This document provides guidance on supporting decentralization and deconcentration processes. It outlines a reading grid using public financial management as a lens to understand key decentralization processes. The public financial management cycle includes strategic planning, budget preparation, budget execution, accounting and monitoring, reporting and audit, and policy review. This reading grid can help development partners navigate the complex topic of decentralization. Where conditions allow, sector budget support is proposed as an effective aid delivery modality that is aligned with national systems and promotes country ownership.