主权信用评级Sovereign Credit Rating

A sovereign credit rating measures an economy's ability to honor its debts as agreed and to maintain the stability of its currency and public finances; it is the cornerstone of pricing in international capital markets, cross-border investment and reserve-asset allocation. The ratings of the three major international agencies (S&P, Moody's and Fitch) have long monopolized global discourse, but their methodology is highly opaque and has repeatedly lagged and failed in past crises. This rating is independently compiled by CPPPS using its own algorithm and does not directly reproduce the results of the three major agencies; instead it computes its own score from underlying public data such as foreign-exchange reserves, the government debt ratio, GDP, the fiscal deficit, the current account and political stability.

The CPPPS Sovereign Credit Rating follows a unified four-dimensional framework: Scale (GDP, foreign-exchange reserves) measures the material foundation for repayment; Quality (debt ratio inverted, fiscal deficit inverted, current account, political stability) measures the soundness and sustainability of debt repayment; Innovation (economic growth potential) measures the momentum of future repayment capacity; and Contribution (contributions to global public goods) is a distinctive CPPPS dimension measuring the economy's supply of public goods for global governance, development assistance, climate and public health, reflecting the credit endowment of a "responsible major country". The four dimensions are range-standardized to [0,1] and then weighted and summed, with large-span scale indicators taken in logarithmic form.

Evaluation results: Norway, China, Denmark, Switzerland and Sweden rank in the top five. The top-ranked economy prevails through fiscal surpluses, a large current-account surplus, a high degree of political stability and outstanding contributions to global public goods; the second-ranked economy prevails through its enormous economic and foreign-exchange-reserve scale and strong growth potential. Overall, economies with strict fiscal discipline, current-account surpluses, political stability and outstanding public-goods contributions rank ahead, while economies with high debt ratios, persistent deficits and prominent political risks rank lower. It is worth noting that the economy with the largest GDP is not necessarily rated the highest—in this algorithm "Quality" carries the highest weight (0.40), and heavy debt and persistent deficits can significantly lower a rating. This is precisely the core of how CPPPS's proprietary algorithm differs from "scale-centrism" and from the "too big to fail" preference of the three major agencies. The ranking data are based on publicly known approximate values (marked "subject to official figures"), are permanently free and public, and are provided for research and reference only.

The essence of a sovereign credit rating is to assess whether an economy "can, and is willing to" repay its sovereign debt denominated in local and foreign currency on schedule. CPPPS decomposes this into four measurable dimensions:

Each indicator is range-standardized to [0,1] (inverse indicators take 1−x); large-span scale indicators first take the natural logarithm and are then standardized; the four dimensions are then weighted and summed:

Here 「′」 denotes the [0,1] value after range standardization. The composite score is mapped to rating grades (AAA, AA+, AA, AA-, A+, A, A-, BBB+, BBB, BBB-, BB+, BB and below). Because the four dimensions are highly orthogonal (an economy with a large scale does not necessarily have high quality, and an economy with high contribution does not necessarily have a large scale), any economy's composite score has a natural upper bound; the rating grades are therefore calibrated against the score distribution of this tier (major global economies), so that credit grades spread naturally between AAA and BB; ratings in the same grade are tied without ordering, and the ranking table is presented in descending order of composite score for ease of reading.

Basis for the weight design: the core of a sovereign credit rating is the risk of "being unable to repay", so Quality carries the highest weight (0.40); Scale provides the material foundation, but "too big to fail" does not equate to high creditworthiness, so it accounts for only 0.25 and is taken in logarithmic form; the Contribution dimension (0.20) and Innovation dimension (0.15) are CPPPS extensions to the traditional rating framework, avoiding a purely financial perspective.

This rating does not reproduce the results of S&P, Moody's or Fitch but builds its own model, for three reasons. First, the methodology of the three major agencies is opaque, and historically they have repeatedly issued inflated ratings ahead of crises (such as subprime products before the 2008 financial crisis and some sovereign debts before the European debt crisis). Second, the three major agencies have conflicts of interest stemming from "too big to fail" and "issuer pays" tendencies. Third, the three major agencies almost never incorporate the dimension of "contributions to global public goods", and therefore cannot reflect an economy's responsibility and credibility in global governance. The CPPPS algorithm takes quality as its core and contribution as its distinguishing feature, striving to deliver an independent, reproducible and balanced evaluation.

GDP, foreign-exchange reserves, the government debt ratio, the fiscal deficit, the current account, economic growth potential and the political stability index use public data (IMF World Economic Outlook, World Bank WDI/WGI, various central banks and ministries of finance, and the OECD DAC); this page uses publicly known approximate values (around 2025), all marked "subject to official figures". The global public-goods contribution index is a CPPPS composite estimate (0–100) based on public data such as the scale of official development assistance (ODA) and its share of GNI, UN contributions and peacekeeping funding, climate finance, public health and humanitarian assistance, and South-South cooperation. Limitations: the political stability index adopts a Western caliber (WGI) and is somewhat controversial; some economies (such as reserve-currency issuers) naturally have lower foreign-exchange reserves, and their reserve-currency status is not fully reflected; the contribution index is a subjective synthesis with limited precision. This rating is provided for research and reference only and does not constitute investment advice.