The Foreign Housing Exclusion Is Not Your Rent: The 16 Percent Base, 30 Percent Cap, and High-Cost-City Math

The short version

The foreign housing exclusion is not a reimbursement for your rent. It is a formula under Internal Revenue Code section 911: start with reasonable qualifying housing expenses, limit those expenses, subtract a required base amount, and then determine whether the result is an exclusion, a deduction, or a mix of both.

For 2026, the maximum foreign earned income exclusion is $132,900. That number produces a full-year base housing amount of $21,264, which is 16 percent of the maximum exclusion. The ordinary full-year housing-expense limit is $39,870, which is 30 percent of the maximum exclusion. In an ordinary-cost location, the largest possible full-year housing amount is therefore $18,606, not $39,870 and not your full rent.

Some high-cost locations receive a larger expense limit. IRS Notice 2026-25, for example, gives São Paulo a 2026 full-year limit of $56,600. The higher limit can increase the calculation, but it does not remove the $21,264 base and does not create a benefit for expenses you did not actually pay.

What the law actually says

Section 911 permits a qualified individual to elect a foreign earned income exclusion and, depending on how the housing amount was funded, a foreign housing exclusion or deduction. A qualified individual must have a tax home in a foreign country and meet an available bona fide residence or physical presence test. Bona fide residence eligibility is narrower for resident aliens and can depend on citizenship in a country with an applicable U.S. treaty. Passing an available test is the entrance requirement. It does not determine the housing amount by itself.

The statute defines the housing cost amount as qualified housing expenses minus a base housing amount. It also limits the expenses that can enter the calculation. The Treasury regulation then divides the result according to how the taxpayer earned the income:

The portion attributable to employer-provided amounts can be excluded. Employer-provided amounts can include ordinary salary and wages. Your employer does not have to pay the landlord directly. If you elect the housing exclusion, however, you must claim the full allowable amount rather than selecting a smaller amount.
The portion attributable to self-employment income can be deducted, subject to a separate income limitation.
If you have both employee and self-employment income, the housing amount is allocated between the exclusion and deduction using the employer-provided share of foreign earned income.

This distinction matters. Calling every result a “housing exclusion” can hide a different computation, a different line on the return, and a possible one-year carryover for a disallowed housing deduction.

The calculation, one gate at a time

Gate 1: Only qualifying housing expenses enter

The IRS includes reasonable foreign housing costs such as rent, utilities other than telephone charges, real and personal property insurance, nonrefundable lease fees, furniture rental, residential parking, and household repairs. The expenses must relate to a period when you had a foreign tax home and met the bona fide residence or physical presence test.

The IRS excludes the cost of buying or improving a home, mortgage principal, purchased furniture, domestic labor, pay television, depreciation, and deductible interest and taxes. Meals are not housing expenses. Employer-provided lodging excluded from gross income under section 119 does not count, although the fair rental value of employer-provided lodging included in taxable income can count. A large monthly payment is not automatically a qualified housing expense merely because it is connected to a home.

The regulation also requires a reduction for a tax-exempt military allowance, section 912 allowance, or similar tax-exempt allowance intended to pay housing costs for the same period. That rule prevents the same housing expense from supporting both a tax-free allowance and a section 911 housing amount.

Gate 2: Apply the expense limit

For 2026, the ordinary full-year limit on expenses is $39,870. A location listed in Notice 2026-25 can use its adjusted limit instead. São Paulo’s full-year adjusted limit is $56,600.

This is an expense ceiling, not an automatic exclusion. If a taxpayer in São Paulo pays $30,000 of qualifying housing expenses, the calculation starts with $30,000, not $56,600. If the taxpayer pays $70,000, the calculation starts with $56,600 because the notice caps the expenses that may be used.

Gate 3: Subtract the base housing amount

The full-year base for 2026 is $21,264. A taxpayer with $30,000 of allowed expenses has a housing cost amount of $8,736. A taxpayer in an ordinary-cost location whose expenses reach the $39,870 limit has a housing cost amount of $18,606.

That subtraction is why the housing benefit is not your rent. The first 16 percent of the annual foreign earned income exclusion amount is the statutory base the taxpayer must absorb before a housing amount exists.

