Naturalization, Explained

What Is Naturalization?
Naturalization is the process through which an immigrant to the United States of America can become a U.S. citizen. Only certain immigrants are eligible: those who either have been green card holders (permanent residents) for 3β5 years or meet various military service requirements.
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Is naturalization the same as citizenship?
Naturalization and citizenship are related but not exactly the same.
- Citizenship refers to the status of being a recognized member of a country, either by birth or through other means.
- Naturalization is the process by which a non-citizen can become a citizen after meeting specific legal requirements, such as residency, language proficiency, and passing a citizenship test. So, while naturalization leads to citizenship, it is the process of acquiring it rather than the status itself.
Becoming an American citizen comes with many advantages, and it also means taking on new responsibilities.
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How Long Does it Take to Get Citizenship in the U.S.?
From the time you file your citizenship application to when you attend the Oath of Allegiance ceremony, is currently 5.5 months. Learn more about how long it takes to get citizenship after applying.
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Boundless can guide you through every milestone of the naturalization process, starting with your citizenship application all the way to the finish line. Learn more.
Naturalization Cost
How much does it cost to apply for citizenship?
The current government filing fee for naturalization (citizenship) applications is $760.
Military applicants are exempt from the application filing fee (see our detailed guide to naturalization costs).
USCIS also offers a $50 discount if you file your N-400 online, rather than by mail.
Eligibility for Naturalization
Eligibility for naturalization generally depends on a number of factors:
- How long youβve had your green card
- How long youβve physically lived in the United States
- Whether youβve served in the U.S. military (and if so, whether your service was during βpeacetimeβ or βwartimeβ β see FAQs below for an explanation of these terms)
The following table summarizes the most common groups of individuals who are eligible to apply for U.S. citizenship, and when they can apply, followed by a more detailed explanation below:
* Consecutive or otherwise; any period of military service counts as having physically lived in the United States.
** A discharge designated βGeneral-Under Honorable Conditionsβ is considered βhonorableβ discharge for naturalization purposes.
- If youβre a green card holder with no special circumstances, you can apply for United States citizenship at least five years after obtaining your green card. You also must have physically lived in the U.S. for at least 30 months (two-and-a-half years) out of those five years.
- If youβve been married to a U.S. citizen for at least three years and lived with your spouse that entire time, you can apply to become a United States citizen at least three years after obtaining your green card. You also must have physically lived in the United States for at least 18 months (one-and-a-half years) out of those three years, and your spouse must have been a U.S. citizen for at least three years.
- If youβre the widow or widower of a U.S. citizen who died while honorably serving in the U.S. military (and you were living with them at the time of their death), you can apply for U.S. citizenship at any time β as long as youβre a green card holder at the time of your citizenship interview. You need not have held a green card for a certain number of years or have physically lived in the United States for any number of months prior to applying.
- If youβve served in the U.S. military for at least one year during peacetime, you can apply while in active duty or within six months of separating honorably from the military. You need not have held a green card for a certain number of years or have physically lived in the United States for any number of months prior to applying to become a naturalized citizen.
- If youβve served in the U.S. military for less than one year during peacetime, you can apply for U.S. citizenship five years after obtaining your green card (honorable service within this five-year period can count toward that required time, as well). You also must have physically lived in the United States for at least 30 months (or two-and-a-half years) out of those five years.
- If youβve served in the U.S. military for at least one year during peacetime and are filing after six months of separating honorably from the military, you can apply to become a United States citizen five years after obtaining your green card (honorable service within this five-year period can count toward that required time, as well). You also must have physically lived in the United States for at least 30 months (two-and-a-half years) out of those five years.
- If youβve served in the U.S. military for any period during wartime, you can apply anytime and need not be a green card holder. You (or your military spouse) must only have been physically present in the United States (including U.S. territories) or aboard a U.S. vessel when you enlisted, re-enlisted, extended your service, or were inducted into the military. You need not have held a green card for a certain number of years (if you have one) or have physically lived in the United States for any number of months prior to applying for citizenship.
