What you can do online
One thing to know: if you want the reduced fee or a fee waiver, you have to file on paper.
- File Form N-400. It costs $710 online, compared with $760 on paper.
- Download the official question list and study guide for your test version.
- Check the current answers for questions about officials, like the President, on the USCIS test updates page.
- Practice with free quizzes, flash cards and audio.
Online practice from USCIS
USCIS has a free 20-question online practice test, but it covers the 2008 test. Its audio files and flash cards are also for the 2008 list of 100 questions.
For the 2025 test, USCIS gives you the list of 128 questions and a study guide as PDFs. As of October 2026 we didn’t find an official interactive practice test for it. Our practice test and the free sites on our where to learn page fill that gap.
Online quizzes aren’t like the real thing
Most online practice is multiple choice. The real test isn’t. The officer asks out loud and you answer from memory.
So use quizzes to learn, then test yourself the hard way. Cover the answers, have someone read the questions to you, and answer out loud.
Explore
Everything else, in one place
Sources: USCIS, USCIS Policy Manual, Vol. 12, Part E, Ch. 2 and 2 more. Checked October 2026.
- USCIS: Form N-400, Application for Naturalization ↗
- USCIS: Study for the Test ↗
- USCIS: 2008 Civics Practice Test ↗
- USCIS Policy Manual, Vol. 12, Part E, Ch. 2: English and Civics Testing ↗
Rules and fees can change, so check the official site before your test.