Source Digest — Mercatus Center, Regulatory Accumulation and Its Costs

Status (April 2026): Complete standard digest. Two thematic clusters: (1) the measurement of regulatory accumulation via RegData, (2) the causal claim that accumulation reduces growth and productivity. Relevant beyond tax: it generalizes the ratchet argument from rates/base to administrative law.

Source identification

Thematic cluster 1: measuring regulatory accumulation

Core claims

• The stock of federal regulations in the United States has grown roughly monotonically since 1970. The Code of Federal Regulations expanded from approximately 400,000 restrictions in 1970 to over 1.1 million by 2020, as measured by RegData's count of binding terms ("shall," "must," "required," "prohibited," etc.).
• Removal of regulations is rare and typically small in magnitude. Accumulation is therefore the default dynamic.
• RegData enables industry- and agency-level measurement, allowing researchers to correlate regulatory intensity with outcomes (employment, productivity, prices).

Representative statistic

"The number of restrictive words in the Code of Federal Regulations has grown from approximately 400,000 in 1970 to more than 1 million today — an increase of over 150 percent in the regulatory stock."

Thematic cluster 2: estimated economic costs

Core claims

• Mercatus researchers (Bailey, Thomas, and McLaughlin in companion work) estimate that regulatory accumulation since 1980 has reduced U.S. GDP growth by roughly 0.8 percentage points annually.
• A 1980–2012 counterfactual estimate suggests U.S. GDP would have been approximately $4 trillion larger in 2012 absent the accumulation effect.
• Accumulation disproportionately burdens small firms (fixed compliance cost spread across fewer employees), contributing to declining business dynamism.

Research context

Interpretive notes

• The regulatory-accumulation claim is a generalization of the ratchet beyond tax: even without rate increases, the stock of binding rules governs economic activity, and that stock behaves like a one-way ratchet.
• The normative implication ("accumulation is bad") does not follow automatically from the empirical observation ("accumulation occurs"). Many individual rules produce real welfare gains (clean air, product safety, labor standards). The policy question is how to sustain useful rules while enabling removal of obsolete or redundant ones.
• Progressive critics (e.g., Roosevelt Institute) argue that regulation-reduction studies typically fail to net out regulatory benefits (reduced pollution, safer workplaces, fewer financial crises) against the estimated GDP cost. Future digests will include a countervailing perspective on this point.

Project 2028 mapping

• Exchange: Government Overreach, Ownership as Transition, and the Ratchet Problem. Strengthens the Round 1 concession that the ratchet is a real institutional dynamic — and suggests it applies not just to tax rates/base but to administrative law generally.
• Problem Map: Domain 4 (Institutional capacity); also bears on Domain 5 (Housing) where cumulative zoning and permitting rules are a canonical case study of the regulatory-accumulation thesis.
• Principles: Tests Principle 4 (accountable, legible, reversible power) — specifically the "reversible" component. If the administrative state is structurally non-reversible, Principle 4 requires explicit anti-ratchet machinery.
• Exchange #14 (Permitting Stack): Directly relevant. If regulatory accumulation blocks abundance in housing and energy, the permitting-stack proposal becomes a concrete forward-motion example of bounded governance.
• Round 2 use: Pair with heterodox sources on regulation-benefit measurement (to be added in later batches) to avoid importing one side of the debate as consensus.

Cross-references