A money market fund is not halal. Fidelity Government Money Market Fund (SPAXX), Vanguard Federal Money Market Fund (VMFXX) and Schwab Prime Advantage Money Fund (SWVXX) all earn their return from interest: Treasury and agency debt, repurchase agreements and, in SWVXX's case, short-term paper from US and foreign issuers. The $1.00 share price makes them look like cash, but the monthly dividend is riba, and most brokerage accounts default uninvested cash into one of them. This page explains what each fund holds, what Fidelity, Vanguard, Schwab and Robinhood do with idle cash, how to switch or purify, and where a Muslim investor can park money instead. Start with our verdict page on SPAXX if you only hold cash at Fidelity.
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What a money market fund actually holds
A money market fund is a mutual fund that buys very short-term debt and tries to keep its share price fixed at $1.00. Vanguard's own description of VMFXX is the clearest: the fund invests at least 99.5% of its total assets in cash, US government securities and repurchase agreements collateralized by government securities, and keeps its dollar-weighted average maturity at 60 days or less. Fidelity describes SPAXX in the same terms, as a taxable money market fund investing in US Government Agency and Treasury debt and related repurchase agreements. Schwab's SWVXX is a prime fund, which means it also buys high-quality short-term paper issued by US and foreign companies and banks.
Every one of those instruments is a loan. A Treasury bill is a loan to the US government sold at a discount; a repurchase agreement is a collateralized overnight loan; commercial paper is a loan to a corporation. The fund collects the interest and pays it out as a monthly dividend. Vanguard's distribution table for VMFXX shows a dividend of $0.003037 per share paid on October 1, 2026, which is simply the interest earned in September divided across the shares. There is no underlying asset, trade or rental stream to share in, which is what separates these funds from a sukuk fund or a profit-sharing deposit.
SPAXX, VMFXX and SWVXX side by side
The three largest default funds differ in cost and in what they hold, but not in the nature of their income. The figures below are taken from the fund pages at Fidelity, Vanguard and Schwab Asset Management on September 17, 2026. Fidelity's public SPAXX page did not load its data table for us, so the SPAXX row records only what Fidelity's account FAQ states about the fund; check the yield and expense ratio in your own account before relying on them.
| Fund | Type | Expense ratio | 7-day yield (Oct 6, 2026) | Minimum | Income source |
|---|---|---|---|---|---|
| SPAXX (Fidelity) | Government | Not captured | Not captured | None as core position | Agency and Treasury debt, repos |
| VMFXX (Vanguard) | Government | 0.11% | 3.80% SEC yield | $3,000 | Government securities, repos |
| SWVXX (Schwab) | Prime | 0.34% net (0.35% gross) | 3.70% | None | US and foreign short-term paper |
SWVXX held $249.2 billion in net assets on September 17, 2026 with a weighted average maturity of 30.40 days, which tells you how short the loans are. VMFXX has run since July 13, 1981. None of this changes the ruling. A government fund and a prime fund differ in credit risk, not in whether the return is interest. Fidelity's own FAQ says the benefit of its core position is that it lets you earn interest on uninvested cash balances, credited on the last business day of the month.
What each broker does with your idle cash by default
The problem for a Muslim investor is rarely that they chose a money market fund. It is that the broker chose one for them. At Fidelity, opening an account automatically establishes a core position. For non-retirement accounts the choices listed in Fidelity's FAQ are SPAXX, the Fidelity Treasury Fund (FZFXX) and a Taxable Interest Bearing Cash Option (FCASH), which Fidelity says paid 1.94% as of September 18, 2026. For retirement accounts the choices are SPAXX or the FDIC-Insured Deposit Sweep Program, where cash goes to interest-bearing accounts at program banks. All three options pay interest; Fidelity lists no non-interest core position.
