Government Regulatory Impact Assessment

A regulatory impact assessment analyzes the likely costs, benefits, and other effects of a proposed regulation before it's adopted. Many governments require one by law for significant or "major" rules, but which rules trigger the requirement, who reviews the assessment, and what methodology is expected all vary by country and level of government — a US federal agency's analysis reviewed under executive order, a UK or EU regulatory impact assessment, a state or provincial requirement, and a local rule with no formal requirement at all are each governed by different rules. This is distinct from an Environmental Impact Assessment, which is specifically about a project's environmental effects; a regulatory impact assessment covers the broader economic and social effects of a proposed regulation of any kind.

Key components

• A clearly stated problem — what specific problem the regulation addresses, and why existing rules, market mechanisms, or voluntary measures don't already solve it, stated concretely enough to test whether the proposed rule is actually needed.
• Quantified costs and benefits, with a stated methodology — compliance costs, administrative costs, and expected benefits estimated with numbers where feasible, alongside the method and assumptions used to reach them, not bare assertions of magnitude.
• Alternatives considered, including doing nothing — a genuine comparison of realistically different approaches (a lighter-touch rule, a market-based mechanism, no new regulation at all) against the proposed option, not just variations on the preferred design.
• A distributional analysis — who specifically bears the costs and who receives the benefits, since compliance costs often fall on a different group than the one that benefits.
• An implementation and enforcement plan — how compliance will be monitored and enforced, and what it will cost the government to administer the rule once adopted.

Why comparing against a genuine "do nothing" baseline matters

Any proposed rule can be made to look beneficial if it's compared only to a worse hypothetical rule, rather than to the realistic alternative of leaving the current rules in place. The baseline that actually tests a regulation's case is what happens if nothing changes — current compliance costs, current levels of the harm the rule targets, and current enforcement gaps, projected forward without the new rule. An assessment that skips this and instead compares the proposed rule only to a strawman alternative, or to an even more burdensome version of itself, cannot show whether the rule is actually worth adopting; it can only show that it beats an option nobody was seriously considering.

Common pitfalls

• Costs and benefits asserted without a stated methodology — a number given with no explanation of how it was derived, what data or assumptions fed into it, or what discount rate or time horizon was used, can't be checked, reproduced, or meaningfully disputed by reviewers or the public.
• An alternatives section that only varies the preferred option — comparing three versions of the same basic approach, rather than genuinely different mechanisms (including no new regulation), produces an analysis that was always going to recommend the option drafted first.
• A single net-benefit number that glosses over distributional effects — reporting that benefits exceed costs overall, without showing who bears the costs and who gets the benefits, hides cases where a regulation imposes real costs on one group to produce diffuse benefits for a different group entirely.
• No real "do nothing" baseline — comparing the proposed rule to a weaker strawman instead of to current rules left in place inflates the apparent case for adopting it.
• Benefits assumed to fully materialize on the compliance timeline assumed — treating projected benefits and the compliance schedule as certain, rather than stating the uncertainty and risk around both, overstates the rule's net case.

Learn more

• Environmental Impact Assessment for the parallel, narrower analysis focused specifically on a project's environmental effects rather than a regulation's broader economic and social effects.
• Government Bill Drafting for the legislative text that may authorize or require the regulation this assessment analyzes.
• Government Public Comment Response for responding to public input received on the proposed rule after the assessment is published.
• Policy Brief for summarizing an assessment's findings for a decision-maker who has to decide whether to proceed.