Naturalization Requirements
In addition to waiting three or five years after getting your green card (unless youβre applying for citizenship based on qualifying military service), you must also satisfy the following requirements to proceed with the naturalization process to become a United States citizen:
- You must be at least 18 years old.
- You must have lived continuously in the United States as a green card holder for at least five years, or three years if married to a U.S. citizen.
- You must have been a resident of the state where you plan to apply for citizenship for at least three months.
- You must have βgood moral character,β broadly defined as character that measures up to the standards of average citizens in your community. More specifically, however, it means you did not have certain types of crimes β such as murder, illegal gambling, or intentionally lying to the U.S. government in order to gain immigration benefits β on your record at any time before filing, and you did not lie during your naturalization interview. Whether an applicant meets this requirement is decided by the government on a case-by-case basis.
- You must pass a two-part naturalization test: the first is an English language test (covering reading, writing, and speaking skills) and the second a civics test (covering knowledge of U.S. history and government).
- You must be willing to serve in the U.S. military or perform civilian service for the United States if called upon to do so.
- You must register with the Selective Service System if you are male and have lived in the United States between the ages of 18 and 25.
For more information, check out the Boundless guide on requirements for U.S. citizenship.
How to Apply for U.S. Citizenship
The following is a brief overview of the naturalization process. Make sure to also check out our detailed guide to the U.S. citizenship timeline to help you understand when each stage of the naturalization process takes place.
Step 1: Application for naturalization
The first step to becoming a U.S. citizen is to file an Application for Naturalization (Form N-400) and pay the filing fee (unless you are exempt β see above for details). You may fill out and mail a paper application or complete the application online. If you file online, you must first create an online account with U.S. Citizenship and Naturalization Services (USCIS).
If youβre applying based on your military service, from abroad, or for a fee reduction or waiver, you may not complete your application online. You must mail your application to the appropriate USCIS office.
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Step 2: Biometrics appointment
The next step is to set up your biometrics appointment β basically, getting your fingerprints taken β at your local USCIS field office. As with the family-based green card process, USCIS will take your fingerprints during naturalization in order to conduct a background check. The fingerprinting appointment usually takes place about a month after USCIS receives your U.S. citizenship application.
Step 3: Citizenship interview and exam
The interview
The citizenship interview is usually scheduled around 14 months after filing your application. Exactly how long it will take to process your naturalization application, however, depends heavily on the USCIS field office handling your case, which is assigned to you based on your ZIP code.
During the citizenship interview, a USCIS officer will verify that all of the information on your naturalization application is correct. The interview usually takes place at the nearest USCIS office. If you are applying from abroad, you will attend the interview at a U.S. embassy or consulate. If you are in active military duty, your interview may be held at a military facility.
The exam
The citizenship interview is also referred to as a citizenship βexamβ because, at the same time, the USCIS officer will also give you a two-part naturalization test (unless you qualify for an exemption): The first component, an English language test, will evaluate your written and spoken English skills. The second, a civics test, will assess your knowledge of U.S. history and basic information about how the U.S. government works. (Check out our detailed guide to the naturalization exam, which includes helpful preparation tips, as well as our guide to the civics test questions.)
But donβt panic! These tests are fairly basic, and USCIS provides study materials to help you prepare. Youβll also have two chances to take the tests per application: once during your interview and again at a later date to retake any portion that you didnβt pass the first time.
If you pass the interview and exam, the USCIS officer will approve your application at the end of the interview. In some cases, USCIS may ask you for additional documentation or schedule a second interview.
If you do not pass, USCIS will send you a denial letter explaining why, but you may appeal their decision within 30 days of receiving the letter or reapply. A USCIS policy on denied applications taking effect on September 11, 2018 underscores the importance of completing the naturalization application and meeting all requirements correctly the first time.
Step 4: Oath of Allegiance
Youβre almost finished! Once your application is approved, you will attend an Oath of Allegiance ceremony. Itβs very important that you complete this step. You are not a U.S. citizen until you have taken the Oath of Allegiance.
