What is the 330-day test for the IRS Streamlined Foreign Offshore Procedure?

It is the non-residency requirement that asks whether you were physically outside the United States for at least 330 full days, with no U.S. abode, in one of the most recent three tax years for which the return due date has passed. You only need to meet it in one of the three years, not all three. Meeting it qualifies you for the foreign track of the streamlined program, which carries no miscellaneous offshore penalty.

Does the day I fly home count toward my 330 days abroad?

No. IRS guidance treats a full day as 24 consecutive hours spent entirely outside the United States, so the day of departure and the day of arrival typically do not count as full days abroad. Time spent over international waters or airspace between the US and a foreign country is also excluded. This is one of the most common reasons a self-calculated count falls short of 330.

Can I qualify for SFOP if I still own a house in the United States?

Possibly, because owning or maintaining a US dwelling does not automatically mean your abode is in the United States. The abode test looks at where your strongest economic, family, and personal ties sit, not simply property ownership. However, a spouse or children living in that US home full-time, or a primary bank and business base still centred in the US, can point toward a US abode even in a year with a strong day count.

What if I don't meet the 330-day test in any of the last three years?

If none of your three most recent qualifying years clears 330 full days abroad with no US abode, you are not eligible for the Streamlined Foreign Offshore Procedures. In that situation, we typically evaluate eligibility for the Streamlined Domestic Offshore Procedures instead, which carries a miscellaneous offshore penalty but still resolves the non-compliance well outside of an audit context. The right year to test should be checked before you file, not after.

Do both spouses need to pass the 330-day test for a joint streamlined filing?

Yes, the IRS requires both spouses on a joint return to independently meet the applicable non-residency requirement to use the Streamlined Foreign Offshore Procedures jointly. If only one spouse clears 330 days in a qualifying year, we assess whether filing separately, with each spouse on the track that fits their own facts, produces a better outcome. This is a frequent issue for couples splitting time between the UK and the US.

What documents do I need to prove I met the 330-day test?

We typically rely on passport entry and exit stamps or a CBP travel history report, airline boarding passes and itineraries, an employer relocation or assignment letter, UK lease or utility records, and a reconciled day-by-day travel calendar. Furthermore, cross-checking these sources against each other, rather than relying on a client's memory of their travel, is what makes a 330-day certification defensible if the IRS later reviews the submission.

IRS Streamlined Foreign Offshore Procedure 330-Day Test

The IRS Streamlined Foreign Offshore Procedure 330-day test asks one narrow question: were you physically outside the United States for at least 330 full days, with no U.S. abode, in any one of the most recent three tax years for which the return due date has passed? If the answer is yes for even a single one of those three years, you meet the non-residency requirement that opens the door to the Streamlined Foreign Offshore Procedures (SFOP) — the version of the IRS streamlined program that carries no offshore penalty. Get the day count wrong, however, and your file gets pushed into the far more expensive Streamlined Domestic Offshore Procedures (SDOP) instead. We prepare these submissions for American bankers, founders, and investors living across the UK, and the 330-day count is the single most common reason a first attempt at self-preparation goes wrong.

What Is the IRS Streamlined Foreign Offshore Procedure 330-Day Test?

The IRS Streamlined Foreign Offshore Procedure sets a strict, objective threshold rather than a subjective one. According to IRS.gov, an individual U.S. citizen or lawful permanent resident meets the applicable non-residency requirement if, in any one or more of the most recent three years for which the U.S. tax return due date has passed, the person did not have a U.S. abode and was physically outside the United States for at least 330 full days. That is meaningfully different from the bona fide residence test used elsewhere in the tax code, which weighs intent, ties, and the permanence of a foreign home rather than counting days. Streamlined eligibility recognises only the day-count route. There is no bona fide residence alternative built into the streamlined non-residency requirement, so even a client with a decade of genuine UK residency still has to demonstrate the 330-day count for at least one qualifying year.

How Does the "Three Most Recent Years" Rule Actually Work?

The three years in play are not fixed. They move with the calendar and with your extension history, because the test looks at the three most recent years for which the return due date, including any properly requested extended due date, has already passed at the time you submit the streamlined package. A client filing in the summer, for example, may find that the prior year's April due date has passed, pulling that year into the three-year window, while a client who filed in the early spring, before that deadline arrived, is still testing against an earlier set of three years. Consequently, the exact years you need to test can shift depending on when in the calendar year you actually file. Furthermore, because you only need to satisfy the 330-day requirement in one of the three years, not all three, the practical task is identifying which single year gives you the cleanest, most defensible count before you commit to a filing date.

