Naturalization is the application by which a permanent resident becomes a U.S. citizen, made on Form N-400. It is often treated as a formality at the end of a successful path, and it is not. It reopens the examination of how permanent residence was obtained, and subjects the preceding years to timing rules many people discover late.
The routes, and how much time each asks for
| Route | Continuous residence | Physical presence |
|---|---|---|
| General | Five years as a permanent resident, up to naturalization. | At least half the period, that is, thirty months, or 913 days, before filing. |
| Spouse of a citizen | Three years. | At least half the period. |
| Spouse of a citizen employed abroad | No statutory period required. | No statutory period required. |
Add to that a geographic requirement that goes unnoticed: you must have lived, for the three months before filing, in the state or USCIS district with jurisdiction over the case. Moving states on the eve of filing has cost many people months.
Trips, and the arithmetic they do on their own
This is what most often sinks applications from people who keep a life in two countries. The rule does not look at your intent in traveling, but at how long each absence lasted, one by one.
- An absence of more than six months, that is, more than 180 days, and less than a year: continuity of residence is presumed broken. It is a presumption, and rebuttable. It reaches both absences before filing and those occurring between filing and the oath.
- An absence of a year or more, that is, 365 days or more, in one stretch: it breaks continuity automatically. Without an N-470 approved beforehand, USCIS must deny the application for failure to meet continuous residence.
- Form N-470 preserves residence for people working abroad in qualifying employment, with the U.S. government, the private sector or a religious organization. It is an application made before leaving, not after returning.
Once continuity is broken, a new period of continuous residence must be built, and how long it lasts depends on the route by which you intend to naturalize. As a rule, the person becomes eligible again and may file at least six months before completing the required period.
The past that returns: how your green card was obtained
The statute requires you to show that you were lawfully admitted for permanent residence, under all the rules applicable at the time. The examination falls on the initial admission as a permanent resident, or on the moment you changed your situation to resident, and not on later entries.
English and civics: what is required
The naturalization exam has two parts. The first measures English, through the ability to read, write, speak and understand words in ordinary usage. The second measures knowledge of U.S. history and government, and is the civics test. There are two chances, the initial interview and a second one, and failing both leads to denial.
The English part, in three tests
- Speaking. There is no separate test. The officer assesses your ability to speak and understand from the answers you give to the interview's own questions, drawn from Form N-400. You need not understand every word of the form, and the officer must repeat and rephrase the question until concluding whether you understood or do not understand English.
- Reading. The officer presents three sentences, on a standardized form, and reading one of them correctly is enough. At the first correct reading, the test ends. You fail if you omit or substitute a content word, pause at length, or mispronounce to the point that the meaning does not come across.
- Writing. The officer dictates three sentences, and writing one understandably is enough. At the first correct one, the test ends. Errors of spelling, capitalization or punctuation do not fail you, unless they compromise the meaning. Abbreviating a dictated word, however, does fail, unless the officer approved the abbreviation.
The civics test, and the filing date decides which one
There are currently two civics tests in force at the same time, and what determines which applies to you is not the interview date but the date Form N-400 was filed. In both, 60% correct passes, and the officer ends the test as soon as the result is settled, one way or the other.
| Date Form N-400 was filed | Applicable test | How it works |
|---|---|---|
| Before 20 October 2025 | 2008 civics test | Bank of 100 questions. Ten are asked, and six must be correct. The officer stops at the sixth correct or the fifth wrong. |
| On or after 20 October 2025 | 2025 civics test | Bank of 128 questions. Twenty are asked, and twelve must be correct. The officer stops at the twelfth correct or the ninth wrong. |
Who is exempt, and from what
| Situation | Effect |
|---|---|
| Age 50 or older at filing, with at least 20 years of permanent residence | English requirement waived. The civics test still applies, and may be taken in the language you choose, with an interpreter. |
| Age 55 or older at filing, with at least 15 years of permanent residence | English requirement waived, on the same terms. |
| Age 65 or older at filing, with at least 20 years of permanent residence | Special consideration on the civics test, detailed below. The test may be taken in the language you choose, with an interpreter. |
| Medical disability, on Form N-648 | May waive English, civics, or both. |
The special consideration at 65 deserves detail, because it is the most advantageous and the least known. Someone entitled to it studies a reduced bank of 20 specially designated questions, answers 10 and passes with 6 correct. The reduced bank comes from the 2008 or the 2025 test, according to the filing date, by the same rule as the table above. Both conditions, age and length of residence, must be met on the day the application is filed.
Failing does not end the case immediately. USCIS reschedules you for a second interview, between 60 and 90 days after the first, and there the officer repeats only the part you failed: someone who passed speaking, reading and civics and failed writing redoes only the writing, on a different form from the one used before. A second failure, in any part, leads to denial. Refusing to take the test, or not answering, is treated as failure.
Beyond time and the exam, good moral character during the period and attachment to the principles of the Constitution are required. Those two requirements have their own detailed examination, which cannot be summarized without risk. Anyone with a record, however old or apparently minor, should address it before filing, not at the interview.
A deadline detail worth knowing
If USCIS requests additional evidence in a naturalization case, the deadline is short: the naturalization regulation sets thirty days, not the twelve weeks many people assume apply to everything. We cover this in detail on our RFE and NOID page.
Where cases usually fail
- Estimating physical presence instead of reconstructing trips with stamps, entry records and tickets.
- Adding up short absences and assuming the total is the problem. For continuous residence, what breaks it is the length of each individual absence, not their sum.
- Going over a year abroad without having applied for Form N-470 beforehand.
- Moving states in the three months before filing.
- Filing without rereading how permanent residence was obtained.
- Treating an old record as behind you, without analysis.
- Answering a request for evidence within the deadline you imagine, rather than the one written on the letter.
Legal basis
- INA § 316(a), on the general five-year period, physical presence and good moral character. INA § 318, on lawful admission for permanent residence. And INA § 319(a) and (b), on spouses of citizens.
- INA § 312, on the English and civics requirements, and § 312(b), on the exceptions by age and length of residence and the special consideration at 65.
- 8 C.F.R. part 316, on the general requirements. And 8 C.F.R. part 312, on the examinations, in particular § 312.1 on English, § 312.2 on civics and special consideration, and § 312.5 on the second interview.
- 8 C.F.R. § 335.3(b), on the minimum interval before the second interview, and § 335.7, on the deadline to respond to a request for evidence.
- Form N-470, on preserving residence in qualifying employment abroad, and Form N-648, on the medical disability exception.
- USCIS Policy Manual, volume 12, part D, chapters 2, 3 and 4, and part E, chapter 2, with a stated effective date of 18 August 2026.
- Content verified on 21 August 2026, and against the USCIS page on the 2025 civics test, revised on 17 September 2025. The test's numbers depend on the filing date, and the question bank is updated continuously: confirm at the source before the interview.
Verified on 21 August 2026 against chapters 2, 3 and 4 of part D and chapter 2 of part E, volume 12, of the USCIS Policy Manual, whose pages are stated as current to 18 August 2026, and against the USCIS page on the 2025 civics test, last reviewed 17 September 2025. The civics test figures depend on the filing date, and the question bank is updated on a rolling basis: confirm at the source before the interview.
General informational content. It is not legal advice and does not create an attorney-client relationship. Immigration rules change frequently and may be enjoined by a court. Before acting, confirm that the rule is in force and consult an attorney about your own circumstances.