How Rating Agency Methodologies Differ

While all SEBI-registered agencies apply a broadly similar analytical framework, genuine, documented differences exist in how individual agencies weight specific sub-factors, structure their sector criteria, and calibrate rating thresholds — differences visible directly in each agency's published methodology documents.

The Shared Foundation

As covered extensively in the methodology pillar of this content series, the broad architecture of Indian credit rating methodology — business risk, financial risk, management and governance, liquidity — is substantially consistent across agencies, reflecting both a shared regulatory environment and, to some extent, convergent industry practice developed over decades of the Indian rating industry's operation. This shared foundation is precisely why a company's fundamental preparation for a rating exercise looks broadly similar regardless of which agency is engaged.

Where Published Methodologies Genuinely Diverge

•      The specific weighting given to different sub-factors within a sector methodology — for instance, how heavily customer concentration is weighted relative to leverage for a given industry

•      The specific financial ratio thresholds used as reference points for different rating categories, which can vary somewhat between agencies even for the same broad sector

•      The treatment of certain qualitative factors, such as promoter support or group linkages, where agencies can apply somewhat different frameworks for assessing the strength and reliability of such support

•      Sector coverage depth and the granularity of sector-specific criteria — some agencies publish highly detailed, sector-specific criteria for niche industries where others apply a more general, broader-category framework

Why These Differences Exist and Persist

These differences are not evidence of inconsistency or unreliability in the broader rating system — they reflect the fact that credit risk assessment, while grounded in shared financial and business principles, ultimately involves genuine analytical judgement, and different agencies, having built their own institutional experience and track record over years of rating decisions, have developed somewhat different, internally consistent views on how best to weight and calibrate specific factors. This is broadly analogous to how different, equally competent professional firms in other analytical fields can arrive at somewhat different frameworks for assessing the same underlying phenomenon, without either being simply 'wrong.'

How to Access and Use These Methodology Documents Directly

Every SEBI-registered agency publishes its detailed, sector-specific methodology documents on its own website, generally free of charge and without requiring any formal engagement — this is a genuinely useful, underused resource for companies preparing for a rating exercise. Reading the specific methodology document relevant to a company's own sector, from more than one agency, before engaging any of them provides a considerably more informed basis for both the agency selection decision and the company's own internal preparation than relying on general summaries or informal market reputation alone.

Practical Implications for Companies With Multiple Ratings

For companies with ratings from more than one agency, understanding these methodology differences is particularly useful for interpreting cases where the two ratings are not perfectly identical — a topic covered in dedicated depth in the following article in this pillar — since a modest divergence between two ratings is often directly traceable to a specific, identifiable methodology difference, such as how heavily one agency weights a particular sensitivity relative to the other, rather than reflecting any error or inconsistency on either agency's part.

Talk to FinMen Advisors — for help preparing for a rating exercise, write to marketing@finmen.in or call +91 77387 14680.

Disclaimer: This article is intended for general informational and educational purposes only and does not constitute financial, credit, investment, or legal advice. Credit ratings are assigned solely by SEBI-registered Credit Rating Agencies (such as CRISIL, ICRA, CARE Ratings, India Ratings, Brickwork, Acuite, and Infomerics) based on their own methodologies, policies, and the information available to them at the time of assessment. FinMen Advisors provides preparatory and advisory support to companies undergoing a rating exercise and does not issue, influence, or guarantee any rating outcome. Readers should exercise independent judgement and consult qualified professionals before making business or financial decisions.