What Counts as a Full Day Abroad, and Where Does the Travel-Day Trap Hide?

IRS guidance on counting days toward a 330-day physical presence standard is precise: a full day is a period of 24 consecutive hours, beginning and ending at midnight, spent entirely in a foreign country. If you land in London at nine in the morning, that day does not count as a full day abroad, because you were not outside the United States for the whole 24 hours. Additionally, the IRS is explicit that when you leave the United States for a foreign country, or return from one, the time spent on or over international waters does not count as time in a foreign country. In practice, this means the day you fly out and the day you fly back are usually lost from the count entirely. For a client who travels frequently, these travel-day losses accumulate faster than most people expect, and they are the most common reason a self-prepared 330-day count comes up short.

The day of departure from the US and the day of arrival back in the US are not counted as full days abroad, even if most of the day was spent travelling.
Time spent over international waters or airspace between the US and a foreign country does not count as time in a foreign country.
A connection or layover through a US airport, even without leaving the terminal, breaks the day and can cost you a full day from the count.
A short weekend trip home for a wedding, funeral, or board meeting can quietly remove three or four full days from an otherwise strong count.
Days spent in a US territory that is not treated as "outside the United States" for this purpose do not count as foreign days.

SFOP vs SDOP: Why the Foreign Procedure Carries No Offshore Penalty

The reason the 330-day test matters so much financially is the penalty gap between the two streamlined tracks. IRS.gov states that a taxpayer who is eligible for the Streamlined Foreign Offshore Procedures and complies with the instructions will not be subject to failure-to-file, failure-to-pay, accuracy-related, information return, or FBAR penalties, and the foreign procedures do not layer on a miscellaneous offshore penalty at all. Compare that with the Streamlined Domestic Offshore Procedures, where IRS.gov confirms a miscellaneous offshore penalty currently set at 5 percent of the highest aggregate value of the relevant unreported foreign financial accounts and assets across the covered years. For a HNW client holding UK pensions, brokerage accounts, and company shareholdings, that 5 percent base can represent a substantial figure, which is precisely why we push hard on the day count before assuming a client is limited to the domestic track.

What Is the Abode Question, and Can It Disqualify You Even With 330 Days Abroad?

Hitting 330 days abroad is only half the non-residency test; you also need no U.S. abode during that year. The IRS FAQ for the Streamlined Foreign Offshore Procedures ties the abode definition to IRC section 911(d)(3) and its regulations, and IRS guidance under that framework notes that neither temporary presence in the United States nor maintenance of a dwelling in the United States necessarily means your abode is in the United States. Abode is generally understood as where your strongest economic, family, and personal ties sit, rather than simply where you own or rent property. In our experience, this trips up clients who moved to London for work but kept a family home occupied by a spouse or children in the US, kept US voter registration and a primary bank relationship there, or continued running a US-based business day to day. Those facts can point toward a US abode even in a year where the flight logs show 330 days abroad.

What Documents Prove You Met the 330-Day Test?

Because the streamlined package is a certification, not an audit, the IRS does not require you to attach day-by-day proof when you file. That said, we build and retain a full evidentiary file for every client, because the IRS retains the right to examine a streamlined submission, and a certification without support behind it is a weak certification. A defensible file typically draws on several independent sources cross-checked against each other.

Passport entry and exit stamps, or a US Customs and Border Protection travel history report, showing dates crossing in and out of the United States.
Airline boarding passes, e-tickets, and itineraries that corroborate departure and arrival times to the hour.
An employer relocation letter, secondment agreement, or assignment contract confirming the start date of the foreign posting.
UK lease agreements, council tax records, or utility bills establishing a continuous foreign residence during the test year.
A day-by-day travel calendar built from credit card statements, mobile phone location data, and diary records, reconciled against the passport stamps.

Worked Scenario: Counting Days for a Banker With Scattered US Trips

Consider a managing director at a London investment bank who relocated from New York in January and wants to test that same calendar year for the 330-day requirement. Across the year, she made four client trips back to New York, each lasting five days including travel, plus a ten-day trip over the December holidays to see family in Connecticut. Each of those five trips loses two travel days from the count under the international-waters and arrival/departure rules, on top of the days actually spent physically inside the United States. Add up the trips: four five-day trips and one ten-day trip put roughly 30 days on US soil across the year, and the associated travel days push the total lost days higher still once you account for the day of departure and the day of return on each leg.

