Ultra Short Duration Fund

How it works

Ultra short duration funds are a SEBI-defined debt category that must maintain a Macaulay duration of 3 to 6 months. They invest in short-maturity money-market and debt instruments — commercial paper, certificates of deposit and short-dated bonds. The deliberately short duration keeps interest-rate risk low, so the NAV stays relatively stable, while the slightly longer maturities than a liquid fund aim to squeeze out marginally higher returns.

They sit just above liquid and overnight funds, and clearly below low- and short-duration funds, on the overall debt-fund risk ladder.

In India

These funds suit money you expect to need within a few months to about a year — surplus cash, an emergency layer beyond your immediate buffer, or funds parked temporarily between deployments. They typically aim to beat plain savings-account returns and short FD rates for these horizons, while offering better liquidity and no fixed lock-in period.

A genuine word of caution from history: some ultra-short funds have taken on extra credit risk to boost their headline yields, and a sudden downgrade of a holding can dent the NAV unexpectedly. Stick firmly to funds with high-quality, well-rated portfolios rather than chasing the top yield.

Why it matters

Ultra short funds usefully bridge the gap between zero-return idle cash sitting in a bank and longer-term debt funds that carry real rate risk. For genuinely short-horizon money, they offer a sensible blend of stability, liquidity and slightly better returns than a liquid fund, without exposing you to the price swings of longer-duration funds when rates move.

Common mistakes

Don't treat "ultra short" as a synonym for risk-free — these funds carry both small interest-rate risk and real credit risk on their holdings. For money you might need within days, an overnight or liquid fund is genuinely safer. And remember the post-2023 tax rule: gains are taxed at your slab rate like other debt funds, so always compare post-tax returns against alternatives before parking large sums.