What Is Executive Order 12866? The Blueprint for Regulatory Review

Before a significant federal regulation can be published, it must pass through a ~50-person office tucked inside the Office of Management and Budget. That office, the Office of Information and Regulatory Affairs (OIRA), has reviewed over 48,000 rules since 1981 and modified nearly 38% of them before they reached the public. It operates on a $16 million annual budget, and it is the single most consequential checkpoint in the federal regulatory process.

OIRA’s authority over agency rulemaking flows primarily from one document: Executive Order 12866, which was signed by President Clinton on September 30, 1993. EO 12866 requires executive branch agencies to submit significant rules to OIRA before publication, conduct cost-benefit analysis justifying those rules, and obtain OIRA’s clearance before they can proceed. Every administration since Clinton has used this framework.

In 2025, through EO 14215, the Trump administration extended OIRA’s reach further by requiring independent regulatory agencies (e.g., the FCC, SEC, FERC, CFTC, NLRB, and others) to submit their rules for White House review for the first time. The scope of OIRA oversight now covers the full universe of federal rulemaking.

Understanding EO 12866 is a prerequisite for understanding any of it.

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The History Behind EO 12866

Presidential oversight of regulation didn’t begin with EO 12866. President Nixon launched the first formal White House regulatory review program in 1971 with the “Quality of Life Review,” which required agencies to submit environmental and safety regulations for OMB scrutiny before publication. President Ford formalized the concept with Executive Order 11821 (1974), which required agencies to prepare “inflation impact statements” for major rules. President Carter extended the framework with Executive Order 12044 (1978), requiring a broader “regulatory analysis,” including alternatives and economic consequences, for significant rules, and establishing an interagency review group to scrutinize the most consequential regulations.

But it was President Reagan who gave the modern framework its teeth. OIRA had been created by the Paperwork Reduction Act of 1980 originally focused on reducing federal paperwork burdens. Reagan’s Executive Order 12291 (1981) transformed it into a regulatory gatekeeper, requiring agencies to submit all “major” rules to OIRA before publication and to demonstrate that benefits exceeded costs. For the first time, White House review of regulatory substance was mandatory, systematic, and centralized in a single office.

Critics argued the order gave OIRA an effective veto over agency rulemaking and that it was used primarily as a deregulatory weapon, favoring cost analysis while systematically downplaying benefits. Furthermore, OIRA meetings with outside stakeholders were secretive with no public disclosure of who was lobbying for what.

President Clinton’s EO 12866 was a deliberate reset. It retained the framework of centralized White House review, which had survived two terms of Reagan and one term of Bush, but rebuilt it on a more defensible foundation:

• Explicit recognition that both benefits and costs must be weighed, not just costs
• Transparency requirements: OIRA must disclose its meetings with outside parties and publish the changes it makes to rules
• A defined list of significance criteria to limit OIRA’s reach to genuinely consequential rules, rather than allowing unlimited review of any rule
• A mandate for interagency coordination through OIRA, making regulatory review a collaborative White House process rather than a unilateral political check

The result was a framework that regulatory reformers and public interest advocates could both accept and which has survived, largely intact, through six subsequent administrations of both parties.

In President Clinton’s own words, EO 12866 was meant “to create a fair, open, streamlined system of regulatory review for our government to eliminate improper influence, delay, secrecy, and to set tough standards and time limits for regulation.”

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What Does EO 12866 Actually Require?

At its core, EO 12866 does three things.

1. It Requires Cost-Benefit Analysis

Before an agency can publish a significant rule, it must prepare a Regulatory Impact Analysis (RIA) assessing the rule’s expected benefits and costs. The RIA must:

• Identify the problem the regulation is designed to address
• Assess alternative approaches that could achieve the same goal at lower cost
• Quantify and monetize benefits and costs where possible
• Explain why the chosen approach is superior to the alternatives

The RIA requirement shapes how agencies draft rules from the beginning to build an economic case that will survive OIRA scrutiny. A rule with unquantified benefits or understated costs is vulnerable to being sent back.

