Rating Agency Conflict of Interest: The Issuer-Pays Problem

The issuer-pays model for credit ratings creates a fundamental conflict of interest: the companies whose bonds are being rated—the debt issuers—are the ones who pay the rating agencies for the analysis. This arrangement incentivizes grade inflation, where risky securities receive higher grades than their fundamentals warrant, because a lower grade might cost the issuer a rating deal or trigger refinancing penalties. The 2008 structured-finance crisis laid bare the magnitude of this bias.

How the Issuer-Pays Model Evolved

Before the 1970s, bond investors paid rating agencies (like Moody’s) for access to ratings, similar to how newspapers charge for subscriptions. The issuer-pays model emerged because investment banks wanted ratings to be cheap and available to all market participants; charging issuers directly—and passing the cost to bond buyers through lower prices—made ratings a free public good.

Rating agencies became licensed by the SEC as Nationally Recognized Statistical Rating Organizations (NRSROs). By the 1980s, the issuer-pays model was entrenched across Moody’s, S&P, and Fitch. In exchange for a fee (often a percentage of the bond issuance amount, sometimes a flat charge), the agency would analyze the debt and assign a grade.

This seemed benign at first: the rating agencies were theoretically independent, invested with professional reputations, and subject to SEC oversight. But the incentive structure hid a corrosive conflict.

The Core Conflict: Who Pays Whom

Imagine you are an investment bank packaging 1,000 mortgages into a mortgage-backed security (MBS). You want to sell tranches of this MBS to insurance companies, pension funds, and hedge funds. The easiest way to find buyers is to get the MBS rated AAA (the safest grade).

You approach Moody’s and propose paying them to rate the MBS. But here is the catch: if Moody’s analyzes the mortgages carefully and assigns a lower grade—say, A or BBB—your deal falls apart. Insurance companies will not buy; you lose fees; your investment bank loses revenue.

So Moody’s faces a choice: assign a rigorous grade (potentially losing this deal and others like it) or assign an inflated grade (keeping the deal and the fees, plus building a repeat business with your investment bank on future deals).

This is not conscious corruption; it is structural. If Moody’s consistently assigns lower grades than competitors, investment banks will stop hiring them. Moody’s and S&P compete for deals. The issuer, in effect, can shop for a favorable rating by threatening to hire a competitor.

Evidence from 2008 and Structured Finance

The 2008 mortgage crisis exposed the depth of the problem. Mortgage pools containing tens of thousands of subprime loans—borrowers with poor credit, minimal down payments, and stated incomes never verified—were routinely rated AAA. These securities later suffered default rates of 20% or more, far exceeding the default rates of bonds issued by mid-tier corporations that received BBB or A grades.

Academic research by Efraim Benmelech and Jennifer Dlugosz (2009) and others documented that mortgage securitizers with better relationships to rating agencies received higher ratings for comparable mortgage pools. In other words, business ties mattered: issuers who brought frequent business to Moody’s or S&P were rewarded with higher grades.

Email evidence released during Congressional hearings revealed internal skepticism at the rating agencies. Analysts questioned assumptions used to model default rates, yet their superiors, under pressure to keep fees flowing, approved AAA ratings anyway.

The SEC later fined Moody’s and S&P billions for the misratings, but the structural problem—who pays the rater—was never fundamentally altered.

Repeat Business and Relationship Capture

An insidious aspect of issuer-pays is repeat business. An investment bank that issues $10 billion in corporate bonds every year is a major customer for Moody’s or S&P. If the rating agency becomes known for harsh ratings, the investment bank will move its business to a kinder competitor.

Rating agencies also develop relationships with issuers over years. A bank’s CFO or treasurer meets regularly with the rating agency’s analysts. These relationships are cordial, sometimes personal. It is harder to assign a downgrade to someone you know and like.

This is relationship capture: the rater grows dependent on the issuer’s business and reluctant to displease them. The issuer, in turn, expects a degree of leniency in rating decisions, especially compared to competitors or changes in fundamentals.

Investor-Pays: An Alternative, Rarely Chosen

Some emerging-market rating agencies (like Agunica in Africa or Scope Ratings in Europe) use an investor-pays model: institutional investors subscribe to access ratings, and the issuer does not pay. This eliminates the issuer-pay conflict.

Investor-pays has not scaled globally because it is harder to monetize. Investors view ratings as a quasi-public good; they are reluctant to pay subscription fees when competitors offer free ratings. Investor-pays raters typically serve niches (ESG ratings, emerging-market debt) rather than competing with the big three (Moody’s, S&P, Fitch) on core corporate bonds.

Regulatory Responses and Their Limits

The SEC now requires rating agencies to:

• Disclose their methodologies and any changes to them.
• Avoid simultaneous advising and rating (a consulting conflict).
• Maintain internal rating-shopping controls (i.e., track if an issuer shopped ratings and rejected a lower grade).
• Publicly report on rating accuracy relative to subsequent default rates.

These rules reduce conflict, but they do not eliminate it. An issuer can still, in effect, choose a friendlier rater by threatening to go elsewhere. And new securitizations still carry ratings that prove optimistic in retrospect, suggesting the incentive problem persists.

The Liability Shield Problem

Rating agencies benefit from a First Amendment shield: their ratings are treated as opinions, not securities recommendations, and thus they have limited liability if ratings prove wrong. This means an issuer who files a bad rating cannot easily sue the rater for damages.

In theory, this shield encourages analysts to speak their minds without fear of litigation. In practice, it weakens accountability. An investor harmed by an inflated rating has little legal recourse against the rater, even if evidence shows the bias was systematic.

Congress and the SEC have periodically debated narrowing this liability shield, but rating agencies argue that greater legal exposure would make them more conservative and could reduce issuance of securities, harming capital markets.

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