How rent-seeking works

The loop

Why it is stable

Five mechanisms

Each states how it operates, what the public record establishes, what it cannot establish, and where to check a specific provision yourself.

1. 01

   Asymmetric organisation

   A benefit worth millions to a few beats a cost worth pennies to everyone.

   A provision worth $50m a year to two hundred firms is worth $250,000 each, enough to justify full-time staff, counsel and sustained attention. The same provision costs roughly fifteen cents per taxpayer. Nobody organises to recover fifteen cents. The result is that one side of the argument is permanently staffed and the other side is permanently absent, and this holds regardless of who is in office or what the merits are. It is the base mechanism; the others are ways of applying it.

   What the record shows, and doesn’t

   This is structural arithmetic rather than an empirical claim about anyone's conduct. It follows from the size of the benefit relative to the cost of participating, which is why economists have treated it as the default expectation since Mancur Olson set it out in 1965.

   Documented instance

   The excise tax on high-cost health plans was enacted in 2010 and repealed in 2019 before it ever took effect. It would have capped the largest tax expenditure in the code. Repeal passed both chambers with large bipartisan majorities. Exclusion of employer contributions for health insurance.

   Check it yourself: Senate LDA disclosures

   Search by issue area to see which organisations registered activity on a topic, and what they reported spending.

2. 02

   Lobbying expenditure

   Paid, disclosed, professional advocacy, including drafting help.

   Registered lobbying is legal, disclosed quarterly, and larger in practice than the public tends to assume, not because of anything improper, but because the work is mundane and continuous: tracking markups, supplying analysis, proposing statutory text. Congressional staff are few, the tax code is vast, and the party with the most detailed argument about a subsection frequently supplies the language for it. Influence here operates through information and drafting capacity rather than through inducement.

   What the record shows, and doesn’t

   Disclosure is real but coarse. Filings report spending by issue area over a quarter, not by bill, by provision, or by member. A filing tells you an organisation was active on 'taxation'. It cannot tell you which clause it argued for, or whether the argument worked. Nothing in the disclosure regime connects a dollar to an outcome.

   Documented instance

   Opportunity Zones were enacted in 2017 without the reporting requirements that appeared in the earlier standalone bills. The omission delayed evaluation of the programme by years; bipartisan reform proposals now focus on restoring exactly those requirements. Opportunity Zone capital gains deferral and exclusion.

   Check it yourself: Senate LDA quarterly filings

   Filings list the registrant, the client, the issue areas and the specific bills named. Bill-level detail is often present even though spending is not broken down by bill.

3. 03

   Campaign finance

   Contributions to candidates, committees and independent spenders.

   Contributions to candidates and party committees are capped and itemised. Independent expenditure, spending that advocates for or against a candidate without coordinating with them, is uncapped, and where it flows through organisations that do not disclose their donors it is traceable only to the spender, not to the original source. The two channels have very different visibility, and the less visible one has grown faster.

   What the record shows, and doesn’t

   This is the mechanism most often asserted and least often demonstrated. Contribution records are public and precise, and voting records are public and precise, but a correlation between them supports at least three readings: money changed a vote, money followed a position the member already held, or both track a shared constituency. Distinguishing these requires careful design, timing around the vote, within-member change over time, comparison to similar members. A raw total beside a tally shows none of that, which is why this site does not print one.

   Documented instance

   Carried interest repeal has been introduced repeatedly since 2007, with sponsors from both parties and endorsements from presidents of both parties. In nearly two decades it produced one enacted change: a three-year holding period that most affected funds already satisfied.

   Check it yourself: FEC campaign finance data

   Itemised contributions searchable by contributor, recipient and cycle. Independent expenditure is reported separately and by spender rather than by original donor.

4. 04

   The revolving door

   Movement between the industries a rule affects and the offices that write it.

   People move between congressional staff, agency positions and the sectors those bodies oversee, in both directions. The mechanism does not require anyone to act improperly, and mostly nobody does: expertise is genuinely scarce, and the people who understand a subsection are disproportionately the people who have worked with it. But the same movement transmits assumptions about what is workable and what is normal, and future employment prospects can shape present judgement without anyone intending it or being conscious of it.

   What the record shows, and doesn’t

   Movement is documented, lobbying registrations record prior government positions, and appointments are public, so the fact of a transition is verifiable. Its effect is not. There is no way to observe a decision that was never made, or an argument that was never pressed. This mechanism is the hardest of the five to evidence and the easiest to assert, and it is where analysis most often outruns what the record can support.

   Documented instance

   Carryover basis was enacted in 1976, requiring heirs to inherit a decedent's original cost. It was delayed, then retroactively repealed in 1980 before ever taking effect, the sharpest instance in the code of an enacted reform being undone before it operated. Step-up in basis at death.

   Check it yourself: LDA registrations, covered positions

   Registrants must disclose previous covered executive or legislative branch positions. This makes transitions into lobbying traceable; transitions out of government into industry generally are not covered.

5. 05

   Rulemaking and expiry dates

   The work continues after enactment, in agency rules, and at every sunset.

   A statute is the beginning. Definitions get settled in agency rulemaking, where comment periods are open to anyone but are answered in practice by the parties with counsel and a direct stake. Then there are expiry dates. A provision enacted with a sunset creates a recurring deadline at which an organised beneficiary class must be attended to and a diffuse public need not be. Sunsets are often presented as fiscal discipline; in operation they are scheduled opportunities, and they convert a one-time win into a standing relationship.

   What the record shows, and doesn’t

   Rulemaking dockets are public and comments are attributed, so participation is fully observable, who commented, what they asked for, and what the final rule said. What the record does not show is which comment moved which decision. The sunset dynamic is directly observable in the statute and in cost estimates, and needs no inference at all.

   Documented instance

   The qualified business income deduction was enacted in 2017 with an expiry at the end of 2025. In July 2025 the sunset was removed and the deduction made permanent, at an unchanged 20%. Qualified business income deduction (§199A).

   Check it yourself: Regulations.gov dockets

   Every comment on a proposed federal rule is public and attributed, including the full text of what each party asked for.

What this does not establish