NRI Guide

From Green Card to US Citizen: Naturalization, and the Indian Passport Question

The eligibility, tests and N-400 process to become a US citizen, plus the twist Indians must plan for: surrendering the Indian passport and applying for OCI.

NRI Guide desk
NRI HeraldJuly 12, 2026
3 min read
From Green Card to US Citizen book, US passport, Indian passport, Green Card, US flag, Capitol

After years as a green-card holder, the final step is US citizenship. For Indians it carries a decision no one else has to make in quite the same way: because India does not allow dual citizenship, becoming American means trading your Indian passport for an OCI card. Here is the whole process, both sides of it.

Who is eligible

  • Five years as a lawful permanent resident, or three years if married to and living with a US citizen
  • Continuous residence and enough physical presence in the US
  • Good moral character
  • Basic English, and passing a US civics test
  • At least 18 years old

The N-400 process

  • File Form N-400, online or on paper
  • Attend a biometrics appointment
  • Sit the interview, where an officer reviews your application and gives the English and civics tests
  • Take the Oath of Allegiance at a ceremony, the moment you become a citizen

The English and civics tests

You show you can speak, read and write basic English, and you answer civics questions on US history and government drawn from a published list. The study materials are free on the USCIS website, and most applicants pass with steady preparation.

The India angle: no dual citizenship

India's constitution does not permit dual citizenship. When you naturalise as a US citizen, you must surrender your Indian passport and formally give up Indian citizenship. Plan this deliberately:

  • Surrender your Indian passport to the Indian mission and obtain a surrender certificate
  • Apply for an OCI card to keep lifelong, visa-free travel to India and most NRI rights (see our OCI guide)

What US citizenship gives you

A US passport, the right to vote, freedom from green-card renewals and travel-time limits, the ability to sponsor more relatives, and security against losing status.

The bottom line

Naturalisation ends the long immigration journey, but the Indian side, passport surrender and OCI, needs its own plan so you are never left without valid travel documents. Fees and forms change, so confirm the current steps at uscis.gov and with your Indian consulate.

NRI Guide desk · July 12, 2026· Last reviewed July 13, 2026
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