A fund's name is not a Shariah verdict. A label may tell you how a product is marketed, but it can't tell you which companies it owns, how those companies were screened, or whether the results are still current. To assess a Shariah-compliant fund, look beneath the label: the verdict is built from the holdings and the rules applied to them.
That distinction matters because compliance isn't a permanent property of a fund. A company can cross a financial threshold, a fund's portfolio weights can change, and different published rulebooks can classify the same company differently. Investors need a dated, holdings-based assessment, plus a clear account of how any impermissible income is purified.
Table of Contents
- What Makes a Fund Shariah Compliant
- How a Company Passes the Shariah Screen
- How Holdings Add Up to a Fund Verdict
- Why Rulebooks Reach Different Verdicts
- How Purification Works and What It Costs
- Monitor Holdings and Check a Fund Before You Buy
What Makes a Fund Shariah Compliant
A Shariah-compliant fund holds companies whose business activities and financial ratios pass the screening rules the fund follows. Compliance describes the portfolio, not the manager's intentions and not the words on the fund's name.
Think of a food tin. Its label says what the recipe is meant to be; its ingredient list tells you what's inside. A fund's holdings list plays the role of that ingredient list. Two funds with similar names may hold different securities, apply different standards, or report assessments from different dates. The name alone settles none of those questions.
The Islamic funds market is substantial, but its scale doesn't certify any individual portfolio. The Islamic Financial Services Board's stability report records that more than 63% of Islamic funds had less than USD 25 million in assets in 2024. Fund size is therefore a poor shortcut for assessing screening quality: a large fund still needs to pass its holdings through a stated methodology, and a small fund may do so as well.
Three details to check
- Holdings: Identify the securities in the fund and their portfolio weights. A fund's status depends on what it owns, not just what it tracks or calls itself.
- Rulebook: Find the screening standard and the thresholds it applies. “Shariah screened” isn't a single universal formula.
- Screen date: Confirm when the holdings and company financials were assessed. A verdict without a date can conceal changes in the portfolio or its underlying data.
The distinction between a fund label and a holdings-level result also matters to developers and advisers: a binary badge can't show which companies drove the assessment or what portion of the portfolio the calculation covered. A useful screening record should make those details traceable.
Your first move is simple: open the holdings list before relying on the fund's name. Then find the methodology and the date attached to the screen. If any of those are missing, you don't yet have enough information to judge the fund's status.
How a Company Passes the Shariah Screen
A company generally faces two kinds of review: whether its business activities are permissible, and whether its finances meet the applicable limits. Under the AAOIFI framework associated with Shari'ah Standard No. 21, a company can't offset failure in one test by passing another. The AAOIFI screening overview and Standard 21 reference describe the qualitative and quantitative screens used to assess equity eligibility.
Three screening stages
Run the activity screen first. Exclude companies whose principal activities are prohibited under the chosen standard. Examples include conventional finance, alcohol, gambling, pork, and adult entertainment. A company's clean balance sheet can't make a prohibited core business pass this stage.
Apply the financial tests to eligible businesses. Commonly reported AAOIFI limits include interest-bearing debt below 30% of trailing average market capitalization, interest-bearing securities and deposits below 30% of that denominator, and impermissible income below 5% of total revenue. The denominator and observation period matter: they're part of the rule, not clerical details.
Review each result against every applicable test. If a company breaches one of its required limits, it fails that screen, even if its other ratios are comfortably within bounds.
| Screening tests and thresholds under AAOIFI Standard 21 | Threshold | Measured against | If breached |
|---|---|---|---|
| Business activity | Core business must be permissible | Company's revenue sources | Excluded outright |
| Interest-bearing debt | Below 30% | Trailing average market capitalization | Not compliant |
| Interest-bearing securities and deposits | Below 30% | Trailing average market capitalization | Not compliant |
| Impermissible income | Below 5% | Total revenue | Not compliant |
Consider a hypothetical company with an average market capitalization of USD 10 billion. If its interest-bearing debt is USD 2.5 billion, the ratio is 25%, so it passes that particular debt test. If debt rises to USD 3.5 billion, the ratio becomes 35%, and it fails the test even if its impermissible income is very small. Passing the debt test alone doesn't settle the other screens.
Averaging market capitalization across a period makes the denominator less sensitive to a single day's share-price movement. But standards that use different denominators or averaging windows can still reach different results for the same company. When checking the arithmetic, separate interest-bearing debt from other liabilities; a primer on how to calculate a company's debt-to-equity ratio can help clarify which balance-sheet measures answer which questions, though debt-to-equity isn't itself the AAOIFI screening ratio.