At Schwab the default is not SWVXX at all. Schwab's Cash Features Disclosure Statement explains that most accounts are only eligible for the Bank Sweep, which moves balances of $1.00 or more each business day into deposit accounts at program banks, or the Schwab One Interest feature. Both pay interest, credited on the 15th of each month, and the disclosure says the rate could in some circumstances be zero. SWVXX is a fund you buy deliberately, and Schwab notes it is available only to Schwab clients. At Vanguard, the settlement fund that holds brokerage cash is VMFXX, so a Vanguard account holder is in the fund from the first deposit.
Robinhood is the one large broker where the sweep is opt-in. Its brokerage cash sweep pays 3.6% APY on eligible cash, but only for Robinhood Gold subscribers at $5 a month who then turn on the High-Yield Cash feature, with deposits placed through the IntraFi Network Deposit Sweep Program. A Robinhood customer who never enrolls does not receive that interest. That makes Robinhood easier to keep clean than Fidelity or Vanguard, although the platform has other issues covered in our Robinhood review for Muslim investors.
The ruling, and what to do about interest already received
Scholars who permit buying shares in companies with incidental interest income do so because the company's main business is a halal trade. A money market fund has no such business: its entire purpose is to lend money at interest and pass that interest to you. That is why the fund fails even the lenient screens used by Zoya, Musaffa and the index providers, and why the SPAXX verdict on this site is a clear not halal. Holding a few dollars of settlement cash for a day between trades is a practical necessity most scholars tolerate; choosing to leave $20,000 earning 3.8% in VMFXX for a year is not.
If your account has already paid out money market dividends, the standard approach is to give the full amount of the interest to charity without intending reward, and without labelling it zakat. Your 1099-DIV or year-end statement lists the dividends from the fund by month, so the figure is easy to find. Our guide to disposing of bank interest covers the fiqh and the practical steps. Then change the setting so it does not recur.
- Download the year's dividend history for the sweep fund from your broker's documents page and total the payments.
- Give that total to a 501(c)(3) as purification money, not as zakat, and keep the receipt for your own records.
- Move any cash you do not need for trades in the next few days out of the sweep and into a halal holding or a riba-free deposit account.
- At Fidelity, check whether a non-interest core option can be added by calling the number on the core position FAQ; the public list shows none.
- Set a calendar reminder each quarter to sweep stray dividends and cash out again.
Halal places for idle brokerage cash
There is no halal money market fund listed in the US, so the alternatives trade a little liquidity or price stability for compliance. Inside a brokerage account the closest substitute is a sukuk fund. SP Funds runs the SPSK sukuk ETF, which trades like a stock and can be bought with the proceeds of a sale the same day; its current yield and expense ratio are published on spfunds.com, which was not reachable when we checked, so confirm them there. The Amana Participation Fund (AMAPX) from Saturna Capital is the mutual fund route: it holds sukuk, murabaha and wakala certificates, keeps a dollar-weighted average maturity of two to five years, charges 0.82% and showed a 30-day yield of 3.04% on September 30, 2026. Its one-month return was negative 1.72%, which is the trade-off: the price moves.
Outside the brokerage, riba-free deposit accounts hold cash at a fixed value. Stearns Bank's Salaam Banking program offers segregated profit-sharing deposits inside an FDIC-insured national bank, and University Islamic Financial's deposit products work on a similar basis through University Bank. Both publish their current profit-sharing terms on their own sites, and both are compared in our halal savings accounts hub. For an emergency fund, a deposit account beats a sukuk fund because the balance does not fall when rates rise.
