IRS Form 5471 (Schedule I-1) – IRS Forms, Instructions, Pubs 2026 – If you’re a U.S. taxpayer with ownership in a foreign corporation, navigating IRS reporting requirements can be complex. One key component is IRS Form 5471, particularly Schedule I-1, which focuses on Global Intangible Low-Taxed Income (GILTI). This schedule ensures that U.S. shareholders report and pay taxes on certain foreign earnings to prevent profit shifting to low-tax jurisdictions. In this SEO-optimized article, we’ll break down what Schedule I-1 is, who needs to file it, how to complete it, recent updates including the transition to Net CFC Tested Income (NCTI), and more. Whether you’re an expat business owner or a tax professional, this guide will help you stay compliant.
What Is IRS Form 5471 and Schedule I-1?
IRS Form 5471, titled “Information Return of U.S. Persons With Respect to Certain Foreign Corporations,” is an informational filing required for U.S. persons with significant interests in foreign corporations. It’s not a tax payment form but provides the IRS with details about the foreign entity’s operations, ownership, and financials to enforce U.S. tax rules like Subpart F and GILTI.
Schedule I-1, specifically “Information for Global Intangible Low-Taxed Income,” is attached to Form 5471 and reports data used to calculate a U.S. shareholder’s GILTI inclusion under Section 951A of the Internal Revenue Code. GILTI targets income from intangible assets (like patents or trademarks) held abroad, taxing it at an effective rate of 10.5% for corporations (pre-2026), even if not distributed. The schedule computes the controlled foreign corporation’s (CFC’s) tested income, exclusions, deductions, and adjustments, which feed into Form 8992 for the final GILTI calculation.
Key elements of Schedule I-1 include:
- Header: Name of filer, foreign corporation details, EIN, reference ID, separate category code (e.g., GEN for general or PAS for passive), functional currency, and conversion rate to U.S. dollars.
- Core Calculations: Lines for gross income, exclusions (e.g., effectively connected income, Subpart F income), deductions, tested income/loss, foreign taxes, qualified business asset investment (QBAI), and net interest expense/income.
What Is Global Intangible Low-Taxed Income (GILTI)?
GILTI, introduced by the 2017 Tax Cuts and Jobs Act (TCJA), is a anti-deferral provision that requires U.S. shareholders of CFCs to include certain foreign earnings in their U.S. taxable income annually. It applies to income exceeding a 10% return on tangible assets (QBAI), assuming the excess comes from intangibles.
Starting in 2026, under the One Big Beautiful Bill Act (OBBBA), GILTI has been rebranded and modified to Net CFC Tested Income (NCTI). Key differences between GILTI and NCTI include:
- Elimination of QBAI Exclusion: NCTI taxes all tested income without the 10% return on tangible assets, potentially increasing the tax base.
- Section 250 Deduction: Reduced from 50% to 40%, raising the effective corporate rate to 12.6%.
- Foreign Tax Credit (FTC): Increased from 80% to 90% of foreign taxes paid, providing more relief in high-tax jurisdictions.
- Broader Impact: NCTI may affect more capital-intensive CFCs that previously had minimal GILTI.
Despite the name change, Schedule I-1 retains its title but has been updated to reflect NCTI terminology, including the removal of QBAI calculations for tax years beginning after December 31, 2025.
Who Needs to File Schedule I-1?
Not every Form 5471 filer needs Schedule I-1. It’s required for:
- Category 4 Filers: U.S. persons who control a foreign corporation for at least 30 days during the tax year.
- Category 5a Filers: U.S. shareholders owning at least 10% of a CFC.
- Category 5b Filers: Unrelated U.S. shareholders of foreign-controlled CFCs.
A separate Schedule I-1 must be filed for each applicable U.S. shareholder. If the CFC has both general and passive category income, they can now be reported on a single schedule (change effective for 2025/2026 filings). File even if amounts are zero.
The due date aligns with your U.S. tax return (e.g., April 15, 2026, for 2025 tax year), with extensions available.
How to Fill Out Schedule I-1: Step-by-Step Overview?
Completing Schedule I-1 requires data from the CFC’s financials, often in functional currency converted to U.S. dollars using average exchange rates. Always consult the official IRS instructions and a tax professional, as errors can lead to penalties.
Key Lines Explained
Here’s a breakdown based on the form’s structure:
| Line | Description | What to Report |
|---|---|---|
| 1 | Gross Income | Total gross receipts; adjust if COGS exceeds receipts. |
| 2a-2e | Exclusions | Subtract items like U.S.-source effectively connected income (2a), Subpart F income (2b), high-tax exception income (2c), related party dividends (2d), and foreign oil/gas income (2e). |
| 3 | Total Exclusions | Sum of lines 2a-2e. |
| 4 | Adjusted Gross Income | Line 1 minus line 3. |
| 5 | Allocable Deductions | Expenses tied to line 4 income, including taxes. |
| 6 | Tested Income/Loss | Line 4 minus line 5; convert to USD and note category (GEN or PAS). |
| 7 | Tested Foreign Income Taxes | Taxes attributable to tested income; in USD. |
| 8 | QBAI (Pre-2026) | Average quarterly basis in tangible property; eliminated under NCTI. |
| 9a-9d | Tested Interest Expense | Interest in deductions (9a) minus qualified portions (9b, 9c). |
| 10a-10c | Tested Interest Income | Interest in income (10a) minus qualified (10b). |
Use Worksheet A from the instructions for Subpart F details, which integrate with these lines. For 2026 and beyond, omit QBAI and apply NCTI rules.
Recent Changes and Updates for 2026
The OBBBA introduces significant shifts:
- No more 1-month deferral for SFC tax years.
- Pro rata share transition rules for certain dividends.
- Schedule I-1 updates eliminate QBAI and use NCTI terms.
Check IRS Notices like 2025-72 and 2025-75 for guidance.
Penalties for Non-Compliance
Failing to file Form 5471 and its schedules can result in $10,000 penalties per year, increasing to $50,000 if not corrected after IRS notice. Additional penalties apply for incomplete or inaccurate information.
Conclusion: Stay Compliant with Expert Help
IRS Form 5471 Schedule I-1 is crucial for reporting GILTI (now NCTI) and ensuring U.S. tax on foreign intangible income. With 2026 changes expanding the tax base, timely and accurate filing is essential. Download the latest form from the IRS website and consult a tax advisor for personalized advice.
For the official PDF: IRS Form 5471 Schedule I-1.