To repeat the check, use the company's filings to identify the numerator and the denominator, then record the observation period and filing date. For a practical guide to the full company-level workflow, see how to check if a company is Shariah compliant. Keep the underlying figures, not only a pass/fail result, so someone else can reproduce the calculation when the data changes.
How Holdings Add Up to a Fund Verdict
A fund verdict is a weighted portfolio calculation. Screen each holding under the chosen rules, then measure how much of the fund's value sits in holdings that fail. Counting failing companies without considering their weights can misstate their significance: a small holding and a large holding don't contribute equally to the portfolio result.
For a hypothetical example, suppose a fund owns 100 companies. Four fail the selected company screen, and those four together represent 6.2% of the portfolio. The fund's non-compliant weight is 6.2%, not 4%. A fund-level rulebook then determines whether that weight crosses its own threshold. The company count alone can't answer that question.
Coverage is a separate part of the verdict. It measures how much of the fund's weight has enough usable information to assess. If 12% of the portfolio has no usable data, a calculation based on the remaining holdings covers only 88% of the fund. That leaves the result less certain, because the unassessed portion could change the overall picture.
Unknown isn't the same as compliant. A missing financial figure mustn't be stored or interpreted as zero. If coverage is inadequate, a careful screening process may leave the fund unrated unless the available holdings already reveal a breach under its rules.
Try a quick holdings check: take the fund's largest holdings, note each weight and screen result, then add the weights of the holdings that fail. That gives you a rough view of how much of the fund's weight is visibly non-compliant, but it doesn't replace a full assessment of all holdings or account for missing data.
A fund-screening process can make these distinctions visible by returning the verdict alongside holdings, coverage, and methodology. Akinda's fund screen applies five rulebooks and supplies a fund's non-compliant weight under each, which is also an input used for purification calculations.
The calculation flow is easier to interpret when the holdings' weights and verdicts are visible together. For a short visual overview, watch this explanation of how fund screening works:
A fund can't be assessed reliably from its ticker or label alone. The useful question is how much of the portfolio is covered, what the known failing holdings weigh, and which fund-level rule converts those inputs into a verdict.
Why Rulebooks Reach Different Verdicts
A fund's name cannot settle its Shariah status. Two screens can assess the same holdings and reach different verdicts because they apply different rules to the underlying companies.
Three points where the result can change
First, the denominator. A rulebook may compare debt with market capitalisation, while another uses total assets or enterprise value. When market capitalisation is the denominator, share-price movements can change the ratio even if debt stays constant. A ratio using a different base may respond differently.
Second, the averaging window. A multi-period average smooths short-term movements differently from a calculation using another period. For companies near a financial threshold, the selected window can affect the result.
Third, how borderline cases are classified. Some frameworks give a pass-or-fail verdict; others may include a doubtful category or classify business activities and income differently. A single label can hide these distinctions.
Investors may encounter the Dow Jones Islamic Market, FTSE Shariah, MSCI Islamic, and S&P Shariah methodologies in funds and index products. Their denominators, thresholds and business exclusions differ. Comparing the rulebooks side by side is more useful than treating their verdicts as interchangeable. A focused AAOIFI, IFSB and S&P Shariah comparison explains some of these differences.
National regulators also set different debt ceilings, measured against different denominators. A threshold is meaningful only when its base is clear. The analysis of differences across Shariah screening methods examines broader variation in screening methods, governance structures and risk profiles.
No single rulebook necessarily suits every investor. Choose the standard that aligns with the religious authority and jurisdiction you follow, then read the verdict in that context. For fund comparisons, use the same rulebook and relevantly similar screening dates, with enough holdings information to interpret the result.
How Purification Works and What It Costs
Purification can reduce investment returns. A peer-reviewed empirical study using S&P 500 data from 1994–2014 tested three purification approaches for income associated with interest and other non-permissible sources. It found statistically significant negative effects on portfolio performance, with an estimated annual impact of as much as 0.95%, depending on the method; the study of purification approaches and portfolio performance makes clear that purification is a measurable return cost, not just an administrative step.
The operational task is to estimate the investor's share of impermissible income and donate the calculated amount under the scholar-approved method. For a fund, the relevant input is the weighted non-compliant income contribution of its holdings, not the percentage of companies that fail a screen.
