What Makes an Investment Halal? Riba, Gharar and Maysir Explained Simply

By Rahul Habibur | 22 June 2026 | Halal Investing | approx. 5 min read

In short: An investment is halal when it avoids three things — Riba (interest), Gharar (excessive uncertainty) and Maysir (gambling/speculation) — and puts money into real, permissible businesses. Once you understand these three terms, you can judge any investment for yourself.

If you’re a Muslim looking to start investing, you immediately run into a question that blocks everything: “Is this even halal?” In our survey of 49 Muslims across the DACH region, this was the single biggest hurdle — bigger than not having enough money. The good news: you don’t need a degree in Islamic jurisprudence. You need three terms. We’ll explain them here so that afterwards you can assess any investment yourself.

What does “halal” even mean when it comes to money?

Halal simply means: permitted under the principles of Islam, that is, according to the Quran and the Sunnah. When it comes to money, this is never just about a prohibition — there’s a logic behind it: wealth should arise through real economic contribution — through trade, work, entrepreneurship, the sharing of risk — and not through tricks that make one person rich at another’s expense.

That’s exactly why, at the core, there are only three big “no”s. Understand these three, and you understand 90 percent of halal investing.

1. Riba — interest

Riba is Arabic for “increase” or “growth”. What’s meant is any guaranteed surcharge that someone collects purely for lending money — regardless of the amount. In plain English, this is interest. In earlier times, Christianity and Judaism also called it “usury” and forbade it; only the modern financial world renamed it “interest” and so stripped it of its moral undertone.

Why is interest forbidden? Because it redistributes wealth upwards: whoever already has capital earns without working and without risk; whoever has little ends up paying. The Quran is unusually clear here (2:275): “Allah has permitted trade and forbidden interest.” Trade — that is, value creation with risk — yes. Guaranteed interest without risk — no.

What this means in practice: Conventional bonds are not halal, because their entire return comes from interest. A normal savings account that pays interest isn’t either. And conventional banks, which make their living from the interest business, mostly drop out as investments.

The permitted alternative: Instead of lending money, you take a stake. You become a co-owner of real companies (shares), or you invest through Sukuk — these are investment-like instruments that, instead of interest, securitise a share in real assets and their returns.

2. Gharar — excessive uncertainty

Gharar means avoidable, excessive uncertainty or lack of transparency in a transaction — that is, when you don’t really know what you’re buying, what it costs, or whether the thing you’re buying even exists. Islam requires clarity: both sides should know what they’re getting into.

A little uncertainty is part of any transaction (no investment is guaranteed) — that’s permitted. What’s forbidden is the stark, avoidable kind of uncertainty. Classic examples are highly complex financial derivatives that nobody can see through anymore, or selling things you don’t even own.

What this means in practice: Stay away from products you don’t understand. If a provider can’t clearly tell you what you’re actually investing in, that’s a warning sign — both financially and Islamically.

The permitted alternative: Investments whose substance you can name. A share is a stake in a real company. A broadly diversified equity fund is a basket of such stakes. That’s transparent and easy to follow.

3. Maysir — gambling

Maysir is gambling: staking money in the hope of a win that is pure chance, where one person wins exactly what the other loses. No value is created — wealth simply changes hands through a bet.

The difference from investing matters: when you invest, you take part in real value creation and carry a risk for it. With Maysir, you bet on an outcome. This is exactly where short-term punting becomes problematic — for instance frantic day trading or chasing the “next hot coin”. The numbers bear this out: roughly 9 out of 10 day traders lose money in their first year.

What this means in practice: Speculation that is more bet than stake is considered not halal — and is usually a losing proposition financially too.

The permitted alternative: Patient, long-term investing with a plan. Wealth builds over years through participation in good companies, not overnight through a bet.

How do you actually recognise a halal investment?

So that nobody has to check hundreds of companies one by one, scholars have developed clear screening rules — the best known being the AAOIFI standard (that’s the international body that sets the recognised rules for Islamic finance). Simplified, the screening runs in two steps:

Step 1 — What does the company do? Companies whose core business is haram drop out: banks (interest business), alcohol, tobacco, gambling, defence, pornography. If a company only earns a small side share (rule of thumb: under 5 percent of revenue) from impermissible sources, it can still be acceptable.

Step 2 — How is the company financed? Financial ratios are examined, above all: interest-bearing debt should not exceed roughly one third of the company’s value. A company that is itself up to its neck in interest-bearing loans is not clean.

The clever part: you don’t have to do this screening yourself. There are ready-made, screened products — for example a global equity index in its “Islamic” variant, filtered precisely according to these criteria.

DACH implementation: Where you invest halal 🇨🇭🇩🇪🇦🇹

🇩🇪 Germany: You can invest in the screened Islamic global equity index (iShares MSCI World Islamic, “ISWD” for short) as a savings plan through Trade Republic (free) or Scalable Capital. For an account and halal saving there is KT Bank in Frankfurt — the only Islamic bank with a full licence in the German-speaking region. Just don’t activate the interest-bearing account at Trade Republic.

🇨🇭 Switzerland: For a regular brokerage account, Swissquote or comparable brokers are suitable; you can buy the same Islamic global index there. For the Säule 3a there are digital providers with a freely selectable strategy — there you exclude the financial sector and get very close to a halal allocation (maximum amount 2026: CHF 7,258 for employees, tax-deductible). There is no Islamic bank in Switzerland.

🇦🇹 Austria: The same logic as in Germany — invest in the Islamic global index via Flatex Austria or Trade Republic. No Islamic bank exists in Austria; you build the halal portfolio yourself.

What does this mean for your Zakat? As soon as you’re invested, your portfolio counts towards your zakatable wealth (Nisab = the minimum amount above which Zakat becomes due). Rule of thumb: 2.5 percent per lunar year on the investable portion. Many DACH Muslims don’t calculate this at all — we walk you through the details in our dedicated Zakat article: Zakat on ETFs and Shares.

Conclusion

Halal investing is not secret knowledge. It’s the simple discipline of avoiding three things — interest (Riba), excessive uncertainty (Gharar) and gambling/speculation (Maysir) — and instead investing in real, transparent, permissible businesses. The rest, the precise screening of companies, is taken off your hands by screened products.

Once you’ve understood these three terms, you have the foundation. Everything else — the specific ETF, the Säule 3a, the Zakat calculation — builds on top of it. By the way: Rizq Management doesn’t stop at knowledge articles and webinars. Step by step, we’re also releasing digital tools that take exactly these steps off your hands.

In short: An investment is halal when it avoids interest, excessive uncertainty and gambling — and invests in real, permissible assets. Three terms, one foundation.

Further reading:

Sources & Notes:

Quran 2:275 (trade permitted, interest forbidden); 2:278–279; 30:39.
Screening criteria according to AAOIFI (Accounting and Auditing Organization for Islamic Financial Institutions), Shariah Standard 21 — the recognised international standard for equity screening (business-activity screen + financial ratios).
Data on day-trading losses: industry-standard studies on short-term trading; Rizq Management’s own DACH survey (n=49).
This is educational content and not financial advice. For your personal situation, consult qualified advice if needed. More about us in the Impressum.