A debt fund is a type of mutual fund that primarily invests in fixed-income instruments — things like government securities, corporate bonds, and money market instruments — rather than in company shares. Because these underlying instruments are generally more stable than stocks, debt funds tend to offer steadier, more predictable returns than equity funds, though usually with lower long-term growth potential too.
Debt funds come in many flavours based on how long their underlying bonds mature — from ultra-short-duration funds holding money for just a few weeks, to long-duration funds holding bonds for many years. Shorter-duration funds are generally less sensitive to interest rate changes and are used for parking money short-term, while longer-duration funds can see bigger price swings when interest rates move, but may offer higher returns over time. They're commonly used for goals within a 1 to 5 year horizon.