After years of answering halal investing questions on Reddit and Quora, the same mistakes come up again and again. Here they are — and how to fix them.
MISTAKE 1: KEEPING EVERYTHING IN CASH "TO BE SAFE"
This is the most common and most costly mistake. Many people think: "I can't invest in stocks because I'm not sure what's halal, so I'll keep my savings in a current account until I figure it out."
The problem: Inflation at 3-4% per year means that £10,000 sitting in a current account loses £300-400 in purchasing power every single year. Doing nothing is not neutral — it is a guaranteed slow loss.
Fix: Start with one halal ETF (SPUS in the US, HIWS or MWIM in the UK) while you learn more. Perfect is the enemy of good.
MISTAKE 2: ASSUMING THE BROKERAGE NEEDS TO BE "ISLAMIC"
There is no such thing as a "halal brokerage" that matters for your investments. Fidelity, Schwab, Hargreaves Lansdown — these platforms are just pipes. What you buy through them is what determines halal compliance.
Fix: Open a standard brokerage account today. Use Zoya to screen what you buy.
MISTAKE 3: NOT UNDERSTANDING SCREENING STANDARDS
Not all halal ETFs use the same screening method. SPUS uses AAOIFI standards. Some ETFs use Dow Jones Islamic Market methodology. The differences are real and affect which companies are included.
Fix: Know which standard your ETF uses. Check the fund's fact sheet. If you're unsure, post the question here.
MISTAKE 4: IGNORING PURIFICATION
If you own a halal ETF, a small fraction of its dividends may come from companies with minor non-compliant revenue. You are required to donate that percentage to charity — this is called purification.
Many investors don't know this exists. Others know but don't do it.
Fix: Check your ETF's annual purification ratio (usually in the fund report or on Zoya). Calculate your share. Donate it to any charity. It's typically 1-3% of dividends received — small, but obligatory.
MISTAKE 5: BUYING BROAD INDEX FUNDS WITHOUT CHECKING
"I just bought the S&P 500 index fund" — but the standard S&P 500 includes banks, alcohol companies, and weapons manufacturers. A standard index fund is NOT automatically halal.
Fix: Look for Shariah-screened equivalents. SPUS instead of SPY. HIWS instead of VWRL. Always check before buying.
MISTAKE 6: WAITING FOR A FATWA ON EVERY DECISION
Some investors are paralysed, waiting for a scholar to approve every single investment before acting. Meanwhile, years pass and no wealth is built.
Fix: Learn the core screening methodology (AAOIFI or Dow Jones Islamic). Apply it. For edge cases, consult a scholar — but most mainstream companies either clearly pass or clearly fail. Don't let the 5% of ambiguous cases stop you from acting on the 95% that are clear.
Which of these have you fallen into? Be honest — most of us have done at least one. Share below and let's help each other move forward.