Immigration Topics Explained:

U.S. Citizenship through the Naturalization Process

Naturalization Explained

What is a naturalized citizen?

The process in which a person not born in the United States voluntarily becomes a U.S. citizen is called naturalization. For foreign-born persons, naturalization is the most common way to become a citizen in the U.S. To become a naturalized citizen, applicants generally must be permanent residents of the United States and meet several other eligibility criteria. Currently, there are an estimated 8.9 million permanent residents who are eligible to naturalize.

In addition to birth in the United States and naturalization, there is one other way to become a citizen of the United States. Certain foreign-born individuals may have to claim to citizenship through their parents. The may automatically become citizens at birth or after birth (but before the age of 18). To learn more, view our page on U.S. Citizenship through Parents.

The following describes in general terms the process to obtain naturalized citizenship in the U.S. If you’re ready to get started with the application, skip to how CitizenPath can help.

U.S. Citizenship Requirements

Who is eligible to apply for citizenship?

You must meet certain requirements before you are eligible to become a naturalized citizen. Generally, you must be a permanent resident who is at least 18 years old. Select a card below to review the citizenship requirements for each eligibility category:

5-Year Permanent Resident

Most green card holders are eligible to naturalize after five years as a lawful permanent resident.
Learn about theGeneral Provision

Married to a U.S. Citizen

If you’re a permanent resident who is married to a U.S. citizen, you may be eligible to naturalize after just three years.
Learn about theMarriage Provision
U.S. armed forces basis for naturalization

U.S. Armed Forces

If you've served at least one year in the U.S. military during certain periods, you may be eligible to naturalize now.
Learn about theMilitary Provision

If you are applying based on five years as a permanent resident or based on three years as a permanent resident married to a U.S. citizen, you may file the application up to 90 days before you meet the “continuous residence” requirement. You must meet all the other requirements at the time that you file your application with USCIS.

The vast majority of applicants fall into one of the categories above. That said, there are additional eligibility categories.

Citizenship Application

How do I apply to become a naturalized citizen?

If you want to become a U.S. citizen through the naturalization process, the first step is to file Form N-400, Application for Naturalization. This form is the official application that puts you on the path to becoming a naturalized citizen. Preparing the form correctly and including the right supporting documents is critical to avoid delays.

You can follow the detailed instructions provided by USCIS, or you can make the process easier by using CitizenPath. Our online service was created by immigration attorneys and is backed by live customer support. CitizenPath's Naturalization Application Package helps you prepare Form N-400 quickly and accurately, reducing the chance of costly mistakes that can lead to rejections or denials. What's more, we even guarantee USCIS approval.

Review the N-400 checklist that will help you gather some of the necessary information to prepare the naturalization process.
N-400 CHECKLIST

Application for Naturalization Fees

How much does it cost to become a U.S. citizen?

Applying for citizenship through naturalization involves both government filing fees and optional preparation costs. USCIS sets the filing fee for Form N-400, while services like CitizenPath can help applicants avoid costly mistakes at a fraction of the price of an attorney.

N-400 Filing TypeUSCIS FeeCitizenPath Cost
File by mail$760
$199
File online or upload PDF$710
$199
File by mail with reduced fee$380
$199
File by mail with fee waiver$0
$199

Delaying naturalization can be more expensive than applying. Permanent residents must renew their green cards about every 10 years at a cost of $465 per renewal. Over time, these renewal fees quickly exceed the one-time cost of citizenship. CitizenPath’s Citizenship Cost Calculator helps show how waiting can cost more in the long run.

Reduced Fee Option

Applicants with household income between 150% and 400% of federal poverty guidelines may qualify for a reduced fee of $380. This option is available only through paper filing and requires supporting documentation. CitizenPath's service will help you determine if you qualify for this reduced naturalization fee.

Full Fee Waiver

Some applicants can request a complete fee waiver by filing Form I-912. This is possible if you receive means-tested benefits, earn less than 150% of the poverty level, or face serious financial hardship. A waiver cannot be combined with the reduced fee request. We cannot help you prepare Form I-912 at this time.

