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.
Thanks a lot Mr. Khanna and Team for helping us with my mothers permanent residency application process. You guys are extremely helpful, diligent and professional. Mr. Khanna with his legal team helped in every step of the process of the permanent residency application. They helped prepare all the legal documents with all the relevant evidence and the case was approved without any hitches. I and my mother are extremely grateful for their help and we would definitely recommend your services to other friends and family in the future.