Investing ₹10,000/month in the Public Provident Fund (PPF) could build a corpus of ₹32.54 lakh in 15 years, compared with ₹24.22 lakh through a Post Office Recurring Deposit (RD), according to Livemint. The estimates assume annual interest rates of 7.1% for PPF and 6.7% for RD remain unchanged. Actual returns may vary with changes in interest rates and tax rules.