Best Short-Term Investments

Short-term money is money you expect to spend within roughly zero to three years, or money you cannot afford to see fall in value. The classic example is an emergency fund, but it also covers a house down payment, an upcoming tax payment, or savings for a purchase with a date attached.

The defining feature is a short, often fixed, time horizon. Because you cannot wait out a downturn, the priorities are the opposite of long-term investing.

• Safety of principal. The value should not swing much; you want close to the same dollars back.
• Liquidity. You can get the cash quickly, ideally without a penalty or a bad selling price.
• Yield comes last. Earning something is nice, but it is a distant third behind not losing the money and being able to reach it.

For money you might need on any given day, the most liquid options keep it fully reachable while still earning something.

• High-yield savings accounts. A bank savings account, typically FDIC insured up to the limits, that pays meaningfully more than a standard checking account. You can withdraw at will, which makes it the common home for an emergency fund. The trade-off is that the rate is variable and can drop when interest rates fall.
• Money market funds. A brokerage fund that holds very short-term, high-quality debt and aims to keep a stable value. It is popular for cash sitting in a brokerage that you want to keep liquid and earning, usually accessible within a day. The trade-off is that it is not FDIC insured the way a bank account is, though it is still considered low risk.

Both are the go-to for cash without a fixed date. Their yields move with short-term interest rates, so they rise and fall together, and neither locks your money up.

If you know roughly when you will need the money, locking it in for a set period can pay a bit more in exchange for giving up some access.

• Certificates of deposit (CDs). A bank deposit that pays a fixed rate for a chosen term, from a few months to several years, and is FDIC insured up to the limits. You typically know the exact return up front. The trade-off is that pulling the money out early usually triggers a penalty, so a CD suits money with a known date, like a purchase 6 to 18 months out.
• Treasury bills (T-bills). Short-term debt issued by the US government, considered among the safest places to hold money, with terms commonly ranging from a few weeks to a year. Unlike a CD, you can sell a T-bill before it matures in the secondary market if you need the cash, though the price you get can vary. The trade-off is a bit more setup than a savings account, and the return is fixed once you buy.

The shared idea is a known outcome for a known period. You accept reduced access in return for a rate you can count on, which is why these fit goals with a date attached rather than an open-ended emergency fund.

A step up in both potential yield and movement, short-duration bond funds trade daily and can earn a little more, at the cost of small price swings.

• Short-term bond funds and ETFs. Funds holding a basket of bonds that mature soon, which keeps them far steadier than long-term bond funds. They trade throughout the day and are easy to buy in any brokerage. The trade-off versus cash is that the share price can dip, so the value is not perfectly stable.
• Treasury ETFs. Funds that hold short-dated US government debt, combining government backing with the convenience of buying a single fund. Our guide to the best US Treasury ETFs and to ETFs for parking cash short term compares these in more detail.

These sit at the edge of what counts as short-term, and they carry a bit more principal risk than a savings account or a T-bill. They tend to suit money you will not need for closer to two or three years, where a small amount of movement is acceptable for a slightly higher expected yield.

Every option below prioritizes getting your money back over growing it. The right one depends on when you will need the cash and how much price movement, if any, you can accept.

Rates, terms, minimums, and insurance limits change constantly, so this compares the options in relative terms rather than quoting numbers. Verify the current details at your bank or broker before deciding, and remember that safe here means low risk, not zero risk.

The single most common mistake with short-term savings is reaching for stock-market returns. It is tempting when markets are rising, but the risk is exactly the wrong shape for money you will need soon.

• Stocks can fall hard and stay down. A drop of 20 to 30 percent or more can happen, and recovery can take months or years, which may be longer than your horizon.
• The timing risk is unavoidable. A downturn tends to arrive without warning, and it could land in the exact month you need the down payment or tax money.
• The upside is not worth it here. The extra return you might earn over a year or two rarely justifies the chance of having far less than you put in when the bill comes due.

The stock market is a tool for money you can leave alone for many years. For a good primer on how risk and time horizon interact, see stocks versus bonds.

Walnut is built for the other side of this line: longer-term, thematic investing, not the cash you need next month. If you already keep short-term money in savings, a money market fund, or Treasury bills and are thinking about the portion you can invest for years, Walnut lets you build a basket around a thesis, set target weights, and see how it would have tracked against a benchmark. You connect your real broker, chat through Claude, ChatGPT, or built-in AI, and place trades you approve yourself. It will not manage your emergency fund for you, and it does not tell you what to buy.