbers and held back part of the purchase price pending a review.

Calderwood spent six weeks rewriting the manual against the current codification, with a short appendix mapping each old reference to its replacement. The illustrative lesson is that policy documentation ages quietly, and a reference to a body that stopped issuing guidance decades ago is a sign that nobody has opened the file in years.

Watch out

Common mistakes.

  • Citing an APB Opinion as if it were current guidance. The Board stopped issuing Opinions in the early 1970s and the surviving content now lives inside the codified standards.
  • Confusing the Accounting Principles Board with the Auditing Standards Board. One set accounting rules for preparers, the other sets rules for auditors.
  • Assuming every APB Opinion was swept away when the Board closed. Some were carried forward largely intact and continued to govern practice for decades.

Questions

People also ask.

Who replaced the Accounting Principles Board?

The Financial Accounting Standards Board, an independent full time body funded and overseen separately from the audit profession.

Why was the APB considered too close to the audit firms?

Its members served part time while continuing to work at firms whose clients were affected by its decisions, which made its conclusions easy to attack as self interested.

Does the APB have any relevance outside the United States?

Mainly as history and as context for why standard setters are now structured to be independent, since other countries developed their own bodies and largely follow international standards.

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Last updated · October 8, 2026
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The information provided in this finance dictionary is for educational and informational purposes only. It should not be construed as financial, investment, legal, or tax advice. Always consult with a qualified professional before making any financial decisions. Money Master HQ makes no representations or warranties about the accuracy, completeness, or suitability of this information. Use of this content is at your own risk.