Conventional lending charges interest (riba) on borrowed money, which Islamic finance prohibits outright. Shariah-compliant financing replaces the interest-bearing loan with structures built on trade, leasing, or partnership instead — the lender earns a return from a real economic activity (a sale, a lease, a shared venture) rather than from the time-value of money alone.
Core principles
- No riba (interest) — no fixed return is charged purely for the use of money over time.
- Risk-sharing — profit and loss are shared between the parties rather than guaranteed to the capital provider.
- Asset backing — financing is tied to a real, tangible transaction rather than a pure cash loan.
- No speculation (maysir) — structures avoid contracts whose outcome depends on chance rather than a genuine underlying transaction.
The main models
| Model | How it works |
|---|---|
| Murabaha | The financier buys the asset the customer wants, then resells it to the customer at a disclosed markup, payable in installments. The "profit" is a sale margin, not interest. |
| Musharakah | A joint-venture partnership where all parties contribute capital and share profit and loss according to pre-agreed ratios — see Musharakah and Musharakah Mutanaqisah for the diminishing-partnership variant used in home financing. |
| Ijarah | A lease structure: the financier owns the asset and leases it to the customer for rental payments, sometimes with an option to purchase at the end of the term. |
| Mudarabah | The financier provides capital and the customer provides labor/expertise; profits are split by an agreed ratio, while capital losses are borne by the financier absent misconduct — see Mudarabah. |
Murabaha is the most widely used of the four in practice, largely because its fixed-markup structure is simple to price and administer — which is also why it draws criticism from some scholars for looking, economically, close to an interest-bearing loan if not implemented carefully (genuine ownership transfer and asset risk have to actually occur, not just be documented).
Why it matters for crypto
The same principles apply when assessing DeFi lending and "earn" products: a protocol that pays a fixed return purely for depositing capital, with no underlying trade or shared risk, functions economically like riba regardless of the technology wrapping it. Structures that share genuine profit-and-loss risk, or that are built on an underlying trade or lease, are evaluated differently. See the DeFi lending and staking guides for how this is applied to specific crypto mechanisms.
Challenges
Islamic lending faces real practical hurdles: regulatory frameworks in many jurisdictions were built around conventional debt and don't map cleanly onto partnership or trade-based structures; public awareness of how these models actually work remains limited outside Islamic banking centers; and — as noted above — poorly-implemented Murabaha or Ijarah contracts can end up economically indistinguishable from interest-bearing loans, which is why the underlying transaction mechanics matter more than the label on the contract.