2. It Creates a Significance Threshold

Not every rule triggers full OIRA review. EO 12866 defines a “significant regulatory action” as one that is likely to:

1. Have an annual effect on the economy of $100 million or more or adversely affect in a material way the economy, a sector of the economy, productivity, competition, jobs, the environment, public health or safety, or State, local, or tribal governments or communities;
2. Create serious inconsistency or otherwise interfere with an action taken or planned by another agency
3. Materially alter the budgetary impact of entitlements, grants, user fees, or loan programs or the rights and obligations of recipients
4. Raise novel legal or policy issues arising out of legal mandates, the President’s priorities, or the principles set forth in EO 12866

Rules meeting criterion #1 are designated as “economically significant.” These rules require a full RIA and the most intensive review. The other three criteria capture rules that are politically or legally consequential even if they don’t cross the economic threshold.

Note on the threshold: the original EO 12866 set the economic threshold at $100 million. Biden’s EO 14094 raised it to $200 million, the first adjustment in 30 years and added an automatic GDP-adjustment mechanism so it wouldn’t remain frozen for another three decades. However, Trump’s EO 14148 rescinded EO 14094, which returned the threshold to $100 million.

This significance framework is the gatekeeper for OIRA’s workload. Federal agencies publish roughly 3,000–4,000 rules per year. Of those, only a few hundred reach the “significant” threshold and go through OIRA review.

3. It Establishes the 90-Day Review Clock

Once an agency submits a significant rule to OIRA, the office has 90 days to complete its review. Extensions of up to 30 days are permitted with written justification, and further extensions require agreement between the agency head and the OIRA Administrator.

In practice, the 90-day clock is frequently exceeded. Over the last decade, OIRA reviews of proposed rules have averaged 94 days. For contested rules (i.e., rules involving interagency disagreements, major economic impacts, or high political salience) reviews can stretch to a year or more. The longest reviews in OIRA’s database have run over 1,700 days.

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What Happens During OIRA Review?

When an agency submits a rule, an OIRA desk officer assigned to that agency reads the draft rule and its supporting analysis and begins a process that typically involves several stages.

Interagency circulation. OIRA distributes the draft rule to relevant offices across the White House and federal government (e.g., the Council of Economic Advisers, the National Economic Council, the Domestic Policy Council, the Office of Science and Technology Policy, and any agencies with a stake in the rule’s subject matter). Each can submit comments and request changes.

Stakeholder meetings. Under the transparency requirements EO 12866 established, outside parties such as industry groups, nonprofits, trade associations, and law firms representing clients can request meetings with OIRA to present their views on a pending rule. OIRA must disclose these meetings publicly. Since 2014, OIRA has logged over 7,700 stakeholder meetings.

Review and negotiation. OIRA’s desk officer works with the agency to resolve issues raised during interagency review and stakeholder meetings. This is where most of OIRA’s actual influence is exercised — not through formal returns or rejections, but through back-and-forth negotiation over regulatory text and supporting analysis.

Decision. OIRA issues one of several possible conclusions:

The headline number: nearly 38% of all reviewed rules are returned to the agency with changes, a figure that underscores OIRA’s substantive influence on the content of federal regulations. Another 4.2% are withdrawn entirely, meaning the agency pulled the rule rather than proceed with OIRA’s modifications. This review is an active editorial process over the content of federal regulation.

Formal returns (i.e., where OIRA officially sends a rule back to the agency) are rare (less than 1% of reviews) and have effectively disappeared since the Bush administration, which used them 33 times across all return categories. Returns create a public paper trail. The far more common outcome is that agencies modify rules during review in response to OIRA feedback, and the rule is then cleared “consistent with change.”

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How Each Administration Has Modified EO 12866

EO 12866 has never been revoked, but most presidents since Clinton have amended or overlaid it with their own executive order. The result is a layered system that looks different depending on which administration is in office.