After your citizenship interview, youβll receive a notice in the mail with the date, time, and location of the ceremony (usually a local courthouse or USCIS office). The time it takes to schedule the ceremony varies by state.
Youβll be asked to return your green card when you check in. Once the ceremony is over, youβll receive a Certificate of Naturalization and begin your life as a U.S. citizen!
Let Boundless be your immigration go-to, guaranteed approval or your money back. Learn more about what Boundless can do to help.
Benefits of Naturalization
Once you officially receive your Certificate of Naturalization and are a U.S. citizen, youβll have access to a number of benefits that were previously unavailable to you as a green card holder. In this section, weβll touch on a few of these.
- Voting rights: As a green card holder, you may have been able to vote in certain local municipalities, but with a Certificate of Citizenship, you can make an impact on the national stage by casting your vote in federal elections.
- Eligibility to run for office: To be eligible for candidacy in U.S. elections, you must be a citizen, which means, with a Certificate of Naturalization, you can run for office.
- No more immigration forms: Moving forward, you wonβt need to go through the rigamarole of filing forms with USCIS. That means no more filing fees, no more green card renewals or replacements, and no more having to check in with the U.S. government whenever you decide you want to move.
- New employment opportunities:Under U.S. law, only U.S. citizens may be hired to work for the U.S. government. While income levels vary, federal employees are generally paid more and have greater benefits than their private-sector counterparts.
- Greater access to government assistance programs: As a green card holder, you have limited access β if any β to federal programs like Social Security and Medicare. But with a Certificate of Naturalization, youβll no longer face these restrictions. You can even, in certain cases, apply for federal college assistance, which is reserved solely for U.S. citizens.
- No more deportations: Just as with any U.S. citizen, you cannot be forcibly removed from the United States. This is true even if youβre convicted or arrested. A naturalized citizen can only be deported if they are first stripped of their citizenship β which is very rare. For this to occur, the initial application must have been fraudulent in some way.
- Ability to sponsor relatives seeking immigration status: With a Certificate of Naturalization, you can sponsor any siblings, parents, or adult children who wish to apply for lawful permanent residence in the United States.
- Automatic citizenship for children: Once youβre naturalized, your children will automatically obtain citizenship, even if theyβre born abroad. If your child is born outside the United States, be sure to notify the U.S. embassy or consulate.
- The power of the U.S. passport: As a citizen of the United States, youβre entitled to a U.S. passport, which comes with a number of benefits. For starters, youβll have visa-free access to over 180 countries and territories throughout the world, and if, while abroad, you find yourself in an emergency, youβll be able to contact the local U.S. consulate or embassy. Youβll also have near-complete freedom to travel the globe, as the U.S. government places no restrictions on the duration or frequency of trips abroad. (Note: itβs always a good idea to check the specific visa requirements for any given country before making travel arrangements.)
Boundless offers unlimited support from our team of immigration experts, so you can apply with confidence and focus on whatβs important, your life in the U.S. Learn more.
Special Considerations
Before you begin your journey toward U.S. citizenship, itβs important to understand the basic responsibilities of being an American citizen. Some of the most important duties include the following:
- You may be required to renounce your citizenship in other countries. Depending on your home countryβs rules for dual citizenship (being a citizen of two countries at the same time), you may need to give up your current citizenship upon becoming an American. The United States permits dual citizenship, but it requires U.S. nationals to use their U.S. passports when traveling in and out of the United States. Many countries β Australia, Canada, and the United Kingdom, for instance β also allow you to be a national of another country. India, Japan, and a number of others, however, require you to relinquish your citizenship in those countries once you become an American. Itβs best to check your home countryβs policy on dual nationality before applying for naturalization if you intend to maintain your citizenship in that country.
- You may be called upon to serve in the military. Mandatory military service enforced by a draft was officially discontinued in 1973. If reinstated, however, you could be drafted to serve. Any male who is a U.S. citizen or green card holder and has lived in the United States between the ages of 18 and 25 must register with the Selective Service System.
