---
title: "Fitch / Moody's / S&P Japan structured-finance criteria — global agencies vs JCR / R&I"
aliases:
  - "Global rating agency Japan structured finance criteria"
  - "Fitch Japan structured finance"
  - "Moody's Japan ABS criteria"
  - "S&P Japan securitization criteria"
  - "Global vs domestic agency split rating Japan"
  - "Sovereign rating cap Japan ABS"
  - "structured-finance/fitch-moody-sp-japan-criteria"
  - "JapanFG/moodys-japan"
  - "JapanFG/sp-global-ratings-japan"
domain: structured-finance
created: 2026-05-25
last_updated: 2026-07-29
last_tended: 2026-07-29
review_by: 2027-01-29
confidence: likely
tags: [structured-finance, rating-agency, fitch, moodys, sp, jcr, ri, japan, criteria]
status: active
sources:
  - "https://www.fsa.go.jp/menkyo/menkyoj/shinyoukakuduke.pdf"
  - "https://www.spglobal.com/ratings/en/regulatory/ratings-criteria/-/articles/criteria/structured-finance/filter/general"
  - "https://www.jcr.co.jp/en/rrinfo/meth_sf/"
  - "https://jcr.co.jp/en/ratinglist/sf_sf/"
---

# Fitch / Moody's / S&P Japan structured-finance criteria — global agencies vs JCR / R&I

## TL;DR

A reliable agency comparison starts with the same named transaction, tranche, rating date and criteria version. The prior blanket claims—dual ratings as a rule, a 1–3-notch split, fixed recovery gaps, and a sovereign ceiling that prevents Japanese RMBS from receiving AAA—are not supported. S&P's public criteria explain that a sovereign rating is not an absolute ceiling. Moody's and Fitch conclusions must likewise come from their applicable criteria and a named rating action, not from an invented “global-agency” composite.

## Wiki route

This entry sits under [[structured-finance/INDEX|structured-finance index]] as the **agency-criteria comparison** node. Read against [[structured-finance/credit-rating-methodology-jcr-r-and-i|JCR / R&I methodology]] for the domestic-agency view, [[structured-finance/japan-abs-market-overview|Japan ABS market overview]] for the investor demand side, and [[structured-finance/spv-tk-gk-vehicle-japan-tax|TK / GK SPV vehicle]] for the legal-entity layer that the rating sits on. Related cross-border angle: [[real-estate-finance/INDEX|real-estate-finance index]] (RMBS / J-REIT debt) and [[finance/INDEX|finance index]] for the broader credit-spread context.

## 1. The three global agencies — Japan structured-finance footprint

[FSA's current register](https://www.fsa.go.jp/menkyo/menkyoj/shinyoukakuduke.pdf) supports only the Japan-registration boundary in the following table.

| Agency group | What can be verified here | What requires separate evidence |
|---|---|---|---|
| Moody's Japan legal entity | Current FSA register entry | Asset-class footprint, mandate and rating require a named public rating action |
| S&P Japan legal entity | Current FSA register entry | Same; apply the criteria cited by the named action |
| Fitch Japan legal entity | Current FSA register entry | Same; do not infer activity from group branding |

For each legal entity, recheck the current status and exact entry in the FSA register. Group branding does not establish Japan registration or activity.

## 2. Sovereign-rating cap — the structural ceiling

[S&P's official structured-finance criteria library](https://www.spglobal.com/ratings/en/regulatory/ratings-criteria/-/articles/criteria/structured-finance/filter/general) supports the following evidence rules and expressly rejects treating the sovereign rating as an absolute ceiling.

| Question | Evidence rule |
|---|---|
| Can a structured-finance rating exceed the sovereign? | Apply the named agency's current “ratings above the sovereign” and structured-finance criteria; do not impose a blanket cap |
| What is Japan's sovereign rating? | Use the agency's dated sovereign rating action, not a timeless value |
| What constrains a named tranche? | Cite the transaction report's sovereign, transfer-and-convertibility, counterparty and asset analysis |
| Is there a split rating? | Compare the same tranche on the same date; record each agency's own scale |
| What causes a gap? | Use the agencies' published transaction rationales; do not infer a fixed number of notches |

## 3. Differences in modelling assumptions

### 3a. Default frequency / transition matrix

Default-frequency data, calibration geography and transition assumptions vary by agency, asset class and criteria version. Record them only when the applicable criteria or named transaction report publishes them; “cultural payment discipline” is not a methodology input supported here.

