If you're planning to invest in S&P 500 ETFs for the next 15 years, you have several amazing options. US-based platforms like Vanguard, Fidelity, and Schwab are known for their secure services and low-cost ETFs.

For those in India, platforms such as Zerodha, Groww, Kuvera, and Appreciate provide access to US ETFs, each with different fee structures and user experiences. Select the platform that best suits your needs.

I haven't used AU's FDs, but they offer 7.25% interest on 12-month deposits. You'd get about ₹725 on ₹10,000, or ₹7,250 on ₹100,000. They have easy online access, different deposit lengths, and better rates for seniors, which could be good for short-term savings.

JioCoin is basically like points you get for using Jio stuff. It's not a true cryptocurrency; rather, it's more akin to discount coupons, similar to Tata Neu Coins. You earn them by using Jio services and can use them to get deals. Because India doesn't allow crypto, JioCoin is just a reward system and maybe a way for Jio to get attention.

You can take a loan from both public sector banks as well as private sector banks, which provide the best interest rates on home loans.

Public sector banks like State Bank of India (SBI) and Bank of Baroda (BoB) are known for their competitive interest rates and stability. State Bank of India (8.50% to 9.65% per annum) and Bank of Baroda (8.50% to 9.20%) are the best options.

Private sector banks such as HDFC Bank and Axis Bank often provide attractive interest rates and expedited processing. HDFC Bank (8.55% to 9.50%) and Axis Bank (8.60% and 9.60%).

All these banks offer good, competitive interest rates and have some processing fees. To get the special interest rate offers, your CIBIL score should be 750 points or more.

As an NRI, you can not open a new PPF account. But if you had already opened your PPF account when you were an Indian resident, you can continue investing in it until its maturity. You can deposit up to ₹1.5 lakh per year, and withdrawals are allowed as per PPF rules.
And once your PPF account completes 15 years, you cannot extend it further. Extensions beyond 15 years are not allowed for NRIs.