Becoming a US citizen is the last step in a green-card holder's immigration journey, and it is applied for with Form N-400. This guide covers how naturalization works from the officer's perspective: who qualifies, how continuous residence and physical presence are calculated, which version of the English and civics test is current, what good moral character covers, and how the process runs from filing to the oath. The guide focuses only on the naturalization of green-card holders; birthright and derivative citizenship and dual citizenship are separate topics. We summarize the attorney support on our N-400 attorney service. It is general information, not legal advice.
N-400 Eligibility Requirements
Naturalization requires several core elements together. At the time of filing you must be at least eighteen years old and a green-card holder. The general rule is that you must have been a green-card holder for five years; if you are married to and living with a US citizen throughout that time, the period drops to three years. In addition, you are expected to have resided for the three months before filing in the state or USCIS district where you file. There is also a convenience: you can file up to ninety days before the five- or three-year period is complete. Alongside these, continuous residence, physical presence, good moral character, English and civics, and attachment to the Constitution are required; we cover each below.
Continuous Residence and Physical Presence
The two concepts are often confused but are different. Continuous residence means keeping the US as your main home since you received your green card; a trip abroad of more than six months creates a rebuttable presumption that residence was broken, and a trip of more than one year generally breaks it unless there is an exception such as an approved N-470. Physical presence is a separate count: you must have been physically present in the US for at least thirty months on a five-year application, or at least eighteen months on a three-year application. Because long or frequent trips can affect both requirements, your travel history should be assessed carefully before filing. You can review the detail of the rules on the USCIS continuous-residence page. If you plan to stay abroad for a long time, we build the timing of the process accordingly.
The English and Civics Test: The Current Version
A naturalization application requires the ability to read, write, and speak English and to pass a civics test. What decides which version of the civics test you take is not the interview date but the filing date. If you filed your application on or after October 20, 2025, you are subject to the 2025 test: 20 questions are asked from a pool of 128, and 12 correct answers are needed to pass. If you filed before that date, you are subject to the older 2008 test: 10 questions from a pool of 100, and six correct are enough. Because the test content and thresholds can change over time, you should verify the current version and question list on the official USCIS 2025 civics test page before starting to study. If you want support preparing for the interview, our citizenship interview preparation service handles that separately.
Test and Language Exemptions
There are rules that ease the test burden for older, long-term green-card holders. If at the time of filing you are fifty years old and have held a green card for twenty years, or fifty-five and have held one for fifteen years, you are exempt from the English test; you still take the civics test, but you may take it in your own language with an interpreter you bring. If you are sixty-five and have held a green card for twenty years, you take the test with special consideration, using fewer questions from a marked subset. In addition, if a medical disability prevents you from meeting the English or civics requirement, an exemption can be requested with Form N-648. We assess together which exemption fits your situation.
Good Moral Character
Naturalization requires you to be a person of good moral character. The statutory assessment period is five or three years, but the officer can weigh older conduct where relevant. Certain crimes create permanent or conditional bars; a misrepresentation, unpaid taxes or a failure to file, a child-support debt, and, for male applicants, the absence of a Selective Service registration can affect the file. A policy that took effect in 2025 turned this assessment from a mechanical checklist into a holistic approach and highlighted tax compliance in particular; positive factors and negative conduct are weighed together. An important caution: even expunged or old records must be disclosed, because hiding an incident usually leads to a heavier result than the incident itself.
The N-400 Application Process Step by Step
The application is filed with Form N-400, online or on paper. As of mid-2026, the fee is $760 for a paper filing and $710 for an online filing, and the biometrics fee is included. For low-income applicants, a full fee waiver (Form I-912) and a reduced fee of $380 (Form I-942) are available; applications requesting a waiver or reduction must be filed on paper. In June 2026 a rule was proposed that would markedly raise the fee and remove the waiver and the reduction, but that rule is not yet in effect; you should verify the current fee on the USCIS N-400 page before filing. After filing come a biometrics appointment, a review of the file, and an interview notice. Because processing times vary by local office, rather than give an exact date we check the current picture together using USCIS's processing-time tool.
The Interview, the Decision, and the Oath of Allegiance
At the interview, the officer reviews your application with you and administers the English and civics test. The result can be an approval, a request for more documents, or a denial; if the officer sees a missing document, they may request more information with Form N-14. When you are approved, the last step is the Oath of Allegiance; your citizenship is completed with this oath. The oath includes a renunciation of prior allegiances; this has meaning for the US process, but it does not by itself decide the fate of your other citizenship. Whether your other citizenship continues depends on the law of your own country; Türkiye generally allows dual citizenship, but for the detail you should see our dual citizenship page. We make no promise here about Turkish law.
Common Denial and Delay Reasons
Naturalization files usually get stuck at a few points. The most common problem is a gap in continuous residence or physical presence; long trips can break the five-year clock. The second is issues with good moral character: a past crime, unpaid taxes, a misrepresentation, or the absence of a Selective Service registration. The third is failing the test or coming to the interview unprepared. The fourth is missing or inconsistent documents. If your application is denied, in most cases an administrative appeal is available with Form N-336; our N-336 appeal service handles that process. The prevention is the same: assess eligibility carefully before filing and build the file around the question the officer will ask.
Prepare Your N-400 Application With Yellow Law Group
In naturalization, the right decision is often reading your eligibility and your risks correctly before you file. Yellow Law Group, from its headquarters in Plano (Texas) and offices in Chicago (Illinois), Irvine (California), Alpharetta (Georgia), and Fairfield (New Jersey), assesses your eligibility and sensitive points such as travel, taxes, or a past record before filing, prepares the N-400 file and the evidence, guides you according to the current test version, and stands with you at the interview when needed. We move the process in line with current developments, in Turkish and English. You can review our attorneys on our team page and schedule a free initial consultation through our contact page.
