Forecasting Post-Consumer Textile Waste at EU National and NUTS2 Levels The transition toward a circular economy has prioritized the management of post-consumer textile waste (PCTW) within the European Union. However, fragmented data and inconsistent collection frameworks limit effective policy implementation, particularly ahead of the 2025 separate collection mandate under the Waste Framework Directive (WFD). This study aims to estimate PCTW generation and collection requirements across the EU-27 at both national and NUTS2 regional levels up to the year 2035. To address the inherent uncertainties in waste flow forecasting, a six-step hybrid framework was developed. The methodology integrates macroeconomics statistics (PRODCOM and COMEXT) for 194 finished textile products and employs apparent consumption reconciliation alongside Dynamic Probabilistic Material Flow Analysis (DPMFA).