If you plan to relocate to India with a green card before obtaining U.S. citizenship, it can significantly complicate the naturalization process. To apply for U.S. citizenship, you must meet physical presence requirements: at least 2.5 years in the U.S. over the last five years and no single absence of a year or more. If you stay outside the U.S. for over six months but less than a year, you may need to provide an explanation.
A re-entry permit (Form I-131) allows you to stay outside the U.S. for up to two years without losing your green card, but it does not help with citizenship requirements. Form N-470 can protect your eligibility in limited cases, such as working for a U.S. company’s foreign branch, but it does not guarantee naturalization.
If you stay abroad for more than a year, you will likely need to restart your five-year residency requirement (or four years and one day if a re-entry permit was used). While re-entry permits can be renewed in certain cases, they do not protect your citizenship timeline.
Best advice: Obtain U.S. citizenship first and then relocate, as naturalized citizens can live abroad indefinitely without affecting their status. Please consult your lawyer regarding this.