- You may need to serve on a jury. In the United States, jury duty in a legal proceeding is mandatory. If summoned, you must attend, but you may not necessarily serve. Only those who are selected by the judge and attorneys after being summoned will actually serve on the jury. Active-duty military service members, professional fire and police department workers, and some public government officers who serve full time in their positions are exempted from federal jury duty. Individuals who have served on a federal jury in the past two years, are aged 71 and older, or are volunteer first responders generally may request to be excused from service, but policies vary by district court. State and local courts impose their own rules but generally also exempt individuals based on age, disability, or their positions in public office.
- You must file U.S. income tax returns for life β no matter where you live. As a U.S. citizen, even if you move abroad, you must still file U.S. income tax returns. As long as you meet certain requirements, though, youβll be able to exclude from your income up to the yearly limit β currently over $100,000 β allowed by the U.S. government, meaning it wonβt be taxed. Any income that exceeds that limit will generally be taxed.
- Your criminal history will be heavily scrutinized. If youβve committed a crime that could make you deportable β such as immigration fraud, drug abuse, or domestic violence β itβs especially important to seek legal assistance before applying for naturalization.
Related Information
Important Update (August 2025):
USCIS has announced two major changes to the naturalization process:
- Good Moral Character: Officers will now consider both positive contributions (like community involvement and tax compliance) and certain minor infractions or questionable behavior when deciding if applicants meet this requirement. This means more scrutiny and a broader review of each applicantβs background.
- Neighborhood Checks: USCIS has reinstated in-person βneighborhood checksβ for the first time in 34 years. Officers may contact an applicantβs neighbors, coworkers, or employer to confirm eligibility. Submitting testimonial letters with your application may help avoid delays.
What is the fastest way to naturalize?
The quickest path to U.S. citizenship is marrying a U.S. citizen. If youβre a green card holder married to a U.S. citizen, you can apply for naturalization after just three years of permanent residency instead of the usual five. Members of the U.S. armed forces may also qualify for expedited naturalization, sometimes waiving the residency requirements entirely.
90-Day Early-Filing Rule
You may submit your N-400 to USCIS as early as 90 days before reaching your three- or five-year wait period as a green card holder β as long as youβve satisfied all other eligibility requirements. You must still wait the full three or five years, however, to become a U.S. citizen. Filing early just lets you get ahead in the application process. (Our guide to the Form N-400 has the full details.)
Important Update (August 2025):
USCIS has announced two major changes to the naturalization process:
- Good Moral Character: Officers will now consider both positive contributions (like community involvement and tax compliance) and certain minor infractions or questionable behavior when deciding if applicants meet this requirement. This means more scrutiny and a broader review of each applicantβs background.
- Neighborhood Checks: USCIS has reinstated in-person βneighborhood checksβ for the first time in 34 years. Officers may contact an applicantβs neighbors, coworkers, or employer to confirm eligibility. Submitting testimonial letters with your application may help avoid delays.
What is the fastest way to naturalize?
The quickest path to U.S. citizenship is marrying a U.S. citizen. If youβre a green card holder married to a U.S. citizen, you can apply for naturalization after just three years of permanent residency instead of the usual five. Members of the U.S. armed forces may also qualify for expedited naturalization, sometimes waiving the residency requirements entirely.
90-Day Early-Filing Rule
You may submit your N-400 to USCIS as early as 90 days before reaching your three- or five-year wait period as a green card holder β as long as youβve satisfied all other eligibility requirements. You must still wait the full three or five years, however, to become a U.S. citizen. Filing early just lets you get ahead in the application process. (Our guide to the Form N-400 has the full details.)
Important Update (August 2025):
USCIS has announced two major changes to the naturalization process:
- Good Moral Character: Officers will now consider both positive contributions (like community involvement and tax compliance) and certain minor infractions or questionable behavior when deciding if applicants meet this requirement. This means more scrutiny and a broader review of each applicantβs background.