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| Option | Where it sits | Price stable? | Income type | Best use |
|---|---|---|---|---|
| SPSK sukuk ETF | Any brokerage | No, trades on exchange | Sukuk profit distributions | Cash waiting weeks or months to be invested |
| AMAPX participation fund | Saturna direct or brokerage | No, daily NAV | Sukuk, murabaha, wakala profit | Income sleeve in an IRA |
| Salaam Banking deposit | Stearns Bank | Yes, FDIC-insured | Profit-sharing, not guaranteed | Emergency fund, house deposit |
| UIF deposit account | University Bank | Yes, FDIC-insured | Profit-sharing | Savings kept outside the brokerage |
| Leave in sweep | Broker default | Yes | Interest | Only for days between trades |
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Settlement timing without a sweep
Readers sometimes ask whether they can simply hold zero cash. In practice you cannot, because every sale lands in the core or settlement position before it can be reinvested, and every purchase draws from it. Fidelity's FAQ notes that trade settlement times vary by security and that retirement accounts must hold 100% of a trade's value at the time the order is placed. The workable routine is to buy your halal ETF or fund the same day you deposit or sell, so cash sits in the sweep for the shortest period the system allows. Any dividend the sweep pays on those few days is tiny and should be added to the purification total.
If you hold a sukuk ETF as your cash substitute, remember that selling it to raise cash for another purchase takes a settlement cycle before the money is available in a cash account. Margin accounts avoid that wait, but they do so by borrowing, which is why we tell readers to keep IRAs and halal brokerage accounts as cash accounts. The investing hub covers account types in more detail.
Verdict for a Roth IRA holder with cash waiting
If you have a Roth IRA at Fidelity, Vanguard or Schwab with cash sitting in SPAXX, VMFXX or a bank sweep, invest it this week rather than waiting for a better entry point. A lump sum into SPUS, HLAL or an Amana fund is halal today; the same money earning 3.8% in VMFXX is not. If you genuinely need to hold cash for a year, put the long-term portion in AMAPX or SPSK inside the IRA and accept the price movement, and keep the short-term portion in a profit-sharing deposit account outside it. Purify any sweep dividends received so far, then set the account so the sweep balance stays near zero. Facts checked against fidelity.com, vanguard.com, schwabassetmanagement.com, schwab.com, robinhood.com, saturna.com on September 17, 2026.
Frequently asked questions
Is SPAXX halal?
No. Fidelity describes SPAXX as a taxable money market fund investing in US Government Agency and Treasury debt and related repurchase agreements, with at least 99.5% of assets in cash, government securities and repos. Its monthly dividend is interest on those loans. Fidelity uses it as the default core position for most accounts, so check your own account and purify any dividends received.
Is VMFXX halal?
No. Vanguard Federal Money Market Fund invests at least 99.5% of its assets in cash, US government securities and repurchase agreements, pays a monthly dividend accrued daily, and showed a 7-day SEC yield of 3.80% on September 17, 2026. Because it is Vanguard's settlement fund, a brokerage client holds it automatically. Keep the balance near zero and give away any dividends.
Is SWVXX halal?
No. Schwab Prime Advantage Money Fund is a prime money market fund that buys high-quality short-term paper from US and foreign issuers, with a 7-day yield of 3.70% and a net expense ratio of 0.34% on September 17, 2026. Unlike SPAXX or VMFXX it is not a default sweep; a Schwab client has to buy it, so the simplest fix is not to.
Is a government money market fund better than a prime fund for a Muslim?
Not from a Shariah standpoint. A government fund lends to the Treasury and agencies, a prime fund also lends to banks and corporations, but both earn interest and both pay it to you. The distinction matters for credit risk and for state tax treatment, not for permissibility. Treat them the same and move the money.
Can I keep a few hundred dollars in the sweep for trading?
Most scholars tolerate small unavoidable balances that pass through a settlement account for a few days, because the broker gives you no interest-free option and the amounts are incidental. The condition is that you do not treat the fund as a savings vehicle and that you give away whatever interest it pays. Fidelity's public list of core positions shows no non-interest choice, so this tolerance is what most Fidelity customers rely on.
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What is the closest halal equivalent to a money market fund?
A short-duration sukuk fund inside the brokerage, or a profit-sharing deposit outside it. AMAPX holds sukuk, murabaha and wakala certificates with a two to five year average maturity and yielded 3.04% on September 30, 2026; SPSK is the ETF route. Neither holds a fixed $1.00 price. For money you cannot afford to see move, a riba-free deposit account at Stearns Salaam Banking or UIF is the better match.
