What Is Sukuk (Kira Sertifikası)?

Sukuk, officially called kira sertifikası (lease certificate) in Turkey, is a financing instrument compliant with interest-free finance principles. Unlike a conventional debt instrument, its return depends not on interest but on the lease or profit-share income of a real asset the certificate is backed by. It gives the investor a share in that asset and a right to a portion of the income the asset produces. In short, sukuk is built on the logic of "a share in an asset's income" rather than "interest on money."

The difference between sukuk and a bond

Although sukuk is often called an "interest-free bond," its structure is essentially different from a bond or bill. The difference lies in what produces the income:

• Bond/bill: You lend to the issuer; in return you receive principal and a predetermined interest. What you hold is a pure debt claim, resting not on a specific asset but on the issuer's general ability to pay.
• Sukuk: It is backed by a specific asset (or pool of assets). The investor obtains a proportional share in that asset, and the income arises not from interest but from the lease income of that asset or the profit share of a commercial activity.

This distinction is not merely formal: interest-free finance rests on earning from a real economic activity based on an asset or trade, rather than from money itself. Sukuk is designed to put that principle into practice.

The issuance structure in Turkey: the Asset-Leasing Company (VKŞ)

In Turkey, sukuk is issued not directly by the originator but through a special-purpose vehicle set up for it: the Asset-Leasing Company (Varlık Kiralama Şirketi, VKŞ). In simplified form, it works as follows:

1. An originator (for example a bank or company) needs financing.
2. The originator transfers an asset to the VKŞ; backed by that asset, the VKŞ issues the lease certificates and raises funds from investors.
3. The income arising from the asset (typically rent) is passed regularly to the certificate holders through the VKŞ.
4. At maturity the asset is usually transferred back and the investors' principal is returned.

The VKŞ's core function is to hold the underlying asset in a separate legal entity on behalf of investors; this structure legally secures the certificate holders' link to the asset. Sukuk issuances are subject to the Capital Markets Board's regulations on lease certificates, and public disclosure is made via KAP.

Types of sukuk

Sukuk is divided into different types according to the contract structure it rests on. The most common in Turkey is lease (ijarah) sukuk: an asset is leased out and the investor receives a share of the rent income. Alongside it there are other structures defined in the regulations — for example sukuk based on managing a business (agency/management), on a partnership (partnership), or on a purchase-sale transaction (sale). (The full list of types and their definitions are set out in current legislation; for detail, consult the certificate's prospectus.)

The common thread across every type is the same: the return is not a fixed interest set in advance, but income tied to a real asset or commercial activity. In lease sukuk, because the income flows from the rent payments set in the contract, the investor usually sees a regular, predictable income profile over the term; but this is the passing-through of an asset's rent, not an interest coupon.

Sukuk can generally be bought and sold on the secondary market after issuance. This lets an investor transfer the certificate without waiting for maturity; on transfer, the share in the underlying asset and the right to its income pass to the buyer too. In issuances with limited trading volume, the price on an early exit can vary depending on finding a buyer and on market conditions.

Who uses it and what risks does it carry?

Sukuk is a core investment instrument for individual investors who wish to avoid interest and for participation (interest-free) funds; such funds hold lease certificates in their portfolios instead of interest-bearing instruments. Some free (hedge) funds that follow an interest-free strategy (participation free funds aimed at qualified investors) can also use sukuk. Being interest-free does not automatically make sukuk risk-free or return-guaranteed:

• The underlying asset's income may come in lower than expected.
• Payment difficulty of the issuer or originator can affect the certificate holder.
• The secondary-market price can fluctuate with the time to maturity and market conditions; on early sale, liquidity may be limited.

So, like any investment instrument, sukuk carries its own risks and involves no promise of gain. The religious/faith dimension of interest-free finance can be decisive for investors who choose sukuk; this choice is personal, and this page offers no steer — it only explains how the instrument works. If you wish to examine sukuk-heavy funds, you can look at the participation funds category.