For most parents, saving for a child's future begins long before the child even starts schooling. Whether the goal is funding higher education, supporting a wedding, or creating a financial cushion for adulthood, the earlier parents start investing, the more time compounding has to work.Among the many investment options available, the Public Provident Fund (PPF) remains a popular choice because of its attractive interest rate, government backing, tax benefits and long investment horizon.But many parents are unsure whether they should open a separate PPF account for their child. Experts say a child's PPF account can be an effective long-term savings tool, provided parents understand the rules before investing. How can parents open a PPF account for their child? Here's who is eligible A PPF account can be opened in the name of a minor, but it cannot be operated independently by the child.“A PPF account can only be opened and operated by the child's parent or legal guardian. Only one guardian can operate one PPF account for the same child at a time, implying that both parents cannot operate separate PPF accounts for the same minor,” says Swati Jain, CEO – Wealth at Arihant Capital Markets,This means both parents cannot separately operate two PPF accounts for the same child, even if they bank with different institutions.Grandparents also cannot open a PPF account for their grandchild unless they have been legally appointed as the child's guardian.Also Read: Do you lose your interest and deposit if you have multiple PPF accounts? Here's what the rules sayWhat are the benefits of opening a PPF account for children ET Online