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Schedule I exists to answer one narrow question: how much of a corporation's foreign oil and gas taxes the credit cannot reach. Section 907(a) caps the creditable amount at 21% of combined foreign oil and gas income, the highest section 11(b) rate, and the excess is the reduction you carry to Schedule G of the parent Form 1118.
The error that costs the most is quiet. Filers limit the 21% base to extraction income alone, when the statute means combined foreign oil and gas income, including the related FORI and section 951(a) and 951A inclusions. Get the base wrong and a six-figure credit overstatement can sit in the file until an examiner finds it, because Schedule I never corrects itself on extension.
Key Takeaways
- What it does: Schedule I computes the Section 907(a) reduction in creditable foreign oil and gas taxes – the amount by which those taxes exceed 21% (the highest Section 11(b) rate) of the corporation's combined foreign oil and gas income.
- Who files it: U.S. corporations filing Form 1118 that have paid or accrued oil and gas extraction taxes to a foreign country, whether directly or through controlled foreign corporations.
- Key deadline: Filed as part of Form 1118 attached to Form 1120 – due April 15 for calendar-year corporations, with extensions available to October 15.
- Main pitfall: Limiting the Section 907(a) base to FOGEI alone (it is combined foreign oil and gas income, including FORI and Section 951(a)/951A inclusions) or computing the reduction country by country instead of on combined income netted across all countries.
- Carryover rule: Section 907(f) and Reg. §1.907(f)-1 let disallowed foreign oil and gas taxes be carried back and forward; in an unused credit year Section 907(f) is applied before Section 904(c), and current-year usage is tracked in Part III.
- SOP tip: Pull country-level OGET data from the same source every year and reconcile it against financial statement foreign tax disclosures before beginning the Schedule I computation.
What Form 1118 Schedule I Is and When to Use It
Form 1118 Schedule I is the Reduction of Foreign Oil and Gas Taxes attachment to Form 1118 (Foreign Tax Credit – Corporations). Congress enacted IRC Section 907 to prevent U.S. oil companies from using artificially high foreign extraction tax payments – which foreign governments sometimes structured to look like taxes but functioned like royalties – to fully offset their U.S. tax liability.
The basic structure: Section 907(a) caps the foreign oil and gas taxes a corporation can credit at 21% (the highest Section 11(b) corporate rate) of its combined foreign oil and gas income; any taxes above that ceiling are reduced out of the credit. Schedule I does the math to determine how much of the OGET is creditable and how much must be reduced from total creditable foreign taxes before the Section 904 FTC limitation applies.
Who Files Schedule I
Schedule I is required for any U.S. corporation that has paid or accrued OGET, and it must be completed in every such year even when the resulting reduction works out to zero (you report a zero reduction rather than skipping the schedule). This most commonly applies to corporations with direct foreign oil and gas operations and those with CFCs engaged in foreign oil and gas extraction income (FOGEI). Post-TCJA, it also applies when OGET enters the Section 960 deemed-paid credit computation for GILTI inclusions.
How the Section 907(a) Limit Is Computed
The Section 907(a) limit is not a royalty-rate test. It caps the creditable foreign oil and gas taxes at 21% (the highest Section 11(b) rate) of the corporation's combined foreign oil and gas income. That combined income is netted across all countries: a taxable loss in one foreign country offsets taxable income from others when you total Part I, column 10. The reduction equals total foreign oil and gas taxes (Part I, column 13) minus that 21% product, or zero if the result is negative.
