Actuarial Standards of Practice, known as ASOPs, are the binding professional standards that govern how actuaries in the United States perform and communicate their work. The Actuarial Standards Board maintains roughly 60 individual standards covering insurance pricing, pension funding, enterprise risk management, data quality, modeling, and the way results are reported. Before the standards took root in the late 1980s, practitioners relied on personal judgment or fragmented industry norms, which produced inconsistent financial reporting. ASOPs give regulators, employers, and the public a common yardstick for measuring whether an actuary’s work meets professional expectations.
Who Writes the Standards
The Actuarial Standards Board (ASB) holds exclusive authority to create, revise, and retire ASOPs for actuarial work performed in the United States.1Actuarial Standards Board. Introductory Actuarial Standard of Practice It has nine members representing different areas of actuarial practice, appointed by a selection committee drawn from the presidents and presidents-elect of the American Academy of Actuaries, the Casualty Actuarial Society, and the Society of Actuaries.2Actuarial Standards Board. About ASB The ASB sits under the American Academy of Actuaries, but its cross-organization appointment structure keeps the standards broadly representative of the profession.
Who Must Follow ASOPs
ASOPs bind members of the five U.S.-based actuarial organizations: the American Academy of Actuaries, the Society of Actuaries, the Casualty Actuarial Society, the Conference of Consulting Actuaries, and the American Society of Pension Professionals and Actuaries.1Actuarial Standards Board. Introductory Actuarial Standard of Practice Enforcement runs through each organization’s Code of Professional Conduct. Precept 3 requires that an actuary ensure all actuarial services performed by or under their direction satisfy applicable standards of practice, and that the actuary stay current as those standards change.3American Academy of Actuaries. Code of Professional Conduct
Applicability turns on the nature of the work, not the job title. A data scientist running actuarial models at an insurance company, a consultant advising a pension fund, and a traditional pricing actuary are all held to the same standards if their work qualifies as actuarial services. When no specific ASOP addresses a situation, the Code directs the actuary to use professional judgment guided by generally accepted actuarial principles.3American Academy of Actuaries. Code of Professional Conduct
What a Standard Looks Like Inside
Every ASOP follows a uniform template. The opening section states the standard’s purpose, the types of work it covers, and anything it explicitly excludes. That scoping language determines whether a given assignment falls under the standard at all.
Definitions get their own section and carry real weight. When a standard uses a term such as “actuarial report” or “intended user,” the definition controls what those words mean across the profession. ASOP No. 1 is the overarching introductory standard, and its definitions apply to every other ASOP unless a specific standard overrides them.1Actuarial Standards Board. Introductory Actuarial Standard of Practice Cross-references link related standards, appendices explain the board’s reasoning, and each standard carries an effective date that fixes when its requirements apply to new work.
One design principle shapes the entire system: ASOPs are principles-based rather than prescriptive. They provide an analytical framework for exercising professional judgment and identify factors to consider, rather than mandating a single method or a particular outcome.1Actuarial Standards Board. Introductory Actuarial Standard of Practice Actuarial problems vary too much for one-size-fits-all instructions to work.
What ASOPs Cover
A handful of ASOPs apply to every actuary regardless of specialty. ASOP No. 1 explains how all other ASOPs work, ASOP No. 23 governs data quality, and ASOP No. 41 covers actuarial communications.4Actuarial Standards Board. Actuarial Standard of Practice No. 41 – Actuarial Communications Beyond those, standards branch into practice-specific categories. Health insurance standards address premium setting and future claim liabilities. Life insurance standards govern policy reserve valuations. Property and casualty standards guide rate-making for coverage against accidents and natural disasters. Pension standards focus on funding levels and the selection of assumptions for measuring long-term obligations. The newest additions include ASOP No. 56 on modeling, effective October 2020, and ASOP No. 58 on enterprise risk management, adopted in December 2024.5Actuarial Standards Board. Modeling
Data Quality Under ASOP No. 23
Whether an actuary compiled the data personally or received it from someone else, ASOP No. 23 requires a review of that data unless the actuary judges a review unnecessary or impractical. The review involves making a reasonable effort to understand what each data element means, checking for questionable values or inconsistent relationships, and comparing current data against prior periods when similar work has been done before. If questionable data could materially affect results, the actuary should take further steps to improve it. Unresolved issues that remain significant must be disclosed. If the actuary decides not to perform a review at all, that decision, the reasoning behind it, and any resulting limitations on the work product must also be disclosed.6Actuarial Standards Board. ASOP No. 23 Revision – Data Quality
The standard also draws clear boundaries around what the actuary is not expected to do: detect falsified data, build new data compilations just to hunt for problems, or perform a full audit. The review ASOP No. 23 contemplates is an informal examination of obvious characteristics to determine whether the data appears reasonable for the assignment.
