Streamlined Filing Years: Which Returns and FBARs to File

When working out your streamlined filing years, the IRS rule is fixed. You file the most recent 3 years of federal tax returns whose due date, including any properly requested extension, has passed. You also file the most recent 6 years of FBARs whose due date has passed. Both periods are measured from the day you submit, so the same person can have different covered years in June and November.

The Streamlined Filing Compliance Procedures let non-wilful US taxpayers catch up on missed returns and FBARs with reduced or no penalties. Getting the years wrong is a surprisingly common reason for a submission to be returned or questioned. This guide shows how to identify your covered period precisely, with worked examples for submissions in 2026.

The streamlined filing covered period

The IRS defines two separate look-back windows on its Streamlined Filing Compliance Procedures page. They apply to both the Streamlined Foreign Offshore Procedures (SFOP) and the Streamlined Domestic Offshore Procedures (SDOP).

The 3-year tax return period

The covered tax return period is the most recent 3 years for which the US tax return due date, or properly applied for extended due date, has passed. For SFOP, you file delinquent or amended Forms 1040, following the IRS instructions for taxpayers residing outside the United States. For SDOP, you file amended returns, because SDOP requires that you filed the original returns.

The 6-year FBAR period

The covered FBAR period is the most recent 6 years for which the FBAR due date has passed. FBARs, filed as FinCEN Form 114 through the FinCEN BSA E-Filing System, are due on April 15 with an automatic extension to October 15. In practice, most practitioners treat October 15 as the date that must have passed. Therefore, the FBAR window rolls forward each October.

How extensions move your streamlined filing years

The phrase "properly applied for extended due date" is where most errors happen. If you requested an extension for the latest year, that year does not enter the covered period until the extended date passes.

The three common due dates

A US resident's calendar-year return is due on April 15. A US citizen living abroad on April 15 gets an automatic 2-month extension to June 15. Either taxpayer can file Form 4868 to extend to October 15. As a result, the latest year can join the covered period on any of those three dates, depending on your facts.

These examples assume the October 15 FBAR convention. Always confirm the dates against current IRS guidance before you submit.

What about the year that is not yet due?

If a year falls outside the covered period only because its extended due date has not passed, you do not include it in the streamlined package. However, you must still file that return on time under the normal rules. In our experience, many late filers forget this year entirely and create a fresh compliance gap.

Why your streamlined filing years matter beyond paperwork

The covered years do more than set your paperwork. They also drive eligibility and cost.

SFOP non-residency test

To use SFOP, a US citizen must meet the non-residency requirement in at least one of the 3 years in the covered tax return period: no US abode and at least 330 full days outside the US. As a result, choosing when to submit can decide whether you qualify for SFOP or must use SDOP. Our guide to the Streamlined Foreign Offshore Procedures explains the test in full.

SDOP 5% penalty base

Under SDOP, you pay a miscellaneous offshore penalty of 5% of the highest aggregate year-end balance of your foreign financial assets during the covered tax return period and covered FBAR period combined. Consequently, shifting the window by a year can include or exclude a high-balance year. Our analysis of the streamlined domestic offshore penalty shows how the base is calculated.

Years before your streamlined filing years

Streamlined filing does not require returns or FBARs for years before the covered period. However, the IRS can still examine earlier years if it has cause. In practice, a complete and accurate streamlined submission usually closes the matter. Additionally, every return in the package needs Form 14653 (SFOP) or Form 14654 (SDOP), which certifies your non-wilful conduct across the covered years. Our guide to Form 14653 covers how to write that narrative.

An illustrative case

Consider an illustrative American in Dubai who never filed US returns or FBARs and plans to submit under SFOP. The facts are illustrative. If they submit in September 2026 after filing Form 4868 for 2025, the covered returns are 2022 to 2024, and 2025 must be filed separately by 15 October 2026. If they wait until November 2026, the covered returns become 2023 to 2025, and one package covers everything. For many clients, that later date is simpler, as long as it does not risk the IRS contacting them first. Once the IRS initiates contact, streamlined procedures are no longer available.

Checklist before you submit

First, fix your intended submission date. Next, list the due date, including any extension, for each recent tax year, and identify the 3 most recent that have passed. Then identify the 6 most recent FBAR years whose October 15 date has passed. Finally, check SFOP residency against the 3 covered years and gather balances for the whole combined period. Our FBAR and FATCA reporting page explains how to value each account.

If you are unsure which streamlined filing years apply to you, book a consultation with our streamlined compliance team. We map your covered period, choose the right procedure and prepare the full package.

Frequently Asked Questions

Which years do I file under the IRS streamlined procedures?

You file the most recent 3 years of US tax returns whose due date, including any properly requested extension, has passed, and the most recent 6 years of FBARs whose due date has passed. Both windows are measured from the date you submit, under the IRS Streamlined Filing Compliance Procedures.

Does an extension change my streamlined filing years?

Yes. If you properly requested an extension for the latest tax year, that year only enters the covered period once the extended due date has passed. Until then, the covered period uses the 3 earlier years, and you must file the latest year separately on time.

How many years of FBARs are required for streamlined filing?

Six. You file FinCEN Form 114 for the most recent 6 calendar years whose FBAR due date has passed. Because FBARs have an automatic extension to October 15, practitioners generally treat that date as the one that must have passed.

Do I need to file years before the streamlined covered period?

No. The Streamlined Filing Compliance Procedures only require returns and FBARs for the covered period. The IRS keeps the right to examine earlier years, but a complete, accurate streamlined submission usually resolves the taxpayer's past non-compliance.

Does the covered period affect the SDOP 5% penalty?

Yes. The Streamlined Domestic Offshore Procedures penalty is 5% of the highest aggregate year-end balance of foreign financial assets across the covered tax return and FBAR periods. Changing the submission date can change which years, and therefore which balances, are included.

Which streamlined filing years matter for the SFOP residency test?

The Streamlined Foreign Offshore Procedures require you to meet the non-residency test in at least one of the 3 years in the covered tax return period. That means having no US abode and spending at least 330 full days outside the United States in that year.