Now as per income tax act as soon as one NRI return to India permanently they need to convert their NRE account RFC account.
Now the interest on both these accounts is exempt till the time you are resident but not ordinary resident.
So who is a resident and who is a ordinary resident:
Resident is the one:
1 who has been in India for more than 182 in India in the previous year. Or
2 who has been in India for more than 60 days in the previous year and 365 days in the previous 4 years
To become an ordinary resident you need to fulfill both the condition i.e.
1 he has been a resident in India for atleast 2 years out of past 10 years. And
2 in previous 7 years he has been in India for 730 days and more.
Now if you come in India by december 2018 you will become a resident by 2019-2020 financial year and ordinary resident by 2021-2022 and by then I guess all your deposit will get mature so I guess there is no harm in returning to India by december 2018 as you will be a ordinary resident only by 2021-2022 and then only such amount can be tax however by then all your deposit will mature and no tax on interest then.
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