How to Complete Form 1118 Schedule I, Line by Line
Schedule I nets combined foreign oil and gas income across all countries into a single Section 907(a) reduction, figured on Part II, line 4, and carried to Schedule G, line B of Form 1118. Here is a practical walkthrough of the key computation steps.
| Line / Step | What to Compute | Practitioner Notes |
|---|---|---|
| Country identification | Identify each foreign country in which OGET was paid or accrued | A separate Schedule I is filed for each separate category of income (951A, FB, PAS, 901j, GEN); within one Schedule I, each country is entered on its own line in Part I, column 1(b), using the IRS two-letter country code. |
| OGET paid or accrued | Total oil and gas extraction taxes paid or accrued to the identified foreign government | Must be segregated from all other foreign taxes. Country-specific production taxes and windfall profit taxes that qualify under IRC 901 need careful identification. |
| Net income from FOGEI | Foreign oil and gas extraction income attributable to the country, net of allocable deductions | Part II, line 1, is not FOGEI alone – it is combined foreign oil and gas income (FOGEI plus FORI plus Section 951(a)/951A inclusions and other amounts, net of allocable deductions), reduced by any Section 907(c)(4) recapture. |
| Part II, line 1 (combined income) | Total of Part I, column 10, netted across all countries, minus any Section 907(c)(4) recapture | This is combined foreign oil and gas income (FOGEI + FORI + Section 951(a)/951A inclusions + other, net of deductions), not FOGEI alone. |
| Part II, line 2 (21% ceiling) | Multiply line 1 by 21%, the highest Section 11(b) corporate rate | 21% for tax year 2025, not the pre-TCJA 35%. This sets the maximum creditable foreign oil and gas taxes. |
| Part II, line 3 (total taxes) | Total foreign oil and gas taxes from Part I, column 13 | Paid or accrued (column 11) plus deemed paid (column 12). |
| Part II, line 4 (reduction) | Subtract line 2 from line 3; if zero or less, enter -0- | Enter here and on Schedule G, line B, of the corresponding Form 1118. Section 907(f) permits carryover of the disallowed amount. |
Aggregation Rules and Multiple Countries
The Section 907(a) reduction is computed once on combined foreign oil and gas income, not separately per country. When you total Part I, column 10, a taxable loss from one foreign country offsets taxable income from other countries, and the single resulting reduction (Part II, line 4) is carried to Schedule G, line B of Form 1118.
Deadlines, Penalties, and Filing Requirements
Schedule I has no independent filing deadline – it is filed as part of Form 1118 attached to Form 1120. The relevant deadlines are those governing the corporate return.
| Event | Deadline | Notes |
|---|---|---|
| Form 1120 with Schedule I attachment | April 15 (calendar year) or 15th day of 4th month after fiscal year-end | Schedule I is filed as part of Form 1118, attached to Form 1120 |
| Automatic extension (Form 7004) | Extends to October 15 (calendar year) | Extension extends time to file, not time to pay; interest accrues on underpayments |
| FTC election under IRC 901 | Made on timely filed return (including extensions); under IRC 6511(d)(3) the FTC election itself may also be made or changed at any time within a special 10-year period, not just the standard 3-year refund window | An incorrect Schedule I can affect the overall value of the FTC election for the year |
| Amended return to correct OGET reduction error | Generally within 3 years of original filing date | File before IRS discovers an error to preserve reasonable cause and good faith penalty defenses |
| Statute of limitations – FTC refund claims | 10-year period under IRC 6511(d)(3) | Longer period applies specifically to FTC refund claims; relevant after foreign tax redeterminations |
Penalty Exposure for Incorrect Schedule I
An overstated FTC from an understated OGET reduction can trigger the accuracy-related penalty under IRC 6662 (20% of underpayment). In egregious cases, the civil fraud penalty at 75% may apply. Getting Schedule I right matters not just for the credit amount, but for the full penalty exposure landscape.
Section 907 in the Post-TCJA Environment
The Tax Cuts and Jobs Act of 2017 introduced GILTI and modified Section 960, but did not eliminate Section 907. The OGET reduction rules continue to apply wherever FOGEI enters the deemed-paid credit computation.
GILTI and OGET
If a U.S. parent includes GILTI from CFCs with FOGEI, the OGET paid by those CFCs enters the Section 960(d) deemed-paid credit pool. The Section 907(a) reduction must be applied to those foreign oil and gas taxes before the GILTI foreign tax credit is computed. Skipping this step overstates the GILTI FTC – a specific examination risk the IRS has flagged in post-TCJA audit cycles.