A practical calculation sequence
- Find the fund's non-compliant weight for the period. Use the figure tied to the applicable holdings and effective dates.
- Identify the income the method includes. This may involve distributions such as dividends and interest, but the chosen method determines exactly which income types enter the calculation.
- Account for how long you held the units. Your share of the fund's income depends on your ownership period.
- Apply the approved method consistently. Record how it treats dividends, capital gains, interest, and cash balances.
- Donate the calculated amount and retain the working. Keep the date, figures, calculation method, and donation record together.
| Purification inputs and the error each one causes | What it changes | Error if wrong |
|---|---|---|
| Non-compliant weight | Share of fund income to purify | Stale or incomplete holdings understate the amount |
| Dividend and interest income | Base the rate is applied to | Different income treatment changes the result |
| Capital gains | Whether gains enter the base | Inconsistent treatment shifts the figure |
| Cash balances | Whether idle cash counts as impermissible income | Ignoring cash can understate the amount |
| Ownership duration | Your share of impure income | Ignoring the holding period miscounts your share |
| Calculation frequency | How often the amount is updated | Infrequent updates lag the current figure |
The inputs drive the result. Stale holdings can understate the amount; more frequent updates can increase the share allocated away from investor returns. Different treatment of income categories can produce different calculations even when the fund holdings are the same.
A fund's disclosure should give you the non-compliant weight, the purification rate, and the effective dates for those figures. A practical walkthrough of the calculation is available in this guide to how to calculate purification. Don't assume an unavailable figure is zero, and don't treat one provider's method as universal.
Monitor Holdings and Check a Fund Before You Buy
A company's compliance status is dated, not permanent. New financial statements can change the debt or cash figures used in a screen; a share-price move can affect a market-capitalization denominator; a business can change its revenue mix; and a merger, acquisition, or new borrowing can alter the company's position. A company can therefore move from passing to failing without changing its principal business.
A hypothetical debt-funded acquisition shows how the change can reach fund investors. The acquisition adds interest-bearing debt, the company's ratio crosses the applicable limit, and a subsequent screen marks it as failing. If the fund still holds that company, its non-compliant weight rises according to the holding's portfolio share. The date of the latest review and the handling of a newly failing constituent matter as much as the original approval.
Compliance isn't a complete ethics or risk assessment
A company can pass a religious screen without that result answering every question an investor may have. Shariah screening doesn't, by itself, establish a fund's climate profile, governance quality, fee level, or exposure to controversies. Those issues need their own assessment; don't treat a religious-compliance label as a general-purpose quality or suitability rating.
Practical rule: A verdict tells you what a stated screen concluded, not whether the investment fits your financial goals or every value you hold.
A pre-purchase checklist
- Name the rulebook. Confirm whether the fund uses AAOIFI, Dow Jones Islamic Market, FTSE Shariah, MSCI Islamic, or S&P Shariah. Akinda's fund screen returns results under five rulebooks: an AAOIFI-derived screen and the four named index methodologies.
- Check non-compliant weight and coverage together. A high visible non-compliant weight can affect the fund-level result. Low coverage reduces confidence because part of the portfolio hasn't been assessed. Under the Akinda fund screen, a fund is returned as NOT HALAL when the visible non-compliant holdings weigh more than 5% of the fund; when coverage is below 95% and the visible non-compliant weight doesn't exceed 5%, the fund isn't rated.
- Check the screen date and holdings. Confirm that the holdings and company information correspond to the assessment date. A verdict without a current, identifiable basis is difficult to reproduce.
- Review purification information. Find the non-compliant weight and purification rate, then confirm the effective dates and the method used to treat income.
- Compare funds on a consistent basis. Use the same rulebook when comparing verdicts. If standards differ, first identify the different thresholds and denominators rather than treating the results as directly comparable.
A missing value isn't a pass. If data coverage is incomplete, look for an unrated result or another explicit account of what couldn't be assessed. Don't convert unknown holdings into clean holdings by assuming their ratios are zero.
The final decision rule is straightforward: buy only when you can state which rulebook produced the result, how much of the fund was covered, what its non-compliant weight is, and how purification is handled. If the fund's name is the only thing you can verify, you don't yet have a holdings-based verdict.
Akinda provides a Shariah screening API and fund screener that assess fund holdings under five rulebooks and show the non-compliant weight used in purification calculations. Visit Akinda to explore how holdings-level verdicts, coverage, and methodology comparisons can support a more transparent fund check.