This N-400 naturalization checklist covers residence, travel, taxes, Selective Service, the 2025 civics test, supporting documents, fees, and the citizenship interview.
Confirm the correct eligibility path
Before using this N-400 naturalization checklist, determine whether the application is based on the general five-year rule, the three-year rule for qualifying spouses of US citizens, or another naturalization provision.
Under the general rule, the applicant normally needs five years of continuous residence as a lawful permanent resident and at least 30 months of physical presence during that period.
A qualifying spouse of a US citizen may use the three-year rule when the applicable requirements are met. These generally include three years as a permanent resident, three years of marriage to the same US citizen, and living in marital union during the required period.
The US citizen spouse must also have held citizenship during the relevant period. Marriage alone does not automatically create eligibility for the three-year rule.
Calculate the filing date correctly
Eligible applicants under the five-year or three-year provisions may file the N-400 up to 90 calendar days before completing the required permanent-residence period.
The early-filing rule does not reduce the other requirements. Continuous residence, physical presence, state residence, marital conditions, and good moral character must still be satisfied.
Applicants should use the USCIS Early Filing Calculator rather than subtracting three calendar months from the anniversary date.
Filing more than 90 days early can lead to denial. The filing fee is generally not refunded after USCIS accepts and adjudicates an application.
Review continuous residence and physical presence
Continuous residence and physical presence are separate requirements.
Physical presence is calculated by counting the actual days spent inside the United States. The general five-year path requires at least 30 months in the country, while the qualifying three-year path requires at least 18 months.
An absence of more than six months but less than one year may create a presumption that continuous residence was disrupted. The applicant may provide evidence of continuing US residence.
An absence of one year or longer generally breaks continuous residence unless the applicant qualifies to preserve residence through an approved Form N-470 or another specific exception.
A reentry permit may help a permanent resident return after a long trip, but it does not automatically preserve continuous residence for naturalization.
Confirm state or district residence
Most applicants must reside for at least three months in the state or USCIS district where they file.
A recent interstate move can therefore affect the filing date. The applicant should confirm the residence requirement before selecting the address used on the N-400.
Every trip outside the country during the relevant period should be listed using exact departure and return dates. Passports, travel records, tickets, employment records, and other documents can help reconstruct missing information.
Review tax history
Applicants should check whether federal, state, and local tax filings are complete and consistent with the information provided on the N-400.
Claiming to be a nonresident for tax purposes, failing to file required returns, or owing taxes without an approved payment arrangement may generate questions.
IRS transcripts can help verify filing history. A taxpayer with missing returns or unresolved balances should work with a qualified tax professional before applying.
Taxes are part of the broader good-moral-character review, but one isolated tax issue does not produce the same result in every case. The facts and corrective actions matter.
Examine criminal and legal history
The N-400 asks detailed questions about arrests, citations, charges, convictions, alternative sentences, and other encounters with law enforcement.
An applicant should not assume that an old, dismissed, expunged, or minor incident can be omitted. The form and instructions should be followed carefully.
For certain minor traffic incidents, the instructions may not require court documentation when there was no arrest and the only penalty was a fine below the specified threshold. This does not necessarily eliminate the obligation to answer the form accurately.
Criminal history may affect not only naturalization but also the person’s permanent-resident status. Anyone with a potentially serious issue should obtain advice from a licensed immigration attorney before filing.
Check Selective Service obligations
Certain men who lived in the United States between ages 18 and 26 were required to register with the Selective Service System.
Failure to register may affect the good-moral-character analysis, depending on the applicant’s age, knowledge, status, and circumstances.
Applicants can verify registration through the Selective Service System. If no registration exists, a Status Information Letter and a written explanation may be relevant.
Do not wait automatically for a pending I-751
A conditional permanent resident who is otherwise eligible does not necessarily have to wait for Form I-751 approval before filing the N-400.
USCIS may adjudicate the I-751 before or concurrently with the naturalization application. Citizenship cannot be approved until the conditions on residence have been removed.
