• S&P Global Ratings will base future US sovereign credit rating decisions on the economic fallout from new tariffs, maintaining its current AA+ rating for now.
  • The agency notes that while tariff revenue may offer some fiscal offset, the potential for weakened domestic demand and global growth remains a key concern.
  • Global financial markets have shown resilience to the trade tensions so far, but policy uncertainty is elevated and supply chain disruptions are already emerging.

The economic consequences of the latest round of US tariffs will be the primary determinant for future actions on the country’s sovereign credit rating, according to a S&P Global Ratings analyst. The agency is maintaining its AA+ rating on the US but is signaling that a change is contingent on whether the protectionist measures ultimately bolster or weaken the nation's financial stability and growth trajectory.

While revenue generated from the tariffs could provide a partial buffer against fiscal pressures, the analysis hinges on the net effect. The tariffs, which feature particularly high rates on imports from major emerging markets like Brazil and South Africa, risk raising costs for US consumers and manufacturers if exporters pass them along. This could dampen domestic demand, a significant risk factor S&P is closely monitoring.

Efforts to reach S&P Global for further comment on the timing of their assessment were not immediately successful. The agency’s stance underscores a wait-and-see approach, prioritizing hard economic data over political rhetoric. Market participants are watching for any signs that the tariffs are beginning to bite, potentially affecting investment and hiring plans across import-reliant sectors.

So far, global credit conditions have remained surprisingly resilient, and the initial market volatility has subsided from earlier highs. However, underlying uncertainty is well above historical norms. Real-time economic impacts are already visible; for instance, US imports of pig iron fell notably in June due to uncertainty over the tariff rates, demonstrating how quickly supply chains can be disrupted.

The broader context is a global trend toward what S&P has termed "conditional globalization," with the US engaging in ongoing negotiations with affected nations, including China, Canada, and Mexico. Some trading partners received lower tariffs after adjustments in August, but the overall environment remains fragmented. S&P forecasts that the new tariffs will contribute to weaker quarter-over-quarter GDP growth across most regions in the latter half of 2025, with a modest recovery not anticipated until 2026.

For the US sovereign rating, the path forward is clear: the numbers will do the talking. The agency has drawn a direct line from trade policy to its credit assessment, putting the onus on the actual economic outcomes to determine whether the current rating holds.