Generally, mutual fund schemes don’t have any maturity period except for close-ended funds like ELSS. In case the investor passes away while the mutual funds' SIP is on or before the maturity term of the closed-ended mutual fund scheme, there is a certain procedure which is followed by the nominee, legal heir, or survivor in case of the joint holding of investment to claim the mutual fund proceeds. This process is known as transmission.
It is advised to the mutual funds' investor to add nominee always to the mutual fund investment same as any other investment. Keep the nominee updated about the same. The survivor or the nominee can request the transmission by submitting the valid documents and proofs which include the death certificate. The person who requests transmission must be KYC registered.