Target Maturity Funds (TMFs) are open-ended passive debt funds that invest in government bonds, public sector undertaking (PSU) bonds, and state development loans. They aim to replicate the makeup of an underlying index such as the NIFTY or NIFTY PSU Bond, NIFTY SDL (State Development Loan), etc. However, instead of attempting to outperform the index, the goal is to produce a return identical to it.