I'm moving abroad, Can I continue to use my Zerodha trading account?
You can use the account if you're moving abroad for a short-term period (6 months). The status doesn't change to NRI. Anything over a period of 6 months, you become an NRI and should change the account.
If a person leaves India for the purpose of employment, business or for any other purpose that indicates his intention to stay outside India for an uncertain period; then he becomes a non-resident from the day he leaves India for such.