High-Tax Exclusion Interactions
Regulations under Section 954(b)(4) provide a high-tax exclusion for CFC income taxed above 18.9%. Oil and gas income subject to high OGET rates may qualify for this exclusion, removing the income and taxes from the GILTI computation entirely. Whether to use the high-tax exclusion or take the FTC (subject to Section 907) requires case-by-case analysis – there is no universal right answer and the planning window closes once the return is filed.
Documentation and Workpaper Standards for Schedule I
Schedule I is examination-sensitive because the underlying data – country-level income, deductions, and foreign taxes – is often sourced from non-U.S. financial statements. My team treats the Schedule I workpaper as a first-class audit document.
Essential Workpaper Components
- Source documents for the foreign oil and gas taxes paid or accrued (foreign tax returns, government receipts, or audited financial statements)
- Build-up of combined foreign oil and gas income (FOGEI, FORI, and Section 951(a)/951A inclusions) with the deduction allocation methodology under the Section 861 regulations
- Documentation of any Section 907(c)(4) recapture applied to Part II, line 1
- The 21% Section 907(a) limit computation (Part II, line 2) and the resulting reduction on line 4, with supporting data sources identified and dated
- Reconciliation of the foreign oil and gas tax amounts on Schedule I to amounts on Form 1118 Parts I and II
- Currency translation documentation showing exchange rate source and computation
Currency Translation
OGET paid in a functional currency other than USD must be translated into USD using the average exchange rate for the tax year under IRC 986(a). Using a spot rate or year-end rate instead of the average rate is a common error that changes both the gross OGET figure and the Section 907(a) reduction. Document the exchange rate source every year.
Common Mistakes That Slow Things Down
Most Schedule I problems I see are not arithmetic slips. They come from misreading what the Section 907(a) limit actually measures and which revision and categories apply for the year.
Practical Checklists You Can Reuse
These are copy-paste ready for a firm SOP. Drop them into your workpaper index and tick each item before a reviewer signs off on the Section 907 computation.
Category and revision setup
- Confirm you are pairing Schedule I (Form 1118), Rev. December 2021, with the December 2025 Form 1118 for tax year 2025.
- Open one Schedule I per separate category of income (951A, FB, PAS, 901j, GEN, or an RBT code).
- Match the line a category code on each Schedule I to its parent Form 1118.
- If line a is 901j, enter the sanctioned-country code on line b (Iran, North Korea, Sudan, or Syria per the December 2025 instructions).
- Verify every amount is reported in U.S. dollars and attach an exchange-rate statement wherever currency was converted.
Part I to Part II computation
- Populate Part I columns 2 through 5 (FOGEI, FORI, Section 951(a)/951A inclusions with the Section 78 gross-up, and other).
- Allocate and apportion deductions into columns 7 and 8 under the Section 861 regulations.
- Total Part I, column 10 (column 6 minus column 9), netting losses across countries.
- Carry the column 10 total, reduced by any Section 907(c)(4) recapture, to Part II, line 1.
- Multiply Part II, line 1, by 21% on line 2, then subtract from total taxes (column 13) on line 3 to get the line 4 reduction.
- Enter the Part II, line 4, reduction on Schedule G, line B, of the corresponding Form 1118.
Carryover and reviewer handoff
- Compute Part III, line 1 (excess Section 907(a) limitation); if zero or less, enter -0- and stop.
- Attach a schedule detailing any oil and gas tax carryover entered on Part III, line 2.
- Apply Section 907(f) before Section 904(c) when ordering carryovers in an unused credit year.
- Carry Part III, line 3, to Schedule B, Part II, line 5, of Form 1118.
- Confirm any Section 960(d)(4) 10% PTEP disallowance is on Schedule G, line H, not on Schedule I.
- Reconcile Schedule I totals to Form 1118 Parts I and II before the reviewer signs.