U.S. Naturalization Processing Time

How long does it take to become a U.S. citizen?

The USCIS historical average processing times for the naturalization process improved to 5-7 months under the Biden administration. That said, with new policy changes from the Trump administration, we do expect processing times to increase. You will attend three separate appointments, namely:

  1. Biometric Screening: USCIS mails you an appointment notice for a biometric screening. At the Application Support Center, they collect your photo, fingerprints, and signature. This information is used to complete a mandatory criminal background check.
  2. Naturalization Interview: Several months later, USCIS schedules a naturalization interview. A USCIS officer reviews your application, confirms your answers, and checks for any changes to your eligibility. The interview usually lasts 15–30 minutes.
  3. Oath Ceremony: If USCIS approves Form N-400, you’ll be invited to an oath ceremony. Taking the Oath of Allegiance is the final step in the naturalization process. Once completed, you officially become a naturalized citizen.

See our naturalization processing time line for a detailed overview at each stage.

Preparing for the U.S. Citizenship Test & Interview

Is the citizenship test and interview difficult?

Study materials have made it easier than ever to take the test to become a naturalized citizen. For instance, at the naturalization interview, the USCIS officer will give you a short English and civics test. If you know what to study, this can be easy for most everyone to pass. There are several free resources to help you get ready for the tests.

English Test Practice

You will only be expected to read, write, and understand simple vocabulary and use basic grammar. You can study from a list of likely vocabulary words.
STUDY NOW

History/Civics Test Practice

You’ll be asked several civics questions about U.S. history and government, and must answer most of them correctly to pass. Prepare using an official list of practice questions.
STUDY NOW

For older permanent residents (age 50 or more) or applicants with medical disabilities, there are also several exemptions for the test.

Oath Ceremony

What happens at an oath ceremony?

The oath ceremony is the final step in the naturalization process. At the ceremony, you’ll return your green card, take the Oath of Allegiance, and receive your naturalization certificate. From that moment, you are officially a naturalized citizen of the United States. In total, most people should expect to spend 1 to 2 hours at the event.

Naturalization Certificate

Will I receive a U.S. passport at the ceremony?

At end end of the oath ceremony, USCIS issues you a Certificate of Naturalization. This official document proves you are a U.S. citizen. It is an essential record for many benefits, including applying for a U.S. passport, sponsoring family members for immigration, and updating your Social Security records. Always keep your naturalization certificate in a safe place — it serves as your primary proof of citizenship.

Dual Citizenship

Does the U.S. allow dual citizenship?

When you naturalize as a U.S. citizen, the United States allows you to hold dual citizenship. This means you may keep your original nationality while enjoying the rights of a U.S. citizen. Nonetheless, some countries do not recognize dual citizenship and may require you to give up your prior nationality. Check the laws of your home country to understand how naturalization will affect your status.

Form N-400, Application for Naturalization

Use Form N-400 (Application for Naturalization) to apply for U.S. citizenship through naturalization. Each year, USCIS rejects or denies thousands of N-400 applications. Therefore, it's important to get it right.

each year an average of
1
N-400 applications are filed*
out of these
1
get rejected*
and another
1
get denied*

How CitizenPath Helps You Through the Naturalization Process

How to become a naturalized citizen with the peace of mind you've done everything correctly

Our affordable, online service makes it easy to prepare Form N-400 online. You’ll answer simple questions at your own pace, and we’ll check for eligibility — including continuous residence, physical presence, and other key criteria — before you pay. You'll get a ready-to-file application and personalized filing instructions. There's even live customer support and a money-back guarantee that USCIS will approve the application. Learn more about the Naturalization Package >>

STEP
1
Check Eligibility
No signup required.

We're going to ask you a few questions to make sure you're eligible and preparing the correct form.

STEP
2
Prepare Form N-400
There’s no obligation to purchase.

Our software will guide you through the naturalization application using simple step-by-step instructions.

STEP
3
Download, Print and File
Pay only $199 + USCIS fees.

Once you're completely satisfied, you’ll be able to print your N-400 and customized filing instructions.

CitizenPath Naturalization Package to become a naturalized citizen
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