N-400 Eligibility: Continuous Residence vs Physical Presence (With Examples)

Continuous residence and physical presence are two separate tests on Form N-400, and you must pass both. Physical presence is a simple count: you must have spent at least 30 months inside the US during the 5-year period (18 months on the 3-year marriage path). Continuous residence looks at individual trips: one trip longer than 6 months is presumed to break your residence, and a trip of 1 year or more breaks it.

Key points

• 5-year path: 5 years of continuous residence and at least 30 months (about 913 days) of physical presence.
• 3-year path (married to a US citizen): 3 years of continuous residence and at least 18 months of physical presence.
• A single absence of more than 6 months but less than 1 year creates a rebuttable presumption that continuous residence was broken.
• An absence of 1 year or more breaks continuous residence, unless an approved Form N-470 covers it.
• You can file up to 90 days before your 5-year or 3-year anniversary, and you need 3 months of residence in your state or USCIS district.

The two tests side by side

	Physical presence	Continuous residence
What it measures	Total days inside the US	Whether any single trip broke your residence
5-year path	At least 30 months	5 years with no break
3-year path	At least 18 months	3 years with no break
Key thresholds	Count the total	Trips over 6 months and trips of 1 year or more
Can it be rebutted?	No; it is a count	Yes, for trips over 6 months but under 1 year
Protected by N-470?	Generally no (except US government and religious work)	Yes, for qualifying work abroad

Sources: USCIS Policy Manual, Vol. 12, Part D, Ch. 3 and Ch. 4.

You can fail one test and pass the other. Someone who takes many short trips may never break continuous residence but still fall short of 30 months. Someone who spends one 8-month stretch abroad may have plenty of days in the US but face the continuous residence presumption.

Physical presence: counting your days

Physical presence is arithmetic. List every trip outside the US during the statutory period (the 5 or 3 years before you file), add up the days abroad, and subtract from the total.

Example 1: frequent short trips

Priya has been a permanent resident for 5 years. She made 14 trips to visit family, each about 10 weeks, for roughly 980 days abroad. Five years is about 1,826 days, so she was in the US for about 846 days. That is less than 30 months (about 913 days). No single trip was over 6 months, so her continuous residence is fine, but she fails physical presence and needs to wait until her days inside the US reach 30 months within the 5 years before filing.

Example 2: the 3-year path

Daniel is married to a US citizen and has been a permanent resident for 3 years. He spent about 200 days abroad on short work trips. Three years is about 1,095 days, so he was in the US about 895 days, well above 18 months (about 548 days). He passes both tests.

Keep your list accurate. Officers can compare your answers with your passport stamps and with CBP entry and exit records, and mistakes can look like misrepresentation. You can request your travel history from CBP’s I-94 website or through a FOIA request if you are unsure.

Continuous residence: the 6-month and 1-year rules

Trips under 6 months

Trips of 6 months or less do not, on their own, affect continuous residence. They still count against physical presence.

Trips over 6 months but under 1 year

USCIS presumes that such a trip broke continuous residence. You can rebut the presumption with evidence, which the Policy Manual says can include showing that during the trip:

• you did not end your US employment;
• your immediate family stayed in the US;
• you kept access to your US home (owned or leased);
• you did not get a job abroad.

Other helpful evidence includes filing US tax returns as a resident, keeping US bank accounts and cars, and why the trip was long (for example, caring for a sick parent).

If you cannot rebut it, you start a new period. The Policy Manual example: an applicant on the 5-year path returns from an 8-month trip on August 1, 2018. If the presumption cannot be rebutted, the earliest they can file again is February 1, 2023.

Trips of 1 year or more

A continuous absence of 1 year or more automatically breaks continuous residence (unless covered by an approved N-470, below). A trip this long can also lead to questions about whether you abandoned permanent residence. A reentry permit protects your green card for reentry purposes but does not preserve continuous residence for naturalization.

After a break, the Policy Manual explains when you can file again on the 5-year path. Its example: an applicant leaves on January 1, 2010 and returns on January 2, 2011. They may file:

• from January 3, 2015 (4 years and 1 day after returning), but they must rebut the presumption because the new period still includes part of a long absence; or
• from July 6, 2015 (4 years and 6 months after returning), when no presumption applies.

These dates are easy to get wrong, so check them with a lawyer if you are in this situation.

Early filing: the 90-day window

The N-400 page lets you file up to 90 calendar days before you complete continuous residence. If your card says “Resident Since: March 15, 2021,” the 5-year mark is March 15, 2026 and you could file from about December 15, 2025. Use the USCIS early filing calculator rather than counting yourself.

Note that early filing only applies to the continuous residence period. You must still meet physical presence and the 3-month state or district residence requirement when you file.

The 3-month state or district rule

You must have lived for at least 3 months in the state or USCIS district where you file before you file. If you moved recently, wait until you reach 3 months. Students can sometimes file where they go to school or where their parents live; check the Policy Manual for details.

Form N-470: preserving residence for work abroad

Form N-470, Application to Preserve Residence for Naturalization Purposes, protects continuous residence for permanent residents who go abroad to work for:

• the US government;
• a qualifying American firm or its subsidiary engaged in developing US foreign trade and commerce;
• certain public international organizations;
• a recognized religious denomination, as a religious worker.

Requirements from the Policy Manual:

• You must have been physically present in the US as a permanent resident for an uninterrupted period of at least 1 year before the job abroad.
• You must file before you have been abroad for a continuous year.
• The fee is $420 (G-1055 edition 10/07/26).
• Approval does not count the time abroad as physical presence, except for US government employees and religious workers.
• Approval does not guarantee you will not be found to have abandoned permanent residence.

Checklist before you file

1. Write down every trip abroad in the statutory period with exact dates.
2. Add up total days abroad and check you meet 30 months (or 18 months).
3. Flag any trip over 6 months and collect evidence to rebut the presumption.
4. If any trip was 1 year or more, calculate your new eligibility date or speak to a lawyer.
5. Confirm 3 months of residence in your state or district.
6. Use the USCIS early filing calculator.

If you are on the marriage path, also read citizenship through marriage: the 3-year rule. Once you know you are eligible, follow the N-400 step-by-step guide.

When to talk to a lawyer

Get advice from a licensed immigration attorney or DOJ-accredited representative if you had a trip over 6 months, any trip of 1 year or more, filed taxes as a nonresident, or worked abroad. These facts can affect both naturalization and your green card itself.

What to do next

1. Pull your travel history and count your days.
2. Calculate your filing date with the USCIS calculator.
3. Start civics practice early with our free US citizenship practice test (2025 format: 20 questions, 12 correct to pass).
4. Check the US country hub and updates page for any rule changes.

General information, not legal advice. Checked against USCIS sources on October 11, 2026.