Credit Rating Agencies: 3 Shocking Conflicts Driving $96 Trillion Debt

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Three private companies control 96% of the global credit ratings market, passing judgment on whether governments and corporations can repay their debts. The credit rating agencies that wield this power, S&P Global Ratings, Moody’s, and Fitch Ratings, are paid by the very entities they evaluate. This arrangement has persisted for more than five decades, surviving a financial crisis that cost the global economy trillions, regulatory overhauls on two continents, and over $2.2 billion in legal settlements. The conflict of interest at the center of credit rating agencies has never been resolved.

How Credit Rating Agencies Work

Credit rating agencies assess the risk that a borrower, whether a corporation, a government, or a financial product, will fail to repay its debts. They assign letter grades: AAA is the safest, and ratings decline through AA, A, BBB, and so on down to D for default. These grades determine how much it costs to borrow. A AAA-rated government pays lower interest rates than one rated BBB, because investors perceive less risk.^[s]

The three credit rating agencies that dominate the market, often called the “Big Three,” collectively control approximately 96% of global ratings. In sovereign credit ratings specifically, their share reaches 99%.^[s] Their assessments influence trillions of dollars in investment decisions every year.

Credit Rating Agencies and the Issuer-Pays Problem

The central conflict is structural. Until the 1970s, investors paid for credit ratings through a subscription model. Then the industry flipped: issuers began paying the agencies to rate their own debt.^[s] The company or government seeking a favorable rating became the customer writing the check.

This “issuer-pays” model creates a straightforward incentive problem. An issuer shopping for the best rating can take its business to whichever agency offers the most generous assessment. Credit rating agencies competing for that revenue have a financial motive to keep clients satisfied, which can mean inflating ratings. The subscriber-pays model had its own conflicts (investors might want pessimistic ratings to get higher yields), but the issuer-pays version proved far more consequential.

The 2008 Financial Crisis: A Catastrophic Failure

The conflict of interest in credit rating agencies was not a theoretical concern. It produced measurable, catastrophic results during the 2007-2008 financial crisis. The agencies awarded their highest AAA ratings to mortgage-backed securities and collateralized debt obligations that were built on shaky subprime loans. By 2006, Moody’s alone was earning $881 million from structured finance, more than its entire business revenue had been in 2001.^[s]

When housing prices collapsed, reality caught up. In 2007, Moody’s downgraded 83% of the $869 billion in mortgage securities it had rated AAA just the previous year.^[s] The Financial Crisis Inquiry Commission later concluded that credit rating agencies were “key enablers of the financial meltdown,” and the U.S. Senate Permanent Subcommittee on Investigations found that “inaccurate AAA credit ratings introduced risk into the U.S. financial system and constituted a key cause of the financial crisis.”^[s]

Legal Consequences, Limited Reform

The legal fallout was significant in dollar terms. In 2015, S&P paid $1.375 billion to settle charges that it had defrauded investors by assigning ratings that did not reflect the true risk of mortgage-related securities. The SEC found that S&P had “elevated its own financial interests above investors by loosening its rating criteria to obtain business and then obscuring these changes from investors.”^[s] In 2017, Moody’s paid nearly $864 million to settle similar allegations.^[s] Neither agency admitted to violating the law.

Congress responded with the Dodd-Frank Act in 2010, creating an Office of Credit Ratings at the SEC and mandating the removal of regulatory references to credit ratings. But an assessment by law professor Frank Partnoy, published on the Harvard Law School Forum on Corporate Governance, found these reforms had “little or no impact.” The market for credit ratings remains “a large and impenetrable oligopoly,” and credit ratings remain “enormously important but have little or no informational value.”^[s]

Sovereign Ratings and Geopolitical Power

The influence of credit rating agencies extends to entire nations. When S&P downgraded Greece’s debt to junk status in April 2010, it raised the country’s borrowing costs and made an international bailout all but inevitable.^[s] EU officials accused the Big Three of accelerating the eurozone’s sovereign debt crisis.