Gate 4: Prorate for qualifying days

The annual figures assume that the entire 2026 calendar year is within the qualifying period. If only part of the year qualifies, the base and the expense limit are computed daily and multiplied by the applicable days. Expenses outside the qualifying period do not enter the calculation.

For 2026, the ordinary daily base is approximately $58.26 and the ordinary daily expense limit is approximately $109.23. Notice 2026-25 lists São Paulo’s adjusted daily expense limit as $155.07. Travel dates therefore affect more than the 330-day physical presence test. They can change the dollars that reach the housing calculation.

Gate 5: Decide whether the result is excluded or deducted

An employee generally uses the employer-provided portion as a foreign housing exclusion. A self-employed taxpayer generally uses the non-employer-provided portion as a foreign housing deduction. A taxpayer with both types of income splits the amount proportionately.

The housing exclusion is figured before the foreign earned income exclusion. Once elected, it cannot be selectively reduced below the full amount allowed by the rules. The IRS foreign housing guidance also states that the housing deduction cannot exceed foreign earned income minus the foreign earned income exclusion and any housing exclusion. A housing deduction disallowed by that income limitation can carry to the next year only. If it still cannot be used then, it expires.

Neither the foreign housing exclusion nor the foreign housing deduction reduces self-employment tax. A self-employed taxpayer must analyze Social Security coverage and any applicable totalization agreement separately.

A worked 2026 example: employee in São Paulo

Assume Maria is a U.S. citizen who is a qualified individual for all of 2026. She works in São Paulo as an employee, earns $170,000 of foreign wages, and pays $50,000 of qualifying housing expenses. All of her housing amount is attributable to employer-provided income.

Actual qualifying expenses: $50,000.
São Paulo expense limit: $56,600. Because actual expenses are lower, the calculation keeps $50,000.
Less the 2026 base housing amount: $50,000 minus $21,264 equals $28,736.
Foreign housing exclusion: $28,736, assuming the remaining eligibility rules are satisfied.
Foreign earned income remaining before FEIE: $170,000 minus $28,736 equals $141,264.
Potential 2026 FEIE: up to $132,900 because the remaining foreign earned income exceeds the annual FEIE ceiling.

The two exclusions could remove $161,636 from gross income in this simplified example, leaving $8,364 of the wages before other return items. That does not mean the final U.S. tax is calculated by applying a bracket directly to $8,364. The foreign earned income tax worksheet preserves the rate that would apply if the excluded income were still present, and any foreign tax credit must be coordinated with the excluded income.

If Maria lived in a location that was not entitled to a higher adjusted limit, the same $50,000 of expenses would first be capped at $39,870. Her housing amount would be $18,606, which is $10,130 less than the São Paulo result. The high-cost adjustment matters because it raises the expense ceiling. The base remains the same.

The 2026 numbers

Calculation item	Full-year 2026 amount	Daily amount, rounded	What the number does	Primary source
Maximum foreign earned income exclusion	$132,900	$364.11	Sets the indexed FEIE ceiling and supplies the base for the housing percentages	IRS Notice 2026-25; IRS FEIE guidance
Base housing amount, 16 percent	$21,264	$58.26	Must be subtracted from allowed housing expenses	IRS Notice 2026-25
Ordinary housing-expense limit, 30 percent	$39,870	$109.23	Caps expenses in a location without a higher adjusted limit	IRS Notice 2026-25
Largest ordinary housing amount, 30 percent less 16 percent	$18,606	$50.98	Maximum ordinary result before employee or self-employed classification	Computed from IRS Notice 2026-25
São Paulo adjusted housing-expense limit	$56,600	$155.07	Replaces the ordinary expense limit for qualifying days in São Paulo	IRS Notice 2026-25
Largest São Paulo housing amount after the base	$35,336	$96.81	Maximum São Paulo result if actual allowed expenses reach the adjusted limit	Computed from IRS Notice 2026-25

The computed rows are arithmetic differences, not separate IRS allowances. Actual expenses, qualifying days, foreign earned income, and the employee or self-employed allocation can produce a lower allowable amount.

Employee, self-employed, or both

The cash trail alone does not decide whether you receive an exclusion or deduction.