Modeling Under ASOP No. 56
ASOP No. 56 responds to the growing reliance on complex models across every practice area. When issuing an actuarial report that involves modeling, the actuary must disclose the model’s intended purpose, any material inconsistencies among assumptions, material limitations and known weaknesses, and the extent of any reliance on models built by others or on outside experts.7Actuarial Standards Board. ASOP No. 56 – Modeling If the aggregation of individually reasonable assumptions produces unreasonable output, that too must be disclosed.
How Compliance Shows Up in Reports
ASOP No. 41 is the backbone of actuarial communication. Every actuarial report must identify the actuary responsible for the work, the intended users, the scope and purpose of the assignment, and any cautions about risk and uncertainty.8Actuarial Standards Board. Actuarial Communications Reports must also disclose any conflict of interest, any information the actuary relied on but does not take responsibility for, and any limitations on how the findings should be used.
Deviations from an ASOP require their own disclosures. If an actuary departs materially from a standard’s guidance for any reason, the actuary must explain the departure and assess its effect on the results. This is where the system polices itself. Regulators reviewing financial filings look for these specific statements to confirm that the numbers rest on standardized methods, and the absence of a required disclosure is itself a professional violation.8Actuarial Standards Board. Actuarial Communications
When the Law Overrides a Standard
State insurance regulations, federal pension law, and other binding authority sometimes require methods or assumptions different from what an ASOP would otherwise call for. ASOP No. 1 addresses this directly: when the requirements of law conflict with the guidance of an ASOP, the law governs.9Actuarial Standards Board. ASOP No. 1 – Introductory Actuarial Standard of Practice
Following the law instead of the ASOP is not treated as a violation, provided the disclosure is handled correctly. The actuary must identify the applicable law, specify which assumptions or methods it prescribed, and state that the report was prepared in accordance with that law.8Actuarial Standards Board. Actuarial Communications The ASB has standardized this language across all ASOPs, inserting a uniform deviation provision that directs the actuary to the disclosure requirements in ASOP No. 41 whenever a departure from guidance is needed to comply with a statute or regulation.10Actuarial Standards Board. Revision of Deviation Language for Standards
What Happens When an Actuary Doesn’t Follow Them
The Actuarial Board for Counseling and Discipline (ABCD) was established by the U.S. actuarial organizations to investigate potential violations of the Code of Professional Conduct, which includes failures to comply with ASOPs.11American Academy of Actuaries. About the Actuarial Board for Counseling and Discipline Anyone can file a complaint, including peers, regulators, or members of the public. The ABCD sends the complaint to the subject actuary for response, then decides whether to dismiss, assign a mediator, or open an investigation. If an investigation proceeds, the investigator reviews work papers and the standards allegedly violated and produces a report. The full board then decides whether to dismiss, counsel the actuary, investigate further, or schedule a hearing.12American Academy of Actuaries. ABCD Investigation Process Target Timeline
If the ABCD finds a violation, it can recommend one of five outcomes: counseling, private reprimand, public reprimand, suspension, or expulsion.13American Academy of Actuaries. Types of Discipline The final decision on punishment rests with the actuary’s member organization, not the ABCD itself. Expulsion is rare, but the possibility of losing credentials gives the system real teeth. For a profession whose work underpins insurance solvency and retirement security, that accountability is the point.