I have a current PAN number issued to me almost 10 years ago. I just became a US citizen and expect my OCI in 3 months. Will that number still be valid or I do have to apply as a NRI? Any thoughts on the PAN numbers for IT purposes? My kid is a born US citizen and she has a PIO card. Is it advisable to apply for PAN for her (can can I?) if she will inherit indian real estate from family?