Layered conditionality in the global timber trade: Regulatory interoperability and the EUDR–FLEGT interface in Indonesia and Ghana

Demand-side forest regulations increasingly shape production beyond consumer markets through legality licensing, due diligence, traceability mandates and private certification. Existing research suggests that these instruments can disadvantage smallholders but typically evaluates each in isolation. This article develops the concept of layered conditionality to analyze how separate regulatory requirements interact at the point of production, and how the rules linking them allocate residual compliance costs. Layering is additive when requirements duplicate information and fixed costs, substitutive when compliance with one framework formally satisfies an element of another, and catalytic when existing institutions lower the marginal cost of meeting later rules. Using a structured, focused comparison of Indonesia and Ghana, the only two tropical timber exporters with operational Forest Law Enforcement, Governance and Trade (FLEGT) licensing, we examine how the European Union Deforestation Regulation (EUDR) interfaces with domestic legality systems and private certification. Because the EUDR's core obligations are not yet in application, the analysis identifies mechanisms and risks rather than realized outcomes. EUDR recognition of FLEGT licenses is confined to legality verification; it does not extend to deforestation-free production, plot geolocation or operators' risk assessment. Whether layering facilitates participation or increases exclusion risks is likely to depend on system interoperability, the distribution of fixed information costs, and smallholders' position in domestic value chains. The article develops propositions for future empirical assessment and identifies bounded policy options within the existing legal framework ahead of EUDR application in December 2026.