Sukuk and Islamic Finance Instruments for International Investors

The global Islamic finance industry has grown substantially over the past two decades, from a relatively niche sector serving primarily Gulf and Malaysian investors to a genuinely international market spanning sovereign, quasi-sovereign and corporate issuers across the Middle East, Asia, Africa and Europe. The total value of outstanding Islamic finance assets globally is estimated in the trillions of dollars as of 2026, with sukuk (Islamic bonds) representing a significant and fast-growing portion.

For internationally mobile investors — whether practising Muslims seeking Shariah-compliant portfolios or non-Muslim investors seeking diversification and access to high-growth Islamic economies — understanding sukuk and broader Islamic finance instruments has become increasingly important.

The Prohibition of Riba and Its Consequences

The foundational principle of Islamic finance is the prohibition of riba — typically translated as interest or usury, though the concept is broader than simple interest-charging. The Quran and Hadith explicitly prohibit the taking or giving of riba, which scholars interpret as any fixed predetermined return on a loan without participation in the underlying economic activity.

This prohibition has far-reaching practical consequences for finance. Conventional bonds — which represent a loan paying fixed interest — are not permissible under Shariah. Neither are conventional derivatives, insurance contracts with gambling-like characteristics, or investments in companies whose primary business involves alcohol, tobacco, pork, pornography, weapons, gambling or conventional banking.

Islamic finance addresses this by replacing the interest-based model with structures based on asset ownership, risk-sharing, trade, and leasing. The return to the investor is derived from a legitimate underlying economic activity rather than from lending money at interest.

What Are Sukuk?

Sukuk (plural; singular: sakk) are commonly described as "Islamic bonds", but this description is imprecise and potentially misleading. A conventional bond is a debt instrument: the investor lends money to the issuer and receives interest. A sukuk is a certificate of ownership or beneficial interest in an underlying asset or pool of assets, with returns generated from the economic activity of those assets rather than from interest.

In practice, the economic return profile of many sukuk resembles that of a conventional bond — periodic distributions and redemption at par — but the legal structure is fundamentally different: the investor holds a stake in (or has a contractual claim on the income of) real assets, rather than simply holding a creditor claim.

Several Shariah scholars and Islamic finance practitioners debate whether some forms of sukuk fully comply with Shariah principles. Investors seeking Shariah-compliant portfolios should seek sukuk reviewed and approved by a recognised Shariah supervisory board.

Key Sukuk Structures

Several structures are used to create Shariah-compliant fixed-income instruments:

Ijarah (leasing): the issuer sells an asset to a special purpose vehicle (SPV), which leases it back to the issuer. The investor owns a share of the SPV and receives periodic lease payments as their return. Ijarah sukuk are among the most common and widely accepted as Shariah-compliant because the return is genuinely derived from leasing a physical asset.

Murabaha (cost-plus sale): the SPV purchases an asset and sells it to the issuer at a marked-up price, payable in instalments. The investor's return is the mark-up. This structure is widely used for short-term financing.

Musharakah (partnership): investors and the issuer enter a joint venture, sharing profits and losses in agreed proportions. This is a more participatory structure but is less common for standard sukuk issuance because it introduces variable returns.

Mudarabah (profit-sharing): a form of partnership where one party provides capital and the other manages the investment. Profits are shared in a pre-agreed ratio; losses are borne by the capital provider (unless the manager was negligent). Used for equity-like sukuk structures.

Wakala (agency): the sukuk issuer acts as an investment agent, investing proceeds in a portfolio of Shariah-compliant assets on behalf of investors. Returns are based on the performance of the underlying portfolio.

Hybrid structures: many sukuk combine elements of multiple structures to achieve the desired risk-return profile.

Major Issuers: Sovereigns and Corporates

Sovereign sukuk issuers include:

• Saudi Arabia: one of the world's largest sukuk issuers, financing significant portions of Vision 2030 infrastructure investment through both domestic and international sukuk.
• Malaysia: the most developed sukuk market globally in terms of regulatory framework, secondary market liquidity and investor base. Kuala Lumpur is considered a global centre of Islamic finance.
• UAE and GCC states: the UAE, Qatar, Bahrain and Kuwait are significant issuers of sovereign and quasi-sovereign sukuk.
• Indonesia: one of the world's largest Muslim-majority countries and an active sukuk issuer.
• Turkey: issues sovereign sukuk (Lease Certificates) under its domestic regulatory framework.
• UK: the UK government was among the first Western sovereigns to issue a sukuk (in 2014), demonstrating the asset class's mainstream acceptance.
• Germany and Luxembourg have also issued or facilitated sukuk, reflecting the growing integration of Islamic finance into European capital markets.

