Prorated FEIE: How to Calculate Your Exclusion for Partial Years

What if you only lived abroad for part of the year? Or you started mid-year and won't hit 330 days until next year? The prorated FEIE lets you claim partial exclusions in these situations. Here's how it works.

When Pro-Rating Applies

You'll need to pro-rate your FEIE exclusion when:

• You moved abroad mid-year
• You returned to the U.S. mid-year
• Your 330-day qualifying period spans two tax years
• You were abroad for less than a full year

The Pro-Rating Formula

The maximum FEIE is adjusted based on the portion of the year you qualify:

Prorated FEIE = Maximum FEIE × (Qualifying Days ÷ Days in Year)

Example Calculation

You moved abroad on September 1, 2026, and qualify for the rest of the year:

• Maximum FEIE (2026): $130,000
• Qualifying days: 122 (Sept 1 – Dec 31)
• Days in year: 365
• Prorated FEIE: $130,000 × (122 ÷ 365) = $43,452

The 12-Month Period Strategy

Here's where it gets strategic. Your 330-day qualifying period doesn't have to match the calendar year. You can choose any 12-month period that includes at least 330 days abroad.

Optimizing Your Qualifying Period

Moved abroad in March 2026? Consider these options:

12-Month Period	Days in 2026	Days in 2027	2026 Prorated FEIE
March 15, 2026 – March 14, 2027	292	73	$130K × (292÷365) = $103,945
April 1, 2026 – March 31, 2027	275	90	$130K × (275÷365) = $97,945

The earlier your 12-month period starts (while still achieving 330 days), the more 2026 days you can include, maximizing your 2026 exclusion.

Multiple Qualifying Periods

You might have qualifying days from two different 12-month periods in the same tax year:

Example: Continuous Travel

If you left in March 2026 and stay abroad through 2027:

• First period: March 15, 2026 – March 14, 2027 (covers March-Dec 2026)
• Second period: January 1, 2027 – December 31, 2027 (covers all of 2027)

For 2026, you pro-rate based on days from March 15 through December 31.

Overlapping Periods

You can use overlapping qualifying periods, but you can't count the same income twice. The IRS will only allow you to exclude income earned during qualifying days, calculated using the period most favorable to you.

First-Year Expats: The Waiting Game

If you moved abroad late in the year and won't hit 330 days until the following year, you have options:

Option 1: File an Extension

• Get the October 15 extension
• If needed, request a special December 15 extension for FEIE qualification
• Wait until you've met the 330-day test before filing

Option 2: File Without FEIE, Then Amend

• File your 2026 return without claiming FEIE
• Pay the tax
• Once you qualify (in 2027), file an amended 2026 return claiming the FEIE
• Get a refund for the overpaid tax

Housing Exclusion Pro-Rating

The Foreign Housing Exclusion is also prorated:

• Base housing amount is reduced proportionally
• Housing expenses are only counted for qualifying days
• Location-based limits apply to the prorated period

Housing Pro-Rating Example

200 qualifying days in 2026:

• Full-year base amount: $20,800
• Prorated base: $20,800 × (200÷365) = $11,397
• Only housing expenses from qualifying days are counted

Partial-Year Income Allocation

When pro-rating, you can only exclude income earned during qualifying days. You may need to allocate annual income across the year:

Salary

Typically allocated evenly across working days. If you earned $120,000 for the full year but only 200 days qualify:

• Daily rate: $120,000 ÷ 260 working days = $461.54/day
• Qualifying income: 200 days × $461.54 = $92,308
• This is what can potentially be excluded (subject to prorated maximum)

Bonuses

Generally allocated to the period when earned (which may differ from when paid).

Form 2555 for Prorated FEIE

When filling out Form 2555 for a partial-year:

• Part II: Enter your actual qualifying period dates (not necessarily Jan 1 – Dec 31)
• Part IV: Calculate housing based on qualifying period
• Part VI: The form calculates your prorated exclusion limit automatically

Common Pro-Rating Mistakes

1. Using calendar year when 12-month period is better: Choose strategically
2. Not extending to complete qualifying period: Wait to file if needed
3. Forgetting to prorate housing: It's not just income exclusion
4. Counting all income as excludable: Only income from qualifying days applies
5. Missing the amended return option: You can go back and claim FEIE

📌 Bottom Line

Pro-rating isn't a penalty—it's a tool that allows you to claim the FEIE even in partial years. The key is choosing your 12-month qualifying period strategically and understanding how to allocate income to qualifying days. In your first year abroad, patience often pays off: waiting to file until you've achieved 330 days maximizes your exclusion.