N-400 Application for Naturalization
File your N-400 online, with 22 checks before USCIS sees it
Every question on Form N-400 in plain English, your physical-presence days counted for you, and a report of what would get you rejected. You read the report before you pay.
No account, no card. Money-back guarantee.
- 22 pre-filing checks
- Document list from your answers
- Money-back guarantee
Last updated
- Price temporarily unavailableAll-inclusive price
- 22Pre-filing checks
- 100%Money-back guarantee
- TailoredEvidence checklist
Eligibility paths
Which naturalization path are you on?
Immiva handles all three. The free eligibility check confirms which one is yours and when you can file.
- 01
Five years as a green card holder
The standard route. You have held your green card for at least five years and met the residence rules.
MOST COMMONCheck eligibility - 02
Three years married to a citizen
You have held your green card three years, been married to a U.S. citizen that whole time, and lived with them.
FASTER ROUTECheck eligibility - 03
Military service
Current and former members of the armed forces get a shorter path and skip some of the usual requirements.
EXPEDITEDCheck eligibility
What you get
Everything you need to file the N-400 correctly
You answer questions. We handle the USCIS formatting, the error checking, and the document list.
- FLAGSHIP
22 checks before you file
Residence math, the oath questions, good moral character, your history, and every blank field. Each check shows pass, review, or fix, with what to do about it.
Plain-English questions
Every N-400 question rewritten in everyday words, so you are not decoding legal jargon or guessing what USCIS means.
Physical presence calculator
Enter your trips. We count the days and tell you the earliest date you can safely file.
Your document list
The evidence USCIS wants for your situation and your filing category, not a generic checklist.
How it works
Prepare your N-400 in four steps
Most people finish in one sitting. You can stop and come back, and nothing is lost.
Check you qualify
Answer a few questions about your green card, your travel, and your marriage. Free, and no account needed.
Answer the questions
Work through the N-400 in plain English. We save as you go and explain anything that is unclear.
Read your report
See all 22 checks, what passed, what needs your attention, and how to fix it. Still free at this point.
File it
Download your finished N-400 and your document list. File online through your USCIS account, or print it and mail it.
Pre-filing audit
See every check before you file
Every N-400 runs through the same 22 checks. You see the full report, every flag and every fix, before you pay anything.
Eligibility math
- Continuous residence
- Physical presence, counted in days
- Age at filing
- Three months in your USCIS district
Allegiance and oath
- Attachment to the Constitution
- Oath of Allegiance
- Willingness to serve
- Renouncing foreign titles
Good moral character
- Criminal history
- Unlawful acts
- Fraud and false statements
- Persecution and human rights
- Terrorism, weapons and security
- Tax and financial obligations
- Selective Service and military
- Unlawful voting and benefits
Your history
- Removal and deportation
- Employment history
- Address history
- Green card status
Form integrity
- Required fields complete
- Field content validation
Compare your options
Three ways to file your N-400
What you get, what it costs, and where each option leaves you.
Swipe to compare all three
| Feature | Do it yourself | Immiva | Traditional immigration attorney |
|---|---|---|---|
| What you pay to prepare it | Free | Price temporarily unavailable | $1,000–$3,500 |
| The form itself | YesThe blank USCIS form, free to download | YesYour N-400, filled in from your answers | YesFilled in for you |
| Error checking | NoNone. You find out from the rejection notice | Yes22 checks, shown to you before you pay | YesA person reads it |
| Counting your days abroad | NoYou do the arithmetic | YesWe count them and give you a safe filing date | PartlyUsually, if you supply the dates |
| Document list | NoGeneric checklists you find online | YesBuilt from your answers | YesTailored to you |
| What it costs you upfront | YesNothing | YesPrice temporarily unavailable, and only after you see the report | NoA retainer before anything starts |
| How long it takes you | NoDays of reading instructions | YesUsually one sitting | NoWeeks of back and forth |
Your complete N-400 packet
The form, the pre-filing report, your document list, and filing instructions. You pay once you have seen the report.
Price temporarily unavailableOne price for this application. The USCIS filing fee is separate and paid to the government.
Covered by a money-back guarantee. Read the guarantee terms
Real filers
Two problems we caught before USCIS saw them
Both would have filed and been denied if they had gone alone.
Five years of constant travel across eight countries, and I had no idea how to count it. Immiva ran the numbers and told me I was 11 days short of the 913-day threshold. I'd have filed, paid $760, and been denied. I waited six weeks and filed clean.
David K.5-year green card path My green card came through a first marriage that ended in divorce, and I'd been scared to naturalize for years. Immiva flagged that exact situation in the review and told me what I'd need to prove the marriage was genuine. I take my Oath next month.
Sandra M.3-year marriage path
Common questions
N-400 questions, answered
What people ask before they start.
Yes. Most people file through a USCIS online account, and your finished N-400 works for that. If you would rather mail a paper packet, we give you print-ready pages and the right address.
You should not have to judge that yourself. We ask about the things that complicate a citizenship application: arrests, long trips abroad, taxes, Selective Service, a marriage-based green card. We check every answer, and anything that needs attention shows up in your report before you file. If your answers show an open immigration court case or a removal order, we tell you, and that is the time to talk to a lawyer.
Your eligibility math, the allegiance and oath questions, the eight good moral character areas, your address and employment history, and whether every field on the form is filled correctly. The full list is above.
Yes. The audit specifically looks at marriage-based green cards, borderline day counts, prior incidents you have to disclose, and Selective Service.
You do not have to. Enter your trips and we count the days, flag any absence long enough to break continuous residence, and give you the earliest date you can safely file. Try the residence calculator
USCIS sends a receipt, then a biometrics appointment, then an interview with the civics and English tests. If you are approved you take the Oath of Allegiance and you are a citizen.
A copy of your green card, then whatever your answers call for: marriage and divorce records on the three-year route, travel dates for long trips, tax transcripts if you owe or filed late, court records for any arrest, and Selective Service proof for men who lived here between 18 and 26. We build the list from your answers instead of handing you a generic checklist. See the full N-400 checklist
Immiva's fee is Price temporarily unavailable, paid once, after you have seen the report. It covers the finished form, the pre-filing report, your document list, and the filing instructions. The USCIS filing fee is separate and goes to the government.
No. Immiva is software. It turns the form into plain-English questions, fills the form from your answers, and checks those answers before you file. We do not give legal advice, and nothing here replaces a lawyer when your situation calls for one. The checks tell you when that is.
N-400 guides
Read this before you file
The parts of naturalization worth understanding before you start.
- N-400 Physical Presence CalculatorTrack your trips, calculate physical presence days, and find your earliest safe filing date.Interactive Tool
- N-400 Guide: How to Apply for U.S. CitizenshipComplete walkthrough of the naturalization process from eligibility to oath ceremony.Step-by-Step
- N-400 Physical Presence RequirementsUnderstand continuous residence and physical presence rules before you file.Eligibility
- N-400 Costs Explained: Filing Fees & AlternativesFull breakdown of USCIS fees, biometrics costs, and how to save on attorney fees.Cost
- N-400 Document Checklist 2026Everything you need to gather before submitting your citizenship application.Checklist
- Filing N-400 Without a LawyerWhen you can file solo, when you need help, and how guided prep saves thousands.Self-Filing
- N-400 Interview Questions 2026What USCIS officers ask during the naturalization interview and how to prepare.Interview
Related forms
What comes before and after
Where the N-400 sits in the sequence.