An employee may pay rent from a personal account and still have employer-provided amounts because salary and wages count. If the taxpayer has no self-employment income, the entire housing amount is generally treated as attributable to employer-provided amounts and is tested as an exclusion.

A contractor or sole proprietor with only self-employment income does not convert the housing amount into an exclusion. The amount is tested as a deduction, and the income limitation can defer part of it for one year. It still does not reduce self-employment tax.

A taxpayer with both wages and self-employment income allocates the housing amount. For example, if 60 percent of foreign earned income is employer-provided and 40 percent is self-employment income, the regulation generally allocates 60 percent of the housing amount to the exclusion and 40 percent to the deduction before applying the deduction limit.

This is one reason to classify compensation before filling in Form 2555. A payroll record, Schedule C ledger, and housing spreadsheet need to tell the same story.

Five mistakes that distort the answer

Treating the 30 percent figure as the exclusion. It is generally the ceiling on housing expenses. The 16 percent base is still subtracted.
Using the high-cost limit as if it were an allowance. The taxpayer must still have actual qualified expenses and enough foreign earned income.
Using a full-year limit for a partial-year qualification. Both the base and limit are daily computations when the qualifying period covers less than the full year.
Calling a self-employed amount an exclusion. It is generally a deduction, has an income limitation, and does not reduce self-employment tax.
Optimizing Form 2555 in isolation. Foreign tax credits are not available for foreign taxes allocable to excluded income. The exclusion, deduction, credit, state return, and local-country return should be modeled together.

What this means for you

Build the calculation from records, not from the annual rent total. Keep a day-by-day qualifying calendar, lease, rent receipts, utility records, insurance, parking, repair invoices, employer reimbursements, payroll records, and a list separating qualifying from nonqualifying expenses. If you changed cities, preserve the dates and expenses for each location because the adjusted limits are location-specific.

Then model the return in the required order:

establish the foreign tax home and qualifying period;
identify qualified housing expenses during that period;
apply the ordinary or adjusted daily expense limit;
subtract the daily base amount;
allocate the result between employer-provided and self-employment income;
figure the housing exclusion before the FEIE;
test the housing deduction limitation and any one-year carryover;
coordinate the result with foreign tax credits and self-employment tax.

The result may be valuable, especially in a high-cost city. It is still a calculation, not a rent write-off.

How Sheepdog Tax can help

I am Noah Green, a CPA and Certified Fraud Examiner, and Sheepdog Tax is a veteran-owned practice. I help U.S. taxpayers abroad turn travel dates, compensation records, leases, and foreign tax documents into a defensible return position. A focused review can compare the foreign housing exclusion or deduction, the FEIE, the foreign tax credit, self-employment tax, and state residency before one election narrows another option. To request an expat tax diagnostic, contact me at noah@sheepdogtax.com.

Sources (primary authority first)

26 U.S.C. section 911, Citizens or residents of the United States living abroad, statutory authority for the foreign earned income exclusion and foreign housing amount.
26 C.F.R. section 1.911-4, Determination of housing cost amount eligible for exclusion or deduction, allocation between employer-provided and non-employer-provided amounts, deduction limitation, and one-year carryover.
IRS Notice 2026-25, Determination of Housing Cost Amounts Eligible for Exclusion or Deduction for 2026, 2026 FEIE amount, base housing amount, ordinary expense limit, and adjusted limits by locality.
IRS, Foreign Housing Exclusion or Deduction, qualifying costs, employee and self-employed treatment, calculation order, and self-employment tax limitation.
IRS, Figuring the Foreign Earned Income Exclusion, 2026 FEIE ceiling, part-year proration, and the order of the housing exclusion and FEIE.
IRS, Instructions for Form 2555, Form 2555 housing-expense categories, worksheets, married-couple rules, and calculation mechanics.
IRS Publication 54, Tax Guide for U.S. Citizens and Resident Aliens Abroad, foreign housing exclusion and deduction rules, mixed employee and self-employed allocation, and carryover treatment.
IRS Publication 514, Foreign Tax Credit for Individuals, allocation of foreign taxes to excluded income and foreign tax credit coordination.

Prepared by Noah Green, CPA, CFE.