Obama: EO 13563 (2011)

President Obama’s Executive Order 13563 reaffirmed EO 12866 in full and added several requirements:

• Agencies must consider non-quantifiable benefits alongside economic costs, including benefits related to human dignity, fairness, and equity
• A mandate for retrospective review: agencies must periodically look back at existing rules to identify those that are outmoded, ineffective, insufficient, or excessively burdensome
• Stronger emphasis on public participation and plain-language rulemaking

EO 13563 was additive rather than structural. It expanded the analytical requirements without changing the fundamental OIRA review architecture.

Trump 1.0: EO 13771 (2017)

President Trump’s Executive Order 13771 imposed a strict “one-in, two-out” deregulatory mandate: for every new rule an agency issued, it had to identify two existing rules for elimination. Agencies also faced an incremental cost cap so that new rules could not add to the net regulatory cost burden unless offset by eliminating existing rules of equivalent cost.

This was the most aggressive use of the EO 12866 framework for explicitly deregulatory ends. OIRA’s role shifted from analytical reviewer to cost accountant, tracking deregulatory “savings” against new regulatory “debits.” As its intended result, agencies prioritized deregulatory actions to build up cost-reduction credits they could use to justify new rules where politically necessary.

Biden: EO 14094 (2023)

On his first day in office, President Biden revoked EO 13771 via EO 13992, eliminating the one-in, two-out deregulatory mandate immediately.

President Biden’s Executive Order 14094, signed in April 2023, was the most significant structural change to EO 12866 since its original enactment. Key changes:

• Raised the economic significance threshold from $100 million to $200 million annually — the first inflation adjustment since 1993, by amending Section 3(f)(1) of EO 12866
• Broadened the analytical framework to require agencies to recognize distributional impacts and equity in regulatory analysis
• Expanded public participation requirements, directing agencies to design comment opportunities to reach a broader range of affected parties and directing OIRA to increase transparency about which groups receive meetings and what materials they present

Note: EO 14094 was itself revoked by President Trump on his first day in office in January 2025, restoring the original $100 million threshold.

Trump 2.0: Independent Agencies and One-In, Ten-Out (2025)

The Trump 2.0 administration made two structural changes to the EO 12866 framework that go beyond anything attempted by prior administrations.

Expanding OIRA review to independent regulatory agencies. Every prior administration had applied EO 12866 only to non-independent executive branch agencies (e.g., EPA, HHS, DOT). Independent regulatory agencies such as the FCC, SEC, FERC, CFTC, and NLRB were historically exempt from OIRA EO 12866 review. In 2025, President Trump signed EO 14215 to require independent agencies to submit their rules to OIRA for review as well. This is the most significant expansion of presidential regulatory oversight since Reagan’s original EO 12291.

A “one-in, ten-out” deregulatory mandate. Where Trump 1.0 required agencies to eliminate two rules for every new one issued, Trump 2.0 raised the ratio to ten-for-one. For every new rule an agency issues, it must identify ten existing rules for elimination. This represents an aggressive acceleration of the deregulatory cost-accounting framework introduced in 2017.

Early data reflects the pace of the new approach. Average OIRA review time under Trump 2.0 has been approximately 44.9 days. Whether that speed reflects genuine deregulatory efficiency, a lighter inbound workload, or OIRA prioritizing clearance over scrutiny will become clearer as the pipeline matures.

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The EO 12866 Amendments at a Glance

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OIRA Review by the Numbers

The cumulative impact of EO 12866 across administrations is visible in the data:

Several patterns stand out:

The modification rate has risen steadily. Under Bush, OIRA modified 63% of reviewed rules. Under Obama, Trump 1.0, and Biden, that figure climbed to the low-to-mid 80s. The trend suggests that as OIRA review became more institutionalized, agencies increasingly submitted rules expecting to negotiate and OIRA increasingly engaged substantively rather than passing rules through unchanged.

