The 14 AAOIFI-recognized Sukuk structures: A comprehensive overview

In-Depth Analysis

AAOIFI Shariah Standard No 17 recognizes 14 distinct types of Sukuk, each built upon a recognized Islamic commercial contract. Understanding the full range of structures is important not just for practitioners but for investors, as the underlying contract determines the risk profile, return characteristics, and tradability of the Sukuk. These 14 structures can be broadly categorized into three groups. The first group encompasses asset-based or sale-based Sukuk: Ijarah Sukuk (based on lease), Murabahah Sukuk (based on cost-plus sale), Salam Sukuk (based on forward sale), and Istisna Sukuk (based on manufacturing/construction contract). In these structures, returns are derived from a trading or leasing transaction and are generally predetermined. The second group comprises equity-based or partnership Sukuk: Musharakah Sukuk (based on joint venture) and Mudarabah Sukuk (based on profit-sharing partnership). These structures involve genuine profit-and-loss sharing, meaning returns are variable and dependent on the performance of the underlying venture. These structures are often considered more authentically Islamic because they embody the risk-sharing ethos, but they are also more complex and carry higher risk for investors. The third group includes agency-based Sukuk: Wakalah Sukuk (based on investment agency). In this structure, the Sukuk proceeds are managed by an investment agent (Wakeel) who invests in a diversified portfolio on behalf of the certificate holders. Wakalah Sukuk have become increasingly popular because they offer structural flexibility. Beyond these commonly used structures, AAOIFI also recognizes several agricultural-based Sukuk that are rarely used in practice: Muzara'ah (sharecropping), Musaqah (irrigation partnership), and Mugharasah (agricultural planting). The standard also recognizes Sukuk based on ownership of usufructs (both existing and future) and services. In practice, the market is dominated by a handful of structures. Ijarah Sukuk account for the largest share due to their simplicity, clear asset-backing, and unrestricted tradability. Wakalah Sukuk have seen rapid growth. Mudarabah and Musharakah Sukuk are used but less frequently due to the challenges around purchase undertaking restrictions. Murabahah Sukuk are used primarily for short-term liquidity management as they face tradability restrictions (being debt-based). Salam and Istisna Sukuk are rarely issued as standalone structures but may form part of hybrid portfolios.