The applicant must remain eligible under the selected naturalization provision. A pending or complicated I-751 may affect the interview and evidence required.
Prepare for the 2025 civics test
Applicants who file Form N-400 on or after October 20, 2025, take the 2025 naturalization civics test.
The test uses a bank of 128 questions. The officer asks up to 20 questions, and the applicant must answer at least 12 correctly.
The English portion continues to evaluate speaking, reading, and writing, unless the applicant qualifies for an exemption or waiver.
Some civics answers change after elections or government appointments. Applicants should use the current official USCIS study materials rather than older lists found online.
Current filing fees
The general N-400 fee is $710 for online filing and $760 for paper filing under the current USCIS fee schedule.
A reduced paper-filing fee of $380 may be available to qualifying applicants based on documented household income. Some applicants may qualify for a complete fee waiver, while eligible military applicants can file without a fee.
Fee rules and income thresholds should be confirmed immediately before submission.
| Requirement | General five-year path | Qualifying spouse three-year path |
|---|---|---|
| Permanent residence | 5 years | 3 years |
| Physical presence | 30 months | 18 months |
| Continuous residence | 5-year period | 3-year period |
| Marriage requirement | None | Married to and living in marital union with qualifying US citizen |
| State or district residence | Generally 3 months | Generally 3 months |
| Early filing | Up to 90 calendar days | Up to 90 calendar days |
| Good-moral-character period | Generally 5 years | Generally 3 years |
Documents to organize before filing
The required documents depend on the individual case. A preparation file may include:
- Permanent Resident Card and extension notices.
- Current and expired passports.
- Complete international travel history.
- Marriage, divorce, and name-change documents.
- Tax transcripts and payment-plan records.
- Selective Service documentation.
- Court and police records when applicable.
- Child-support or alimony records when relevant.
- Evidence of living in marital union for the three-year path.
- Documents concerning long absences from the United States.
The applicant should retain a complete copy of the N-400 and supporting documents for interview preparation.
What happens after filing
USCIS issues a receipt notice and determines whether biometrics are required. Previously collected biometrics may sometimes be reused.
The applicant is then scheduled for a naturalization interview. The officer reviews the form, supporting evidence, English ability, and civics knowledge.
If the applicant fails part of the English or civics test, USCIS normally offers another opportunity to complete the failed portion within the applicable retest period.
An approved applicant does not become a citizen until taking the Oath of Allegiance and receiving the Certificate of Naturalization.
How D4U supports document organization
D4U is an international planning company that assists clients with administrative organization, document preparation, and international timelines. It is not a law firm and does not provide legal advice or representation.
D4U can help applicants identify missing records, organize travel and tax information, and prepare an administrative file for the naturalization journey.
The company reports an audited success rate above 91% and offers the commitment “your journey completed or your money back,” subject to contractual conditions and without guaranteeing naturalization.
Frequently asked questions
Can I file the N-400 before completing five years?
Eligible applicants under the general rule may file up to 90 calendar days before completing five years as permanent residents. The other requirements must still be satisfied.
Can I apply while my I-751 is pending?
Yes, if you are otherwise eligible. USCIS must adjudicate the I-751 before or concurrently with the N-400.
Does a reentry permit preserve continuous residence?
Not automatically. It can facilitate return after a long absence, but preserving residence for naturalization may require an approved N-470 and qualifying employment.
Which civics test applies in 2026?
Applicants who file on or after October 20, 2025, take the 2025 civics test: up to 20 questions from a bank of 128, with 12 correct answers required.
Do I need to disclose an expunged arrest?
The N-400 asks broad questions about arrests, citations, and charges. Applicants should answer accurately and obtain legal advice when an incident may affect eligibility.
Can I apply if my Green Card is expiring?
An expiring card does not by itself end permanent-resident status. The N-400 receipt may extend evidence of card validity under current USCIS procedures, but the applicant should follow the instructions on the notice.
When can I apply for a US passport?
After completing the oath ceremony and receiving the Certificate of Naturalization. Passport processing times should be checked directly with the Department of State.
Talk to the D4U team and start your international journey.
