What is a Treasury bill ETF?

A Treasury bill (T-bill) ETF invests in very short-term U.S. government bills, often with maturities under a year. These funds are commonly used as a cash management tool.

Because maturities are short, duration risk is low, and price volatility is typically small. The yield tends to track short-term interest rates.

If you're choosing between cash, a T-bill ETF, and other short-term bond ETFs, compare yield after fees, liquidity, and how you plan to access the money. For many investors, a T-bill ETF is a convenient way to park cash inside a brokerage account.