- Neighborhood Checks: USCIS has reinstated in-person βneighborhood checksβ for the first time in 34 years. Officers may contact an applicantβs neighbors, coworkers, or employer to confirm eligibility. Submitting testimonial letters with your application may help avoid delays.
What is the fastest way to naturalize?
The quickest path to U.S. citizenship is marrying a U.S. citizen. If youβre a green card holder married to a U.S. citizen, you can apply for naturalization after just three years of permanent residency instead of the usual five. Members of the U.S. armed forces may also qualify for expedited naturalization, sometimes waiving the residency requirements entirely.
90-Day Early-Filing Rule
You may submit your N-400 to USCIS as early as 90 days before reaching your three- or five-year wait period as a green card holder β as long as youβve satisfied all other eligibility requirements. You must still wait the full three or five years, however, to become a U.S. citizen. Filing early just lets you get ahead in the application process. (Our guide to the Form N-400 has the full details.)
Apply for U.S. citizenship with confidence
RapidVisa, a Boundless company, offers fast, reliable naturalization support with a 99.7% success rate and a money-back guarantee.
Ready to become a U.S. citizen?
RapidVisa, a Boundless company, makes filing your naturalization application easy, with personalized support from start to finish.
Apply for U.S. citizenship with confidence
RapidVisa, a Boundless company, offers fast, reliable naturalization support with a 99.7% success rate and a money-back guarantee.
Ready to become a U.S. citizen?
RapidVisa, a Boundless company, makes filing your naturalization application easy, with personalized support from start to finish.
Naturalization FAQs
A naturalized citizen is a person who was born outside the United States and obtained U.S. citizenship. Only immigrants who have been lawful permanent residents for 3-5 years or meet certain military service requirements are eligible.
Naturalization is a process. Citizenship is a status. Naturalization is the process by which an immigrant becomes a U.S. citizen after meeting certain requirements, while citizenship applies to anyone who is a United States citizen, regardless of whether they were born within the U.S. or outside the U.S.
Obtaining citizenship after having a green card is the most common route for the vast majority of naturalization applicants, although certain foreign-born military members or veterans may also be eligible.
βPeacetimeβ refers to any point in time. βWartimeβ refers specifically to the following periods:
- World War I (April 6, 1917βNovember 11, 1918)
- World War II (September 1, 1939βDecember 31, 1946)
- Korean War (June 25, 1950βJuly 1, 1955)
- Vietnam War (February 28, 1961βOctober 15, 1978)
- Persian Gulf War (August 2, 1990βApril 11, 1991)
- War on Terrorism (September 11, 2001βpresent)
Although peacetime naturalization is always an option for any applicant with at least one year of military service, anyone eligible for wartime naturalization would almost certainly choose that path instead.
Depending on the complexity of your case, or if you simply want additional peace of mind during the process, it may be helpful to enlist an immigration lawyerβs expertise for your citizenship application. Lawyers can help you navigate the naturalization process with confidence and help you respond to government requests. Boundless put together a detailed guide on when to hire an immigration lawyer here.
If you are in the U.S. on a visa, you cannot directly apply for citizenship. You must first obtain a green card (permanent residency) and then meet the eligibility requirements for naturalization, including the required residency period. Once you meet these criteria, you can apply for citizenship.
If you have been outside the U.S. for long periods while holding a green card, it may affect your eligibility for naturalization. Continuous residence in the U.S. is a requirement, and extended absences can interrupt your residency. You may need to provide evidence of your intent to reside in the U.S. permanently to demonstrate continuous residence.
Yes, one of the requirements for naturalization is demonstrating basic knowledge of the English language. This includes the ability to read, write, and speak in English. However, there are exemptions for individuals over a certain age or with certain disabilities. You will need to take a simple English test during your citizenship interview unless youβre exempt.
While it is rare, you can lose your U.S. citizenship if you voluntarily give it up or if you are found guilty of certain actions like committing treason against the U.S. or fraudulently obtaining citizenship. U.S. citizenship is a permanent status unless revoked under specific legal circumstances.





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