The Tax Cuts and Jobs Act of 2017 dramatically changed the tax treatment of employer-paid international relocations for civilian taxpayers. Before 2018, IRC §132(g) excluded "qualified moving expense reimbursements" from gross income, and IRC §217 allowed employees to deduct unreimbursed moving expenses above the line. The TCJA suspended both for tax years 2018 through 2025 for all non-military taxpayers. Active-duty military on PCS orders under IRC §217(g) retained both the exclusion and the deduction.
The practical consequence: for non-military expat assignments in 2018-2025, every dollar of employer-paid international relocation is W-2 taxable wages. Tax gross-ups are now standard. As of May 2026, Congress had not enacted legislation extending or replacing the suspension. Verify the current treatment with the latest version of IRS Publication 521 (Moving Expenses).
This guide focuses on the income tax issues that arise after the move — for the gross-up math on the relocation itself, see our companion guide on Corporate Relocation Tax Gross-Up 2026.
The fundamental challenge of expatriation for U.S. citizens and green-card holders is the worldwide income rule: U.S. tax obligation continues regardless of where you live, work, or earn income. The United States is one of only two countries (with Eritrea) that taxes citizens based on citizenship rather than residency.
The U.S. taxpayer abroad faces three layers of tax law: (a) U.S. federal income tax on worldwide income, (b) host-country income tax on income sourced in or paid in the host country, (c) state income tax if state residency is not properly broken. The interaction is mitigated by the Foreign Earned Income Exclusion (FEIE), the Foreign Housing Exclusion, the Foreign Tax Credit (FTC), and tax treaties — but only if the taxpayer affirmatively claims them on the correct forms.
FEIE allows a U.S. taxpayer to exclude a defined amount of foreign-earned income from U.S. taxation. The 2026 maximum exclusion is $130,000 per qualifying taxpayer (per IRS Rev. Proc. 2025-32). For married filing jointly where both spouses qualify, the combined exclusion is $260,000.
To claim FEIE, the taxpayer must meet one of two tests:
FEIE is claimed on Form 2555 attached to Form 1040. The form has separate sections for the FEIE itself and the Foreign Housing Exclusion. Form 2555 is one of the most-error-prone IRS forms — common mistakes include incorrect computation of days outside the U.S., failing to break state residency, double-counting income, and not reducing FEIE for the housing exclusion claim. Failure to file Form 2555 in a year FEIE is allowed forfeits the exclusion for that year (with limited late-election relief available via PLR or §911(d)(1) discretionary regulations).
The Foreign Housing Exclusion under IRC §911(c) allows the FEIE to be supplemented by excluding employer-provided housing costs above a floor (16% of the FEIE base) up to a cap (typically 30% of the FEIE).
2026 standard limits:
The exclusion equals (Employer-paid housing — floor) up to the cap. Example: employer pays $50,000 housing. Excludable amount = min($50,000 - $20,800, $39,000) = $29,200. The $20,800 floor remains taxable; the $11,000 difference between $50,000 employer-paid housing and the $39,000 cap is also taxable.
Many high-cost cities have IRS-published housing caps higher than $39,000 under the annual high-cost-country notice. For 2025 (the most recent published, as 2026 notice typically comes mid-year):
| City | 2025 housing cap | Typical full FEIE+housing combined exclusion |
|---|---|---|
| Hong Kong | $114,300 | ~$220,000 |
| Singapore | $87,200 | ~$195,000 |
| Tokyo | $74,400 | ~$184,000 |
| London | $72,300 | ~$182,000 |
| Geneva | $103,500 | ~$210,000 |
| Paris | $67,500 | ~$178,000 |
| Zurich | $78,400 | ~$190,000 |
| Sydney | $59,200 | ~$172,000 |
Verify the current cap in the IRS annual notice. The 2026 notice is typically published in late summer 2026 for the 2026 tax year.
The Foreign Tax Credit prevents double taxation by allowing U.S. taxpayers to credit foreign income tax paid against their U.S. tax liability on the same income. Unlike FEIE's $130,000 cap, FTC has no income limit — the credit equals the lesser of (a) actual foreign tax paid, or (b) the U.S. tax that would have been owed on the foreign-source income.
FTC is claimed on Form 1116 (separate forms required for each "category" of income — passive, general, GILTI, branch, foreign branch, sec 901(j), certain treaty-resourced income, lump-sum distributions). Excess FTC can be carried back 1 year and forward 10 years.
| Scenario | Better choice | Reason |
|---|---|---|
| Foreign income under $130,000, low foreign tax rate | FEIE | Simple exclusion; no foreign tax credit needed |
| Foreign income over $130,000, high foreign tax rate | FTC alone | FEIE only excludes first $130k; FTC covers all |
| Foreign income over $130,000, low foreign tax rate | FEIE + FTC for excess | Combine — FEIE up to $130k, FTC for income above |
| Plans to use foreign housing exclusion | FEIE | Housing exclusion requires FEIE election |
| Has passive income (dividends, interest) abroad | FTC | FEIE doesn't apply to passive income |
| Plans to retire abroad with U.S. retirement income | FTC | U.S. pension income not eligible for FEIE |
Note: FEIE is "all or nothing" for FEIE-eligible income — you can't FEIE part and FTC the rest of the same income. But you can FEIE earned income and FTC passive income from the same country. The choice is also "sticky" — once you elect FEIE, you must use it consistently year-over-year unless you revoke (which generally locks you out of FEIE for 5 years).