Keep Schedule I (Form 1118) Season From Stalling
Schedule I rarely stalls because the arithmetic is hard. It stalls because the inputs (country-level FOGEI, FORI, Section 951(a) and 951A inclusions, and the foreign taxes behind them) arrive late, in foreign currency, and spread across every separate category the corporation files. A missing or incomplete schedule carries a $10,000 penalty under Section 6038(c), per the Instructions for Form 1118 (Rev. December 2025), so it cannot be the piece left until the October extension deadline.
The fix is to treat Schedule I as a year-round data pipeline rather than a return-season computation. When the column 10 build, the Section 907(c)(4) recapture check, and the carryover ordering are standardized and staffed ahead of the deadline, the 21% Section 907(a) ceiling falls out cleanly and the reduction ties to Schedule G without a scramble.
- Lock the data sources for each category early: gross FOGEI (column 2), FORI (column 3), and Section 951(a)/951A inclusions with the Section 78 gross-up (column 4).
- Stand up a recurring reconciliation so Part I, column 13, foreign oil and gas taxes tie to the foreign tax records before Part II, line 1, is built.
- Track the Section 907(c)(4) recapture and the Section 907(f) carryover ordering in a workpaper that survives staff turnover.
- Flag any new Section 960(d)(4) 10% PTEP disallowance for Schedule G, line H, so it is not confused with the Section 907(a) reduction on line B.
- Confirm the December 2021 Schedule I is paired with the December 2025 Form 1118 for every separate category before review.
That structure is what we build for organizations carrying recurring international compliance: documented SOPs, a multi-layer review of every Section 907 computation, and turnaround that holds through the busy cycle. See how our tax execution support keeps foreign tax credit work moving without overloading senior reviewers.
FAQs
What is Form 1118 Schedule I?
Form 1118 Schedule I is the Reduction of Foreign Oil and Gas Taxes schedule attached to Form 1118 (Foreign Tax Credit – Corporations). It applies the Section 907(a) limit, which caps the creditable foreign oil and gas taxes at 21% (the highest Section 11(b) rate) of the corporation's combined foreign oil and gas income. The reduction is figured on Part II, line 4, and carried to Schedule G, line B of Form 1118.
Who must complete Form 1118 Schedule I?
Any U.S. corporation filing Form 1118 that has paid or accrued oil and gas extraction taxes to a foreign country must complete Schedule I. This includes corporations with direct foreign oil and gas operations and those with CFCs engaged in FOGEI. Post-TCJA, this also includes situations where OGET enters the Section 960 deemed-paid credit computation for GILTI inclusions.
What is the OGET reduction rule under IRC Section 907?
Under IRC Section 907(a), the foreign oil and gas taxes a corporation can credit are capped at 21% (the highest Section 11(b) rate) of its combined foreign oil and gas income, computed on a single combined basis netted across all countries – not country by country. Taxes above that ceiling are reduced out of the current-year credit, but Section 907(f) lets the disallowed amount be carried back and forward (tracked in Part III). The combined income base includes FOGEI, FORI, and Section 951(a)/951A inclusions, net of deductions and Section 907(c)(4) recapture.
Can excess OGET be carried over or back?
Yes. Section 907(f) and Reg. §1.907(f)-1 provide a carryback and carryover for foreign taxes on combined foreign oil and gas income. In an unused credit year subject to both Section 907(f) and Section 904(c), Section 907(f) is applied before Section 904(c), and the current-year usage of any oil and gas tax carryover is computed in Part III, line 3, then carried to Schedule B, Part II, line 5, of Form 1118.
How does Schedule I interact with GILTI and Section 960?
If a U.S. parent includes GILTI from CFCs with FOGEI, the OGET paid by those CFCs enters the Section 960(d) deemed-paid credit pool. The Section 907(a) reduction (21% of combined foreign oil and gas income) must be applied to those foreign oil and gas taxes before the GILTI foreign tax credit is computed. Skipping that step overstates the credit on the GILTI inclusion.