Corporate sukuk are issued by companies across banking, real estate, utilities, aviation and other sectors, spanning global investment-grade issuers and smaller regional companies.

The Sukuk Market: Size, Liquidity and Access

The global sukuk market has grown substantially in recent years. Annual issuance globally has reached hundreds of billions of dollars in recent years, though the market remains smaller and less liquid than comparable conventional bond markets.

Key characteristics for investors:

• Currency: most international sukuk are denominated in US dollars; domestic markets (Malaysia, Saudi Arabia) also have significant local-currency issuance
• Maturity: most sukuk have maturities of three to ten years; ultra-long sukuk are rarer than in conventional markets
• Liquidity: secondary market liquidity has improved significantly but remains lower than for comparable conventional bonds; bid-ask spreads can be wider, particularly for smaller issuances
• Minimum size: direct sukuk investment typically requires minimum ticket sizes of $100,000–$200,000; fund-based access is available for smaller amounts

Why Non-Muslim Investors Consider Sukuk

Islamic finance instruments are not exclusively for Muslim investors. Several characteristics make sukuk attractive to internationally mobile non-Muslim investors:

Asset-backing: the requirement that sukuk be linked to real underlying assets provides a form of collateral or economic substance that pure unsecured debt lacks. In some structures, investors have a beneficial interest in physical assets.

Diversification: sukuk portfolios provide exposure to GCC and Asian economies and issuers not typically represented in conventional bond indices. This geographic diversification can improve risk-adjusted returns.

Ethical alignment: many of the screens applied in Islamic finance — excluding alcohol, tobacco, weapons, pornography — overlap with broad ESG or ethical investment criteria. Investors who apply similar screens to their own portfolios may find sukuk naturally compatible.

Competitive yields: sukuk typically trade at yields comparable to conventional bonds of similar credit quality and maturity, meaning investors do not sacrifice returns for compliance.

Islamic Equity and Fund Structures

Beyond sukuk, Islamic finance offers other instruments:

Shariah-compliant equities: stocks of companies whose business activities and financial ratios (typically: total debt below 33% of market capitalisation; impermissible income below 5% of total revenue) pass Shariah screening. Major index providers offer Shariah-screened versions of their equity indices.

Islamic funds: investment funds that invest exclusively in Shariah-compliant instruments, overseen by a Shariah supervisory board. These span equity, sukuk, money market and balanced strategies.

Takaful (Islamic insurance): cooperative insurance structures that replace conventional insurance with a mutual risk-sharing model. Relevant for investors seeking insurance products that comply with Shariah principles.

Commodity murabaha: a short-term, Shariah-compliant cash management structure used by Islamic banks and their clients as an alternative to interest-bearing deposits.

Shariah Governance and the Role of Scholars

The legitimacy of Islamic finance instruments depends on the approval of Shariah scholars. Major Islamic finance institutions maintain Shariah supervisory boards composed of recognised scholars who review and certify the compliance of each product. Fatawa (legal opinions) from respected scholars are published to document the compliance basis.

As the market has grown, some controversy has arisen about whether certain sukuk structures — particularly those closely replicating conventional bond economics — genuinely comply with the spirit of Shariah or merely satisfy a technical compliance requirement. Investors with strong Shariah compliance requirements should take specific scholarly advice on the instruments they hold.

Tax and Regulatory Treatment

Tax treatment of sukuk varies by jurisdiction. In the UK, HMRC has issued guidance providing equivalent tax treatment for sukuk and conventional bonds (so that, for example, alternative finance return payments under an ijarah structure are treated like interest for tax purposes). Similar equivalence legislation exists in several European and Asian jurisdictions.

For internationally mobile investors, the cross-border tax treatment of sukuk income requires careful advice, as rules vary materially between countries.

How Global Investments Can Help

Global Investments serves clients across the Middle East, Asia, Europe and beyond, including both Muslim clients seeking Shariah-compliant portfolios and international investors seeking exposure to Islamic finance markets. Our advisers have experience structuring sukuk allocations, identifying appropriate funds and wrappers, and navigating the cross-border tax implications for internationally mobile clients.

Whether you are building a fully Shariah-compliant portfolio or simply seeking to diversify into Islamic finance as part of a broader allocation, we can provide informed, practical guidance. Contact us for an initial discussion.

Capital is at risk. The value of investments and any income from them can fall as well as rise, and you may receive back less than you invest. Past performance is not a guide to future results. This guide is for information only and does not constitute regulated financial advice. Tax treatment depends on individual circumstances and may change. Seek independent regulated financial advice before making investment decisions.