Tax equalization is a corporate compensation policy where the employer ensures the assignee pays no more (and sometimes no less) tax than they would have paid had they remained in the home country. The policy makes international assignments tax-neutral from the assignee's perspective.
Tax equalization typically costs the employer between 30% and 100% of base salary in incremental tax cost. The cost is driven by: (a) the host country's effective tax rate compared to the U.S. effective rate, (b) the assignee's family size and dependents, (c) the assignee's income level, (d) whether stock options or RSUs vest during the assignment. Mid-level U.S. expatriates to Germany, France, or Belgium often produce 60-80% tax equalization costs; expatriates to Hong Kong, Singapore, or UAE often produce minimal incremental cost (because the host country's tax is lower than the U.S.).
FATCA (Foreign Account Tax Compliance Act) requires U.S. taxpayers with foreign financial assets above defined thresholds to file Form 8938 with their income tax return. 2026 thresholds:
| Filing status | U.S.-resident threshold | Abroad threshold (>330 days outside U.S.) |
|---|---|---|
| Single / MFS | $50,000 end of year OR $75,000 any time | $200,000 end of year OR $300,000 any time |
| Married filing jointly | $100,000 end of year OR $150,000 any time | $400,000 end of year OR $600,000 any time |
Form 8938 covers a broader asset universe than FBAR — including foreign stocks not held in custodial accounts, foreign partnership interests, certain foreign insurance contracts with cash value, foreign-issued mutual funds (PFICs), and foreign retirement accounts in certain configurations. Penalties up to $10,000 per failure to file; up to $50,000 if not corrected after IRS notice.
FBAR is filed separately from the income tax return through the FinCEN BSA E-Filing system. Required when the U.S. person had financial interest in or signature authority over foreign financial accounts with aggregate value exceeding $10,000 at any time during the calendar year.
2026 deadline: April 15 with automatic extension to October 15. The extension is automatic — no separate request required. Non-willful violation penalty: up to $10,000 per year per violation (often per account in aggressive cases). Willful violation penalty: up to the greater of $100,000 or 50% of the account balance. The Streamlined Filing Compliance Procedures and the Delinquent FBAR Procedures provide reduced-penalty pathways for taxpayers who failed to file in good faith.
State income tax does NOT automatically stop when the assignee moves abroad. State residency is broken only if the assignee actively establishes a new domicile (often abroad) and severs ties to the former state. California, New York, Virginia, and Hawaii are particularly aggressive in maintaining taxing jurisdiction over former residents.
Common indicators of continued state residency:
To affirmatively break state residency: terminate or freeze in-state leases, transfer driver's license and voter registration abroad, register vehicles abroad if possible, file part-year state tax return for the departure year, and document the date of departure (utility shut-off notices, lease termination, etc.).
Taxpayers from no-income-tax states (Texas, Florida, Tennessee, Washington, Wyoming, South Dakota, Alaska, Nevada, New Hampshire) avoid the state residency issue entirely.
The U.S. has bilateral income tax treaties with 60+ countries. Treaties typically address: (a) which country has primary taxing right over each income category, (b) reduced withholding rates on dividends, interest, royalties, (c) tie-breaker rules for dual residents, (d) exchange of information between tax authorities. Common treaty benefits relevant to expats:
Claiming treaty benefits requires Form 8833 (Treaty-Based Return Position Disclosure) attached to the income tax return when the treaty benefit reduces U.S. tax by more than $10,000. Failure to disclose can result in a $1,000 penalty per failure ($10,000 for corporations).
For non-military in 2018-2025, yes — TCJA suspended IRC §132(g) and §217. Employer-paid international relocation costs are W-2 taxable wages. Tax gross-ups are standard. Verify current treatment with IRS Publication 521.
$130,000 per qualifying taxpayer (IRS Rev. Proc. 2025-32). $260,000 for MFJ where both qualify. Claimed on Form 2555.
Excludes foreign housing costs above 16% of FEIE ($20,800 floor 2026) up to a cap (standard $39,000; higher for designated cities like Tokyo $74,400, London $72,300, Singapore $87,200).
FinCEN Form 114 filed electronically via BSA E-Filing when foreign financial accounts aggregate exceeded $10,000 at any time during year. Deadline April 15 with auto extension to October 15.
Statement of Specified Foreign Financial Assets, filed with Form 1040. Thresholds: U.S.-resident MFJ $100,000 EOY; abroad MFJ $400,000 EOY. Broader asset coverage than FBAR.
Employer withholds hypothetical home-country tax; pays actual home + host tax; annual true-up reconciles. Costs employer 30-100% of base salary in incremental tax depending on host country.
FTC credits foreign tax paid against U.S. tax. No income cap. Better than FEIE when foreign income exceeds $130k, foreign tax rate exceeds U.S. rate, or claiming passive income.
Yes if state residency not properly broken. CA, NY, VA, HI especially aggressive. Texas/FL/TN/WA/NV residents have no state tax issue.