The United States itself is no longer exempt. S&P downgraded U.S. debt in 2011, Fitch followed in 2023, and in May 2025, Moody’s became the last of the three to strip the country of its top rating, cutting it to Aa1. Moody’s cited that “successive U.S. administrations and Congress have failed to agree on measures to reverse the trend of large annual fiscal deficits and growing interest costs.”^[s]

All three credit rating agencies being based in the United States raises questions about geographic bias. African nations, for example, argue that the Big Three’s ratings cost the continent up to $74.5 billion through unduly pessimistic assessments that raise borrowing costs on international markets.^[s]

Why the Oligopoly Persists

The 1975 SEC decision to create the “nationally recognized statistical rating organization” (NRSRO) designation, initially granted only to the Big Three, embedded their dominance into federal regulation.^[s] Banks, pension funds, and insurance companies are required by regulation to hold assets above certain rating thresholds, which means they need ratings from agencies that regulators recognize. New entrants face enormous barriers.

The Big Three have also expanded through acquisitions, absorbing local credit rating agencies in India, Argentina, Chile, Malaysia, Peru, and Egypt.^[s] This strategy eliminates potential competitors while providing local market access.

One study analyzing thousands of ratings between 2003 and 2015 found that credit rating agencies have become more cautious since the crisis, reducing missed defaults by 57 to 72%.^[s] The threat of reputational damage from another high-profile failure appears to partially offset the issuer-pays incentive. But “partially” is doing significant work in that sentence. The fundamental business model remains unchanged.

What Would It Take to Fix This?

Several alternatives have been proposed. An investor-pays model would realign incentives, though it introduces its own conflicts. A government-run rating agency would remove the profit motive but create political pressure on sovereign ratings. The establishment of the Africa Credit Rating Agency (AfCRA) represents one attempt to offer an alternative voice, though it does not aim to replace the Big Three.^[s]

Frank Partnoy, a law professor who has studied credit rating agencies for decades, argues the most effective solution is the simplest: investors should stop giving their ratings so much weight.^[s] Sophisticated institutional investors already use far more detailed methods to assess credit risk, including option-adjusted valuation, stress tests, and recovery rate analysis. The credit rating agencies’ letter grades, by contrast, obscure the variables that matter most: probability of default, expected recovery, and correlation of defaults.

The global financial system still runs on a model where three companies get paid by the entities they judge, face minimal competition, and have survived every attempt at reform with their market power intact. Until that changes, the conflict of interest at the center of credit rating agencies remains the most important structural flaw in global debt markets.

How Credit Rating Agencies Operate

Credit rating agencies function as information intermediaries in debt capital markets, assessing the probability that an issuer of fixed-income securities will fail to meet its contractual obligations. The Big Three, S&P Global Ratings, Moody’s Investors Service, and Fitch Ratings, collectively control approximately 96% of the global ratings market and roughly 99% of the sovereign credit-rating sector.^[s] Their ratings carry regulatory weight: Basel capital adequacy requirements, money market fund investment restrictions, and insurance company reserve calculations all reference external credit ratings.

The agencies employ ordinal rating scales (AAA/Aaa at the top, descending through investment grade to speculative/junk territory) that compress complex credit risk into categorical buckets. This compression is itself a source of informational loss. As Frank Partnoy of the University of San Diego School of Law has argued, “letter ratings are a crude mechanism for information intermediation” that obscure the key analytical variables: probability of default (PD), loss given default (LGD), and default correlation.^[s]

The Issuer-Pays Conflict in Credit Rating Agencies

The structural conflict embedded in credit rating agencies stems from the transition in the 1970s from a subscriber-pays (investor-pays) model to an issuer-pays model. Under the current arrangement, the entity seeking a rating pays the agency for the initial assessment and ongoing surveillance.^[s]

This creates a principal-agent problem with misaligned incentives. The agency’s revenue depends on maintaining relationships with issuers, but its social function requires impartial assessment. The theoretical equilibrium is supposed to be maintained by reputational capital: agencies that inflate ratings will eventually be exposed, lose credibility, and lose business. The 2007-2008 crisis tested this theory to destruction.

By 2006, Moody’s structured finance revenue reached $881 million, exceeding its total 2001 revenue across all business lines.^[s] The revenue was generated by rating the same CDOs and RMBS that would soon collapse. In 2007, Moody’s downgraded 83% of the $869 billion in mortgage securities it had assigned AAA ratings in 2006.^[s] The velocity and magnitude of those downgrades are themselves evidence that the original ratings were not reflecting fundamental credit risk.

