Every major federal rule carries a price tag. Before an agency issues one, it must count the costs and the gains. It must also say who will feel the change. A short guidance document tells agency staff how to do that math. It is called Circular A-4. Most people have never heard of it.
The document comes from the Office of Management and Budget, or OMB. As the agency notes in its Federal Register notice, the circular gives agencies guidance on this analysis. Agencies reach for it when a major rule needs a formal count of gains and losses.
This article explains what the circular requires. It also traces where the practice began. And it shows why one quiet memo still steers the price of rules today.
What the Circular Requires
The circular is not a law. It is guidance, but agencies treat it as firm practice. Executive Order 12866, signed on September 30, 1993, set the duty. Under the order, agencies must prepare such an analysis for major rules, the notice says. We covered a connected angle in September's Rule Surge: Why the Federal Register Balloons Each Fall.
The circular tells them how. It explains how to count benefits and costs. It also covers effects that resist a price tag.
The written result has a name. A regulatory impact analysis is a document created before a new government rule is introduced. Many countries now require one, with scope and weight that vary. The goal is a close look at a rule's likely impacts. That way, decision makers can see whether the gains are set to beat the costs.
Where the Practice Began
Pricing rules is older than the circular. The first such reviews are generally traced to the Carter years. The administration ordered inflation impact studies starting in 1978, according to the entry. The Reagan White House then widened the duty. It made benefit-cost analysis the standard method. Readers following this should also see Rulemaking: How a Federal Rule Actually Gets Made.
The idea spread well beyond Washington. By 2000, 20 of 28 OECD countries had adopted some form of the duty, the entry notes. Few countries that adopt it ever walk away.
How the Analysis Shapes a Rule
The math matters because the numbers feed real choices. If a draft shows costs above gains, the agency may soften it. It may delay the work or drop it. A review that finds large net gains arms a rule for its critics. It helps in court and in Congress.
Agencies also use the review to compare options. A ban on a practice can be weighed against a simple warning label. The circular pushes agencies toward the option with the most net gain. That is not always the boldest one.
The 2023 Revision
OMB rewrote the guidance in 2023. In a notice published that November, OMB announced a revised Circular A-4. Its title is Regulatory Analysis. The step followed a public comment period and an outside review of the draft.
Supporters said the update modernized old methods. Critics said it tilted the math toward more rules. Both camps agreed on one point. Whoever sets the method sets the numbers. And whoever sets the numbers shapes the rulebook.
Why the Document Matters
Circular A-4 sits where economics meets power. It is a technical memo, yet it steers which clean air rules move ahead. It shapes which safety rules stall. It even shapes how much protection the public gets for each dollar of cost.
For firms, the review frames the compliance load an agency is willing to assign. For the public, it decides whether gains that resist a price tag still get counted. Cleaner air and safer workplaces are easy to value and hard to price.
Conclusion
Circular A-4 shows how a quiet document can steer loud debates. It bans nothing. It funds nothing. It simply tells agencies how to add up the gains and losses of a proposed rule. Run under one shared method, that arithmetic sets the price tag of the regulatory state.
