Where to Park Cash: T-Bills, Money Market Funds, and HYSAs
Cash is finally paid again, but the difference between the default account and the smart one is still several percentage points. Here is the July 2026 map of where short term money should live.
The Inattention Tax
Cash is the money you cannot afford to risk, the emergency fund, the tuition due in March, the house down payment. For that job the goal is not maximizing return, it is not losing, while quietly collecting whatever safe yield exists. And in mid 2026, with the federal funds rate at 3.50 to 3.75 percent, safe yield genuinely exists. The scandal is the spread between venues. The national average savings account still pays under half a percent, while top online savings accounts pay around 4 percent and money market funds around 3.5. On a 10,000 dollar emergency fund, that is roughly 350 dollars a year for filling out one form, the purest inattention tax in personal finance.
The Three Venues
A high yield savings account, or HYSA, is an ordinary bank account, usually at an online bank, carrying FDIC insurance up to 250,000 dollars per depositor per bank. As of July 2026 the competitive ones pay roughly 4.0 to 4.4 percent annual yield. Strengths, instant access, government insurance, zero complexity. Weakness, the rate is set by the bank\'s marketing department and can lag or fall at any time, which is why big legacy banks still pay nearly nothing to customers who never look.
A money market fund is a mutual fund, typically at your brokerage, holding very short term government and corporate debt. Yields track the Fed almost mechanically, currently around 3.5 to 3.6 percent for the big government funds. It is not FDIC insured, but funds holding Treasury and government debt carry credit risk near zero, and the structure has an advantage the bank account lacks, the yield adjusts automatically to market rates with no shopping required. Money already sitting at a brokerage often belongs here by default.
A Treasury bill is a direct loan to the US government for a year or less, bought through a brokerage or TreasuryDirect, currently yielding in the mid 3s for three month paper. T-bills add one feature the others lack, their interest is exempt from state and local income tax, which raises the effective yield meaningfully for savers in high tax states. The cost is minor friction, fixed maturities instead of instant withdrawal, though ETFs that hold T-bills restore the liquidity at the price of the fund wrapper.
| Venue, July 2026 | Typical yield | Protection | Best feature |
|---|---|---|---|
| Top HYSA | About 4.0 to 4.4 percent | FDIC insured | Instant access, insured simplicity |
| Government money market fund | About 3.5 to 3.6 percent | Not FDIC, near zero credit risk | Rate tracks the Fed automatically |
| 3 month T-bill | Mid 3 percent range | Full faith and credit | State tax exemption |
Notice the top HYSAs currently out yield T-bills. That is a marketing subsidy, online banks paying up to win deposits, and it can end whenever they choose. The market rate is the money fund. Anything above it is a coupon worth clipping while it lasts.
Matching Money to Venue
The clean framework is time based. Money needed this month lives in checking, yield is irrelevant at that scale. The emergency fund, three to six months of expenses, belongs in an HYSA or money market fund where access is same day and the yield is real. Known future expenses with dates, tuition, a car, a down payment, suit T-bills matured to the date, locking today\'s rate and removing all temptation. And money you will not touch for five or more years mostly should not be in cash at all, as this site\'s asset allocation article argues, because cash\'s quiet enemy is inflation, still running above 3 percent in 2026, meaning even a 4 percent yield is barely a positive real return. Cash is for safety and scheduled needs, not for wealth building.
The One Afternoon Fix
The execution is deliberately boring. Open one online HYSA at an FDIC insured bank, link it to checking, automate the emergency fund into it, and sweep brokerage cash into the default money market fund. Check the rate twice a year against the Fed\'s range, if your bank drifts far below the leaders, moving takes minutes and banks count on you not doing it. That is the entire skill. It pays a few hundred dollars an hour for the afternoon it takes, which is likely the best wage a college student will earn this year.
The Bottom Line
In 2026 cash pays again, roughly 3.5 percent at market rates and around 4 at promotional ones, but only for savers who place it deliberately. HYSAs for insured instant access, money market funds for automatic market yield, T-bills for dated goals and state tax savings, and nothing long term left in cash at all. The banks\' entire deposit business model is your inattention. Decline to fund it.