USCIS Guidance on Payment of N-400 Application Fee with a Credit Card
You may pay for your N-400, Application for Naturalization, using a credit card. There is no additional fee to pay with your credit card. The N-400 is the only form that can be paid for by credit card using the G-1450, Authorization for Credit Card Transaction.
Acceptable Credit Cards
You may use Visa, MasterCard, American Express and Discover. You may also use gift cards with Visa, MasterCard, American Express and Discover logos.
Hi, I have been interacting with Mr. Khanna since two months regarding our green card and H1 applications and he is been so informative and helpful in terms of clarifying the doubts that we have had come across for all our applications. Thank you Mr. Khanna and team for all your help and support. Regards, Syed