Elevated energy prices, driven by geopolitical tensions pushing oil above $100 per barrel, alongside tariff effects on goods and resilient demand, form the primary catalyst for September 2026 PPI expectations. August's 5.4% YoY print, above the 5.3% consensus, already reflected these pipeline pressures, with forecasts pointing to a potential 0.6–0.9% monthly gain that could lift the annual rate toward 5.7–5.9% or higher. The wide probability distribution across brackets from 5.9%+ (34.5%) down to lower levels captures uncertainty over the magnitude of services and core goods contributions. The October 15 release will also inform Federal Reserve rate path expectations following the September hike, with Treasury yields and the dollar sensitive to any upside surprise relative to the 5.4% prior.