Post-Crisis Forensics: What Investigations Found

Multiple government bodies reached similar conclusions. The Financial Crisis Inquiry Commission (FCIC) called credit rating agencies “key enablers of the financial meltdown.” The U.S. Senate Permanent Subcommittee on Investigations concluded that “inaccurate AAA credit ratings introduced risk into the U.S. financial system and constituted a key cause of the financial crisis.”^[s]

The SEC found that S&P had “elevated its own financial interests above investors by loosening its rating criteria to obtain business and then obscuring these changes from investors.”^[s] S&P paid $1.375 billion in settlements in 2015; Moody’s paid $864 million in 2017.^[s] Neither admitted to legal violations, and neither was forced to alter its business model.

Regulatory Response and Its Limitations

The Dodd-Frank Act (2010) created the SEC’s Office of Credit Ratings, mandated annual examinations of NRSROs, and directed federal agencies to replace regulatory references to credit ratings with “appropriate” alternatives. In Europe, the European Securities and Markets Authority (ESMA) took on a similar supervisory role.^[s]

The results have been limited. Partnoy’s assessment is direct: “these reforms have had little or no impact.” Annual SEC investigations have uncovered failures in the same mortgage-related areas that triggered the crisis, but enforcement has been minimal. The SEC has also undermined Dodd-Frank’s accountability provisions, including the removal of rating agencies’ exemptions from Section 11 liability. Credit rating agencies continue to argue that their ratings are protected speech, a legal position that shields them from most investor lawsuits.^[s]

The NRSRO Barrier and Market Structure

The oligopoly’s durability traces to the SEC’s 1975 creation of the “nationally recognized statistical rating organization” (NRSRO) designation. Only the Big Three were initially certified. This decision embedded their ratings into the regulatory infrastructure: bank capital requirements, money market fund rules, and investment mandates all referenced NRSRO ratings, creating artificial demand that no new entrant could easily capture.^[s]

The Credit Rating Agency Reform Act of 2006 opened the NRSRO designation process, and additional agencies have since been registered. But market share has barely shifted. The Big Three have also pursued acquisitions of local agencies in developing economies, including India, Argentina, Chile, Malaysia, Peru, and Egypt, neutralizing emerging competition before it can gain scale.^[s]

Sovereign Credit Rating Agencies and Geopolitical Asymmetry

The sovereign rating arena exposes additional conflict layers. When credit rating agencies downgrade a government, they can trigger procyclical feedback loops: higher borrowing costs lead to fiscal deterioration, which justifies further downgrades. S&P’s April 2010 downgrade of Greece to junk status raised borrowing costs and made the May 2010 bailout effectively unavoidable.^[s]

The United States lost its last AAA sovereign rating in May 2025, when Moody’s cut it to Aa1. The agency projected U.S. federal debt reaching 134% of GDP by 2035 (up from 98% in 2024) with deficits approaching 9% of GDP.^[s] S&P had downgraded the U.S. in 2011; Fitch followed in 2023.^[s]

Geographic concentration raises bias concerns. All three major credit rating agencies are headquartered in the United States and regulated primarily by U.S. authorities. African nations argue that systematically pessimistic ratings cost the continent up to $74.5 billion through elevated borrowing costs, a claim that motivated the creation of the Africa Credit Rating Agency (AfCRA).^[s]

Behavioral Adaptation Without Structural Change

Research from Harvard Business School analyzing ratings between 2003 and 2015 found that credit rating agencies have become more defensively oriented since the crisis, reducing missed defaults by 57 to 72%. The study concludes that “as the likelihood of issuer default grows, the threat of reputational harm from discovered rating failures increasingly mitigates the rating agencies’ strategic behavior incentivized by the issuer-pay model.”^[s]

This finding suggests that reputational incentives can constrain the worst excesses of the issuer-pays model, at least in the aftermath of a crisis when public scrutiny is high. Whether that constraint holds during the next period of sustained credit expansion, when the pressure to win market share intensifies, remains the open question.

The credit rating agencies’ oligopoly has survived a century of market evolution, a global financial crisis, billions in legal settlements, and regulatory overhauls on two continents. The fundamental architecture, three private firms paid by issuers, embedded in regulation, operating with minimal competition, has not changed. Partnoy’s recommendation, that “investors should respond by reducing their reliance on credit ratings,” remains the most practical path forward.^[s] Whether they will is another matter.