Against 365 days in the year, losing somewhere in the region of 35 days to US presence and travel still leaves her comfortably clear of the 330-day threshold, but only because we mapped every trip against her actual boarding passes rather than relying on her memory of a “few trips home.” We have seen clients with a genuinely similar travel pattern fall two or three days short of 330 simply because an unplanned trip for a family emergency, or an extra connecting flight through a US hub, was never factored into their own back-of-envelope count. That is why we reconstruct the full calendar before certifying a year, rather than after.

Choosing Which of the Three Years to Test in a Relocation Year

Because only one of the three most recent years needs to satisfy the 330-day requirement, the year you actually relocated is often the weakest candidate rather than the strongest. A move in, say, September typically leaves three to four months of the calendar year still spent packing up, working notice periods, or handling the sale of a US home, all of which are US days that count against the total. The first full calendar year after the move, by contrast, usually offers the cleanest 330-day count, since the client has generally settled into the foreign posting for the entire twelve months. We routinely map all three eligible years side by side for a relocating client, rather than assuming the most recent year is automatically the right one to certify, since selecting the wrong year can turn a straightforward SFOP filing into a rejected submission.

What Goes Into Form 14653 and the Non-Willfulness Narrative?

Once the 330-day year is settled, the streamlined package requires a signed Certification by U.S. Person Residing Outside of the U.S., Form 14653. On it, you certify that you meet the applicable non-residency requirement for the year you selected, and you provide a specific, personalised statement explaining why your prior non-compliance was non-willful. The IRS defines non-willful conduct as conduct due to negligence, inadvertence, or mistake, or conduct resulting from a good faith misunderstanding of the requirements of the law. A generic paragraph rarely holds up; we write the narrative around the client's actual facts — the accountant who never mentioned FBAR, the assumption that a UK ISA or workplace pension was outside US reporting scope, the years spent believing that UK tax withheld at source satisfied every US obligation — because a specific, credible account of the misunderstanding is what the certification is meant to capture.

What's in the Filing Package: Three Years of Returns, Six Years of FBARs?

The substantive filing package under the Streamlined Foreign Offshore Procedures covers amended or delinquent federal income tax returns for each of the most recent three years for which the due date has passed, together with all required information returns for those years, such as Form 8938 or Form 5471 where applicable. Separately, and covering a longer look-back, the package includes FinCEN Form 114 FBARs for each of the most recent six years for which the FBAR due date has passed, for any foreign account that crossed the FBAR reporting threshold. Both pieces are filed together as a single streamlined submission, cross-referenced to the Form 14653 certification and, where applicable, the streamlined penalty calculation. For a client with UK pensions, ISAs, and investment accounts held across several institutions, reconciling three years of returns against six years of FBARs is usually the most labour-intensive part of the engagement, and getting the account values and highest balances right matters as much as the day count itself.

What Happens If You Fail the 330-Day Test in Your Target Year?

Falling short of 330 days in your first-choice year is not automatically fatal to a Streamlined Foreign Offshore Procedure filing. Because the requirement only needs to be met in one of the three most recent qualifying years, the next step is testing the other two years before assuming SFOP is unavailable. If none of the three years clears 330 full days abroad with no US abode, the client does not qualify for the foreign track, and we pivot the analysis to the Streamlined Domestic Offshore Procedures instead, which carries the 5 percent miscellaneous offshore penalty but remains far less costly than an audit-driven outcome. We would rather find that gap during the planning stage, while there is still a choice of which year to test and how to time the filing, than after a submission has already gone in with a weak certification behind it.

Do Both Spouses Need to Meet the 330-Day Test on a Joint Return?

Yes. For joint return filers, the IRS is explicit that both spouses must independently meet the applicable non-residency requirement to use the Streamlined Foreign Offshore Procedures on a joint submission. This becomes a genuine planning issue for couples where one spouse works abroad while the other splits time between the UK and the US for family or business reasons. When only one spouse clears 330 days in a qualifying year, we generally look at whether that spouse can file separately under SFOP while the other spouse is addressed under the domestic track, weighed against the practical and cost trade-offs of filing separately versus jointly. Every case turns on the specific facts, which is why we map both spouses' travel calendars before recommending a filing strategy rather than assuming a couple automatically files as a single unit.