Non-resident Indians (NRIs) and overseas citizens of India (OCIs) can consider investing in FCNR(B) and NRE fixed deposits to achieve reliable returns. While FCNR(B) deposits safeguard against currency fluctuations as they are held in foreign currency, NRE deposits offer opportunities in Indian rupees without such protection. Ultimately, your decision should align with your currency expectations and future financial objectives. Both investment avenues are tax-exempt and allow full repatriation.