Review volume has declined long-term. Bush submitted approximately 4,934 rules across two terms; Obama submitted 4,369; Trump 1.0 submitted 1,791. This secular decline reflects both deliberate slowdowns in new rulemaking and changes in what counts as “significant.”

The return mechanism effectively disappeared after Bush. Bush formally returned 33 rules to agencies, a public act that created a paper trail and made the political intervention visible. Obama used it 3 times; subsequent administrations have used it zero times. The far more common outcome today is that agencies modify rules during review in response to OIRA feedback, and the rule is cleared “consistent with change,” the same substantive outcome without the transparency.

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Case Study: A Rule Moving Through the EO 12866 Process

To make this concrete, consider how a typical economically significant rule actually moves through the EO 12866 framework.

The FDA’s rule establishing over-the-counter hearing aids — authorized by Congress in 2017 — illustrates a complete EO 12866 lifecycle:

Key observations: The rule went through OIRA review twice — once as a proposed rule, once as a final rule. Both times it was cleared “consistent with change,” meaning OIRA negotiated modifications before approving publication. The proposed rule review took 44 days; the final rule review took 28 days — consistent with the general pattern that OIRA scrutinizes proposed rules more heavily than final rules (average 46.7 days vs. 31.9 days across all reviews).

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Why EO 12866 Matters for Practitioners

For government affairs professionals: The significance determination is the first filter. If a rule isn’t designated “significant,” it may not go through full OIRA review — meaning the White House review window may be closed. A rule that does reach OIRA review is one where stakeholder meetings can be requested, interagency objections can be raised, and the RIA can be challenged. Knowing which rules are in OIRA review, and how long they’ve been there, is essential intelligence for anyone tracking a regulatory priority. And under Trump 2.0’s expansion, this now applies to independent regulatory agencies. Thus, practitioners tracking financial, telecommunications, or energy rules need to monitor OIRA in ways they never did before.

For regulatory attorneys: The RIA is both an analytical document and a litigation target. A rule whose cost-benefit analysis is methodologically flawed, that fails to consider reasonable alternatives, or that understates impacts on affected parties is more vulnerable to an “arbitrary and capricious” challenge under APA Section 706. The post-Loper Bright environment, where courts no longer defer to agencies’ statutory interpretations, makes the quality of agency reasoning, including EO 12866 compliance, more important than ever.

For compliance officers: High-significance rules receive the most interagency scrutiny, the most stakeholder attention, and the most political pressure, which means they are the most likely to change substantially between the proposed rule and final rule stages. A proposed rule imposing $500 million in annual compliance costs may look very different after OIRA review. The gap between the NPRM and the final rule is where the real negotiation happens.

For researchers and analysts: The layering of amendments, EO 12866, EO 13563, EO 13771, EO 14094, creates a time-series problem that must be accounted for in any quantitative analysis of OIRA data. The “economically significant” label means different things in 2015, 2019, and 2024. Review volume reflects political choices about rulemaking pace as much as underlying regulatory activity. Any trend analysis needs to be administration-aware.

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The Bottom Line

Executive Order 12866 is the operating system of the modern regulatory state. It answers three questions that every federal regulation must pass before it can take effect:

1. Is this rule significant enough to warrant White House review? (The significance threshold)
2. Do the benefits justify the costs? (The RIA requirement)
3. Has the White House had a chance to weigh in? (The OIRA review process)

Thirty years of amendments have added layers: Obama broadened the analytical lens, Trump 1.0 weaponized the cost framework, Biden redrew the threshold lines, Trump 2.0 extended the reach to independent agencies, but the core architecture has held. No president has revoked EO 12866, because no president has wanted to give up the tool it provides. The Trump 2.0 expansion to independent agencies is arguably the most consequential change since Reagan’s original order. For the first time, the White House has formal review authority over the full universe of federal rulemaking.

Understanding EO 12866 is not just background knowledge. It is a prerequisite for understanding why rules take as long as they do, why they change between proposal and finalization, and where the real leverage points are in the regulatory process.

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