The 330-Day Physical Presence Test (PPT): Complete Form 2555 Rules & Rolling Window Calculation
How to legally qualify for the $133,000 Foreign Earned Income Exclusion (FEIE) using the IRS 330 full-day rule, avoid travel transit pitfalls, and pick your optimal 12-month qualifying period.
The Physical Presence Test (PPT) under Internal Revenue Code (IRC) §911(d)(1)(B) is the most objective and commonly used pathway for digital nomads and location-independent US citizens to claim the Foreign Earned Income Exclusion (FEIE). Unlike the Bona Fide Residence Test, the PPT does not require proving permanent local residency, long-term visas, or payment of foreign taxes—it relies entirely on mathematical day counting.
- Required Days: Exactly 330 full 24-hour days in a foreign country (or countries).
- Time Horizon: Any consecutive 12-month period (365 days)—does not need to follow the calendar year.
- 2026 Exclusion Cap: Up to $133,000 of foreign earned compensation.
- Key Rule: A qualifying day must be a full 24-hour period from midnight to midnight.
1. The Strict Definition of a "Full Foreign Day"
The most critical concept in IRS regulations is that a qualifying day is strictly a full 24-hour period starting at midnight and ending at the following midnight (IRS Publication 54).
If you depart the United States on June 1 at 2:00 PM and land in Lisbon, Portugal on June 2 at 7:00 AM:
- June 1: Does NOT count (part of the day was spent in the US).
- June 2: Does NOT count (you arrived after midnight).
- June 3: First qualifying day (you were present in Portugal from midnight to midnight).
2. The Rolling 12-Month Window Strategy
Your qualifying 12-month period does not need to begin on January 1. It can begin on any day of the calendar year and ends 365 days later (366 days in a leap year).
Furthermore, you can choose any 12-month period that maximizes your qualifying exclusion for the tax year. If you moved abroad on September 1, 2025:
- You can define your 12-month period as September 1, 2025 through August 31, 2026.
- For the 2025 tax year, your maximum exclusion is prorated based on the number of qualifying days within 2025 (122 days / 365 × $130,000 cap = $43,452).
- For the 2026 tax year, you can choose another overlapping 12-month period (e.g., January 1, 2026 through December 31, 2026) to claim the full $133,000 cap.
3. How to Report PPT on IRS Form 2555 (Part III)
When completing Form 2555, Part III requires listing your exact travel history into and out of the United States:
- Line 16: Enter the exact 12-month qualifying period (e.g.,
04/01/2025 to 03/31/2026). - Line 18: Complete the travel schedule listing every single entry and departure to/from the United States, including dates of arrival, dates of departure, and full days spent in the US.
- Line 42: Compute your allowable exclusion and note how the IRS stacking rule applies to any income exceeding the threshold.
4. Common Audit Triggers & Proof of Presence
Because the Physical Presence Test is purely mathematical, the IRS frequently conducts correspondence audits requesting documentary proof of foreign presence. Essential records include:
- Passport entry/exit stamps and electronic border records (e.g., I-94 travel history for US returns).
- Boarding passes and flight reservation confirmations.
- Lease agreements, Airbnb / hotel receipts, and local utility invoices.
- Credit card and bank statements proving regular daily in-country transactions.
Simulate Your 330-Day Travel Log
Use our interactive suite to test multiple 12-month rolling windows and verify your exact qualifying days.
Calculate Your Exact Expat Tax Liability
Test your 330-day physical presence window, simulate Schedule SE self-employment tax, and compute foreign housing exclusions with our deterministic 2026 tax engine.