HYSA vs. Money Market Funds in 2026: Where Cash Earns More

The question is no longer whether to chase yield on cash, but where to put it to earn the most, with the least friction. For most of 2025, savers faced a familiar dilemma: the Fed had cut rates three times, but yields on cash accounts remained significantly higher than before 2023.

What Each Account Actually Is

Online banks like Marcus, Ally, and SoFi have dominated this space because they have lower overhead than their brick-and-mortar competitors and can pass some of that savings on to their depositors. A high-yield savings account, or HYSA, is a deposit account offered by a bank or credit union, almost always FDIC or NCUA insured up to $250,000 per depositor per institution. The interest rate is variable and set at the discretion of the institution.

A money market fund is a different animal altogether. It is a mutual fund registered with the SEC under the Investment Company Act of 1940, governed by Rule 2a-7, which imposes strict limits on portfolio maturity and credit quality. It invests in short-term instruments such as Treasury bills, repurchase agreements and commercial paper, and is not FDIC insured.

Where Rates Stand in April 2026

The spread between the best HYSAs and the best money market funds is narrow, often less than half a percentage point, so the decision usually comes down to other factors. Meanwhile, government money market funds at major brokerages like Fidelity, Vanguard, and Schwab are posting seven-day yields in the range of 4.20% to 4.60%, with some Treasury-only funds at the higher end of that range. As of April 2026, the most competitive HYSAs from online banks are paying in the range of 4.00% to 4.50% APY, while the national average savings rate tracked by the FDIC remains significantly lower, hovering around 0.40% to 0.60% APY, a reminder that the majority of Americans with savings at traditional banks are leaving significant money on the table.

Neither vehicle locks in a rate, which is a key difference from certificates of deposit or Treasury notes bought at auction. One structural point: if the Fed cuts again in 2026, HYSA rates will probably follow within weeks.

The Tax Angle Most Savers Overlook

A Treasury money market fund yielding 4.40% gross may deliver a better after-tax return than a HYSAR yielding 4.50% for someone in a high state tax bracket. This is where money market funds can offer a concrete advantage, depending on your tax situation. Government and Treasury money market funds typically hold a large percentage of their assets in government bonds, and the interest income from direct government bonds is generally exempt from state and local income taxes, but not federal taxes. For savers in high-tax states like California, New York, and New Jersey, where combined state and local taxes can reach 10% to 13%, this exclusion can make a significant difference in the after-tax yield.

Money market fund distributions are reported on a 1099-DIV, and the portion attributable to U.S. government obligations is usually broken out so that you can exclude it from your state return; most major brokerages provide this breakdown automatically. HYSAs, on the other hand, generate interest income that is fully taxable at the federal and state level. The interest is reported on a 1099-INT.

Liquidity and Access: Practical Differences

Transfers from a HYSA to an external checking account usually take one to three business days, although some institutions offer faster options. Both accounts offer high liquidity, but they are not identical. HYSAs held at banks were formerly governed by Regulation D, but the Federal Reserve removed the six-withdrawal-per-month limit in 2020. Individual banks may still impose their own limits, so it pays to check the terms.

For an active investor, this integration is a genuine convenience that a stand-alone HYSA cannot match. If the money is already in a brokerage account, moving money from a money market fund into a stock or bond purchase is usually seamless and immediate. Money market funds at a brokerage settle differently depending on the fund type. Many government money market funds at major brokerages now offer same-day or next-day settlement for redemptions.

Safety, Insurance, and the Risk You Are Actually Taking

For most households, this is enough. Savers with larger cash balances can spread their funds across several institutions or use account structures that extend coverage. The FDIC insurance on HYSAs is straightforward: up to $250,000 per depositor per insured institution is protected in the event of a bank failure.

For retail investors who use government or Treasury-only funds at regulated brokerages, the practical risk is very low, but not zero, as FDIC insurance is zero. Money market funds are not insured, and they are considered very low risk, but not risk-free. The industry term is that the fund could theoretically “break the buck,” meaning that the net asset value could theoretically fall below $1.00, which has happened only twice in the modern era, most recently during the 2008 financial crisis.

When This Comparison Does Not Work in Your Favor

As of early 2026, one-year Treasury yields are in the range of 4.00% to 4.30%, which is competitive with the best variable-rate options and removes the reinvestment risk that comes with rolling money market funds or HYSAs quarter after quarter. If you are reasonably confident that you will not need money for 12 to 24 months, Treasury notes purchased directly through TreasuryDirect.gov or through a broker, or short-term CD ladders, may lock in yields that protect against further Fed cuts. Neither HYSAs nor money market funds are the right answer for cash you are holding for more than a year or two.

On the other hand, money market funds in a brokerage account are one click away from being invested in something much more volatile, which requires a different kind of discipline. There is also a behavioral risk that is worth mentioning. High-yield savings accounts at stand-alone online banks are slightly more difficult to access than money market funds in a brokerage account, which may actually be an advantage for savers who are prone to spending idle cash.

How to Decide in 2026

The yield difference between the two best options in each category is small enough that the decision should be driven by your account structure and tax situation, not by chasing a tenth of a percentage point. The practical framework is fairly simple: if your cash is already in a brokerage account, a government or Treasury money market fund is probably the most efficient choice: you get competitive yields, potential state tax benefits, and seamless integration with your investment portfolio. If your cash is operating as an emergency fund or short-term savings bucket that lives separately from your investment accounts, a top-tier high-yield savings account at an FDIC-insured online bank is hard to beat for simplicity and safety.

The comparison that matters is not HYSA versus money market fund, but either of them versus doing nothing. The difference between 0.40% and 4.40% is real money. On a cash reserve of $25,000, the difference between 0.40% and 4.40% is about $1,000 in annual interest.

Additional Reading

• Federal Reserve – reports and data on the target for the federal funds rate and monetary policy decisions, available at federalreserve.gov
• FDIC – consumer resources on deposit insurance limits and how coverage applies to savings accounts, at fdic.gov
• Consumer Financial Protection Bureau – guides to comparing savings account rates and understanding account terms, at consumerfinance.gov
• Fidelity and Vanguard – pages of government money market funds, with current seven-day yields and portfolio compositions
• Morningstar – analysis and ratings of money market funds, including safety classifications and yield comparisons across fund categories