Islamic finance is a financial system founded on Muslim ethics. It prohibits riba (interest), gharar (excessive uncertainty) and maysir (speculation), requires transactions to be backed by real assets, and gives precedence to the sharing of profits and losses. In practice, it steers the investor towards tangible assets — screened shares, property, gold, compliant ETFs — rather than towards a risk-free income stream.
Behind the expression “Islamic finance” lies a simple idea: money must not produce money through the mere passage of time. Value must arise from a real activity, from a shared risk, from work. From that principle flow all the concrete rules — the prohibition of interest, the exclusion of certain sectors, the requirement of a tangible asset behind every transaction. This article sets out the essential definitions and shows how they apply to a private investor, in Switzerland.
What is Islamic finance?
Islamic finance is the whole body of financial practices that comply with the principles of Muslim ethics. It is not a particular product or a particular institution, but a framework of rules that applies to savings, investment, financing and insurance. Its purpose is not only to avoid what is forbidden, but to tie finance back to the real economy: every gain must correspond to a risk taken and to value created.
Far from marginal, it now represents a global sector worth several trillion dollars, with its own stock market indices, its funds, its banks and its international standards. For the private investor, it comes down very concretely to one question: is my money working in a compliant way?
The core principles
Five principles structure the whole. To understand them is to understand almost every concrete decision that follows from them.
1. The prohibition of riba (interest)
This is the best-known principle. Riba means any interest or guaranteed surplus on capital lent, whatever the rate. It is prohibited because it allows a gain without risk and without any part in a productive activity. In concrete terms, that rules out conventional bonds, interest-bearing accounts and interest-based credit. We devote a full guide to it: how to invest without riba.
2. The prohibition of gharar (excessive uncertainty)
Gharar means the hazard, the ambiguity or the excessive uncertainty in a contract: a poorly defined object, an unknown price, an uncertain delivery. Islamic finance prohibits it to prevent one party from enriching itself at the expense of the other through sheer asymmetry of information. It is this principle that makes many purely speculative derivatives problematic.
3. The prohibition of maysir (speculation)
Maysir is gambling, and by extension any speculation in which one party's gain is mechanically the other's loss, with no value created. Betting, gaming, or dealing in instruments whose outcome is a matter of pure chance falls into this category. Investment, by contrast, remains licit because it rests on entrepreneurial risk and a real economic activity — which is not to be confused with a wager.
4. Backing by a real asset
Every transaction must rest on a tangible good or a real activity. Debt is not exchanged for debt: one invests in a company, in a property, in a commodity. That is what distinguishes an economy of production from an economy of pure financial circulation.
5. The sharing of profits and losses
Rather than a guaranteed return, Islamic finance values the fair sharing of risk. Whoever provides the capital takes part in the success of the project as much as in its failure. It is the foundation of structures such as mudaraba (a capital-and-labour partnership) or musharaka (a joint venture).
To these five principles is added the exclusion of illicit sectors: alcohol, gambling, weapons, pornography, the pork industry, or companies deriving the bulk of their income from non-compliant activities. Islamic finance is therefore not only a matter of financial mechanics, but also of choices about what one finances.
The key concepts to know
Three terms come up constantly. Here they are, clearly defined.
- Riba — interest or usury: any guaranteed surplus on a loan or an exchange, with no real consideration in return.
- Gharar — excessive uncertainty or ambiguity in a contract, a source of injustice between the parties.
- Maysir — gambling and pure speculation, where the gain comes from chance rather than from effort and real risk.
You will also come across zakat (the obligatory alms, calculated on wealth) and sukuk (often presented as the “Islamic bond”: a security backed by a real asset that distributes income linked to that asset, and not an interest payment).
How is compliance checked?
For an investment in shares, compliance is not declared: it is verified, through a two-stage method recognised internationally.
First a sector screen. The company's main activity must not fall within a prohibited sector. Then financial ratios, according to the standards of the AAOIFI (the standard-setting body of Islamic finance): interest-bearing debt below 33 % of market capitalisation, interest-bearing cash and investments below 33 %, and income from non-compliant activities below 5 % — that share having to be “purified” through a donation.
These standards rest on a body of reference scholarship, carried in particular by authorities such as Mufti Taqi Usmani and Sheikh Yusuf DeLorenzo. You can test the compliance of your investments free of charge with our compliance check.
ALG Club does not have a formal sharia supervisory board and does not claim to have one. Our approach rests on the recognised standards (AAOIFI) and on the body of reference scholarship, applied with rigour and transparency. For a decision that engages your religious practice, the opinion of a qualified scholar remains sovereign.
Learning to apply these principles?
The ALG Club programme shows you, concretely, how to align investments with these principles — within the Swiss framework. A method passed on step by step, which you then apply yourself.
Discover the programmeIslamic finance in practice
For a private investor, applying these principles means redirecting capital towards compliant assets. The main families are:
- Screened shares — real companies, put through the double sector and financial screen.
- Halal ETFs — index funds with screening built in, for straightforward diversification.
- Gold and property — tangible assets backed by the real world. Gold is, however, a ribawi good: its exchange must be immediate and possession real.
- Sukuk — the compliant alternative to the bond, backed by an asset.
- Compliant pension planning — including a halal pillar 3a, by selecting compatible vehicles.
Islamic finance in Switzerland
Applying these principles in Switzerland means dealing with a precise framework: the Swiss franc, cantonal taxation, pillar 3a and the platforms accessible from Switzerland. Most Islamic finance resources address other markets (the Gulf, the United Kingdom, Malaysia) and ignore these particularities. That is precisely where a programme rooted in Swiss reality takes on its full meaning — to turn principles into concrete decisions, which you take yourself.
This content is provided for educational purposes and does not constitute a fatwa: as questions of compliance involve differences between schools of jurisprudence, it is for each person to refer to a competent religious authority for their own situation. Nor does it constitute a recommendation to buy or sell.