Internal Revenue Service

The Internal Revenue Service (IRS) appears here as more than a tax collector: it is an enforcement institution whose public credibility helps sustain voluntary cooperation. Because people can benefit from public goods without paying for them, compliance depends partly on whether taxpayers believe others are contributing and whether evaders face a real prospect of punishment. The agency’s work therefore has a dual consequence: it pursues individual cases and signals to the wider public whether the rules are being enforced fairly.

The enforcement problem

Taxpaying is a cooperation problem because many government services are nonexcludable: people can benefit from them whether or not they personally contribute. The account gives the example of a national missile-defense system that would protect a household regardless of its tax payments, and Interstate 95, which anyone could use once built. From an individual’s narrow economic perspective, avoiding taxes while still receiving public benefits can look rational. If enough people do so, however, the collective goods on which everyone relies are put at risk.

The law does not eliminate that incentive by itself. In 2001, the IRS audited only 0.5 percent of all returns, making the historical chance of being caught appear slim. The book argues that a functioning tax system consequently depends on more than the formal prohibition against evasion: people must be willing, even if grudgingly, to pay. Compliance is individually costly and collectively beneficial, and the benefits materialize only when participation is broad.

Evasion and perceived fairness

The agency’s enforcement challenge grew amid a proliferation of ways to conceal income or avoid taxes. John Mathewson, who ran Guardian Bank and Trust in the Cayman Islands, kept clients’ deposits from the IRS and supplied debit cards for access to their accounts. After leaving the Caymans in 1995, he was arrested for money laundering. He traded information about Guardian’s depositors to the government, pleading guilty and receiving five years’ probation and 500 hours of community service. His records and testimony revealed that offshore banking served not only criminals but also Americans who had made their money through legitimate businesses and professions and did not want to pay taxes on it.

The pattern was not confined to Mathewson’s clients. By the end of the 1990s, two million Americans had credit cards from offshore banks, compared with almost none fifteen years earlier. Taxpayers were also offered schemes involving trusts, false theories that the income tax had not been enacted, double books, or personal expenses disguised as charitable or church contributions. Rough estimates put the cost of such evasion to the United States as high as $200 billion a year. Although most Americans continued to pay honestly and to say that cheating was wrong, the visibility of schemes that seemed to work, the growing complexity of the tax code, and corporate tax shelters fed doubts about whether the system was fair. The question captured in a 2001 Forbes headline—whether an honest taxpayer was a sucker—was therefore not merely rhetorical: perceived evasion could weaken other people’s willingness to comply.

Conditional consent and public trust

The account describes taxpayers as conditional consenters: many are prepared to pay their share if they believe that others are doing the same and that those who evade taxes are likely to be caught and punished. This makes reciprocity central to the agency’s task. People may want to act properly, but they are less willing to bear the cost if they think neighbors are getting away with free riding. The relevant trust is not only confidence in fellow citizens; it also includes confidence that government spends tax revenues wisely and that the state can distinguish guilty people from innocent ones.

The IRS’s public image therefore has consequences beyond any single investigation. Mark Matthews, head of the agency’s Criminal Investigative Division, described the purpose of enforcement as deterring people who might otherwise let aggressive tax planning become outright evasion. He stressed that a large part of the agency’s mission was making people believe the system worked. The measure of a criminal investigation was thus not simply how many offenders it caught. Its broader effect depended on whether the public saw enforcement as credible enough to discourage prospective violators and reassure compliant taxpayers.

Enforcement within a cooperative system

The argument does not treat legal enforcement as either irrelevant or sufficient. The prospect of being caught can make cooperation more likely to succeed, and confidence that the state will punish free riders can make people more willing to contribute. But law alone cannot generate a durable norm of compliance. The American system is described as comparatively successful in tax compliance despite strong anti-tax rhetoric, and its success rests on an underlying willingness to support public goods as well as on regulation.

That willingness can develop over time. People may begin paying because they fear prosecution; as they recognize the mutual benefits of taxpaying, participation can become an accepted norm. The result is a positive-feedback loop: widespread compliance reinforces the expectation that others will comply, which in turn helps sustain further compliance. In this account, the IRS is one part of that loop. Its enforcement can support reciprocal trust, but the agency cannot by itself settle what counts as a fair share or manufacture the civic consent on which a healthy tax system ultimately depends.

Institutional role and limits

The discussion places the IRS within a broader account of how organizations gather and use information. Decentralized systems can preserve local knowledge and specialized judgment, but information may remain trapped in separate compartments unless it is shared and aggregated. The same institutional tension appears in the treatment of the intelligence community: fragmented holdings can prevent decision-makers from seeing the collective significance of information. For the IRS, the related point is narrower but important: enforcement has to make the system’s operation visible enough for taxpayers to believe that evasion is not simply rewarded.

The agency’s significance therefore lies neither in punishment alone nor in an assumption that every taxpayer will act from civic virtue. Its work contributes to the conditions under which self-interested people can still cooperate: rules must exist, evaders must face a credible risk of detection, and taxpayers must have reason to believe that other participants are not being left to carry the burden alone. When those expectations hold, enforcement and voluntary compliance can reinforce each other; when they fail, the rational temptation to free ride threatens the public benefits taxation is meant to provide.