### 3b. Recovery assumption

[JCR's methodology library](https://www.jcr.co.jp/en/rrinfo/meth_sf/) and the applicable global agency criteria support only a document-by-document comparison in the following table.

| Field | JCR or R&I evidence | S&P, Moody's or Fitch evidence |
|---|---|---|---|
| Asset and pool | Named criteria and transaction report | Same transaction and asset definition |
| Recovery rate / severity | Published assumption, haircut and basis | Published assumption, haircut and basis |
| Timing | Published recovery lag and scenario | Published recovery lag and scenario |
| Geography | Disclosed segmentation and sample | Disclosed segmentation and sample |
| Comparison | Calculate only after aligning definitions | No generic “domestic vs global” percentage band |

Do not characterize any recovery difference as the largest driver of a split rating unless the named agencies' transaction rationales say so.

### 3c. Cash-flow stress

Interest-rate, prepayment, counterparty and servicing stresses must be compared from the cited criteria versions. This page does not rank one agency as categorically more or less aggressive.

## 4. Transition matrix differences — empirical observation

No transition-rate comparison is retained without matched cohorts, observation windows, withdrawals and rating scales. A sponsor name must not be treated as support unless the transaction report expressly describes and gives credit to a legally enforceable obligation.

## 5. Recent JCR / S&P split-rating cases — illustrative pattern

[JCR's public rating list](https://jcr.co.jp/en/ratinglist/sf_sf/) and the other agency's named rating action are the required inputs for the following comparison.

| Comparison item | Required public evidence |
|---|---|
| Transaction | Legal issuer, series and collateral |
| Tranche | Same class and payment priority |
| Rating | Each agency's dated symbol, outlook / watch and action |
| Criteria | Version cited by each action |
| Structural assumptions | Enhancement, counterparty and cash-flow stresses stated in each report |
| Spread | Dated primary or secondary market observation; never infer basis points from rating symbols |

## 6. Why dual-rating still happens

An issuer may engage more than one agency, but the reason is transaction-specific. Investor mandates, regulatory recognition and collateral eligibility must be checked under the actual investor's jurisdiction and rules; this page does not assume that a “global” rating is required or sufficient.

## 7. Counterpoints

- A letter-rating comparison without the same tranche and date is not evidence of leniency or conservatism.
- A methodology revision can affect ratings, but any impact must be cited from the agency's review announcement.
- Staffing, turnaround and investor perceptions are omitted unless supported by a public, specific source.

## 8. Open questions

- Which criteria version and transaction report governs the named tranche?
- Are rating symbols, dates, currencies and payment priorities aligned?
- Does a stated regulatory or investor use follow from a cited rule in the relevant jurisdiction?

## Related

- [[structured-finance/INDEX|structured-finance index]]
- [[structured-finance/credit-rating-methodology-jcr-r-and-i|JCR / R&I methodology]]
- [[structured-finance/japan-abs-market-overview|Japan ABS market overview]]
- [[structured-finance/spv-tk-gk-vehicle-japan-tax|TK / GK SPV vehicle]]
- [[real-estate-finance/INDEX|real-estate-finance index]]
- [[finance/INDEX|finance index]]
- [[derivatives/japan-cds-market-overview|Japan CDS market overview]]
- [[megabanks/mufg|MUFG]] · [[megabanks/smfg|SMFG]] · [[megabanks/mizuho-fg|Mizuho FG]]
- [[financial-regulators/japan-exchange-group|JPX]] · [[cooperative-banks/norinchukin|Norinchukin]]

## Sources

- [FSA, registered credit rating agencies](https://www.fsa.go.jp/menkyo/menkyoj/shinyoukakuduke.pdf).
- [S&P Global Ratings, structured-finance criteria library](https://www.spglobal.com/ratings/en/regulatory/ratings-criteria/-/articles/criteria/structured-finance/filter/general).
- [JCR, structured-finance methodology library](https://www.jcr.co.jp/en/rrinfo/meth_sf/).
- [JCR, structured-finance rating list](https://jcr.co.jp/en/ratinglist/sf_sf/).

---

> [!info] 校核状态
> confidence: **likely**. This page intentionally retains no unnamed split-rating case, fixed recovery range, spread implication or sovereign ceiling. Reproduce comparisons from named public rating actions.