What are sukuk?
What are sukuk? Islamic investment certificates explained without jargon
Sukuk are certificates that give you a share of ownership in a real asset or venture, and a share of the money that asset makes. Over USD 1 trillion of them are outstanding. They are often called Islamic bonds, but the mechanics are closer to owning a slice of a building than lending money to its owner.
Imagine your city needs a new airport terminal and asks ten thousand people to each buy a small piece of it. Every month the airlines pay rent to use the terminal, and that rent is split among the ten thousand owners. After seven years the airport authority buys all the pieces back at the price everyone agreed on day one. You have just understood an ijarah sukuk, the most common kind in the world.
- You own a share of something, you do not lend money. That one sentence drives every other difference from bonds.
- Your return is rent or profit from the asset, usually paid every three or six months.
- The asset and its use must be permissible under Islamic law: no interest-based lending, no alcohol, gambling, pork or weapons as the underlying business.
- The structure is reviewed by a Shariah board before issue, and in some countries by a central Shariah authority as well.
- The market is large and mostly institutional: USD 1.015 trillion outstanding at the end of 2025, with sovereigns issuing just over half.
The four parties in almost every sukuk
Strip away the lawyers' names and you find the same cast each time.
- The originator. The company or government that needs money and owns a suitable asset: a building, aircraft, toll road, power plant, or a pool of leased equipment.
- The issuer. Usually a special purpose vehicle (SPV), a company created only to hold the asset on behalf of certificate holders. Keeping the asset in the SPV is what separates it from the originator's other debts.
- The holders. Investors who buy the certificates. Each certificate is an equal, undivided share in what the SPV holds.
- The Shariah board. Scholars who approve the structure before issuance and, in good practice, check compliance while the sukuk is alive.
Step by step: how an ijarah sukuk works
- The originator sells an asset to the SPV. Say a government sells a government office complex to an SPV for USD 500 million.
- The SPV issues certificates to investors. It raises the USD 500 million by selling 500,000 certificates of USD 1,000 each. Each holder now owns one 500,000th of the complex.
- The originator leases the asset back. The government keeps using its offices and pays rent to the SPV, perhaps every six months.
- Rent is passed to holders. The SPV distributes the rent pro rata. That periodic distribution is the investor's return.
- At maturity the asset is repurchased. Under a purchase undertaking signed at the start, the government buys the complex back, typically at the original price, and the SPV returns capital to holders.
Other structures swap the lease for a trade, a partnership or an agency agreement. The common thread is that returns come from an asset or activity, not from a loan. See the main types of sukuk for how each one works.
Why the return looks like a coupon but is not one
Here is the part that confuses people. A sukuk's periodic distribution is often expressed as a percentage, for example 5.2% a year, and it is frequently benchmarked to an interbank rate so that investors can compare it with everything else they hold. On a Bloomberg screen it looks identical to a bond coupon.
Underneath, the 5.2% is the rent the lessee agreed to pay, divided by the price holders paid. If the rent is paid, holders receive it. If the asset is destroyed and not insured, there is no rent to pass on. A bond issuer owes interest no matter what happened to any building. That difference in where the money comes from is the difference scholars care about.
What the asset has to be
AAOIFI and the Islamic Financial Services Board agree on the core requirement: the underlying must be real. Tangible assets, usufructs and services qualify. Pure financial receivables (money owed) do not qualify as the backing for a tradable sukuk, because trading a debt at anything other than face value is treated as interest.
That rule has consequences you can see in the market:
- Governments issue sukuk against office buildings, airports and land, not against future tax revenue.
- Airlines issue against aircraft.
- Utilities issue against power plants.
- Banks often use a hybrid pool where tangible assets make up at least a majority, so the whole is tradable.
The asset's use must also be permissible. A warehouse is fine; a warehouse leased to a brewery is not. Monitoring that use over the life of the sukuk is one of the jobs a Shariah board, and in future possibly an AI agent, has to do. We explore that in the agentic sukuk lifecycle.
The market in numbers
The International Islamic Financial Market publishes the reference annual report. Its 15th edition, released 15 September 2026, covers 2025.
For what those numbers mean and where the growth comes from, see sukuk market size.
Who checks that a sukuk is sound
Three layers, and they do different jobs:
| Layer | Who | What they check |
|---|---|---|
| Shariah board | Scholars appointed by the issuer or arranger | That the structure, asset and documents comply with Islamic law before issuance; some boards also audit during the life |
| Regulator | Securities commission or central bank | Disclosure, investor protection, and in countries such as Malaysia a central Shariah Advisory Council whose rulings bind the market |
| Rating agency and auditor | Private firms | Credit risk of the originator, and whether the accounts are true |
None of those layers protects you from market risk. A Shariah-compliant sukuk from a weak issuer is still a risky investment.
Common misunderstandings
"Sukuk are risk-free because they are asset-backed." Most sukuk are asset-based, not asset-backed: the purchase undertaking means you are in practice relying on the originator's credit, not on selling the asset. Scholars have argued about exactly this since 2007. Read are sukuk halal for the debate.
"Sukuk cannot default." They can and have. Dana Gas stopped paying its USD 700 million sukuk in 2017, arguing the structure had become unlawful, and holders ended up with a restructured instrument in 2018 after litigation in London and Sharjah.
"Sukuk are only for Muslims." Nothing restricts who may buy. Large sukuk issues are routinely bought by conventional funds in London, New York and Singapore because they offer exposure to Gulf and Malaysian credit.
"Any Islamic bank product is a sukuk." Sukuk are tradable capital-market certificates. A fixed-term deposit at an Islamic bank is a different contract entirely.
Where to go next
If you came here because you are thinking of investing, the practical page is how to invest in sukuk. If you want the comparison that most people are really asking about, it is sukuk versus bonds. And if you want to know why this site has the odd word "agentic" in its name, start at the home page.
Questions people ask
What does the word sukuk mean?
Are sukuk the same as Islamic bonds?
Who issues sukuk?
How do I earn money from a sukuk?
Can I lose money in a sukuk?
Sources
Every figure and ruling on this page links to where it came from. Check them.
- Global Sukuk Outstanding Crosses the USD 1 Trillion Mark, IIFM Sukuk Report 2026, International Islamic Financial Market, 15 September 2026
- Shari'ah Standard No. 17: Investment Sukuk, AAOIFIDefinition and types of investment sukuk. Full text for members and subscribers.
- What are sukuk, and how do they work?, Association of Corporate Treasurers
- Sukuk (Islamic bond) at a glance, Securities and Exchange Commission, Nigeria
- Dana Gas reaches deal on $700m sukuk restructuring, Trade Arabia, May 2018
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