Form 8992 Schedule A: Per-CFC Inputs and GILTI Inclusion

Form 8992 Schedule A is the per-CFC worksheet where a U.S. shareholder lists each controlled foreign corporation’s tested income or loss, qualified business asset investment, and tested interest figures, then totals those columns so the main Form 8992 can compute the Global Intangible Low-Taxed Income inclusion under IRC Section 951A. Schedule A does the aggregation; Form 8992 does the arithmetic that produces the number flowing into your gross income.¹ Getting the schedule right is almost entirely a matter of pulling the correct inputs from each CFC’s Form 5471 and applying your pro rata share.

Who Has to File Schedule A

You file Form 8992 with Schedule A attached if you are a U.S. person who qualifies as a U.S. Shareholder of at least one controlled foreign corporation during the tax year.¹

A U.S. Shareholder is any U.S. person who owns at least 10% of either the total combined voting power or the total value of all stock in a foreign corporation.² Ownership counts both direct holdings and shares attributed through constructive ownership rules, so the threshold can be met without holding a single share in your own name.

A controlled foreign corporation is any foreign corporation in which U.S. Shareholders collectively own more than 50% of the total voting power or stock value on any day during the corporation’s tax year.³

One boundary worth flagging: partners in domestic partnerships that own CFC stock are generally treated as owning that stock for filing purposes, so individual partners may need to file Form 8992 even though the shares sit at the partnership level.

The Three Numbers You Need Per CFC

Before you touch Schedule A, pull three figures from every CFC you own. All three come from Schedule I-1 of that CFC’s Form 5471.¹

Tested Income or Tested Loss

Tested income starts with the CFC’s gross income and strips out five excluded categories: Subpart F income, effectively connected income, dividends from related persons, foreign oil and gas extraction income, and high-tax excluded income.⁴ From that gross tested income, subtract deductions properly allocable to it. A positive result is tested income; a negative result is tested loss.⁵ A CFC has one or the other for the year, never both. The figure sits on line 6 of Schedule I-1 (Form 5471).

The high-tax exclusion is worth a quick note because it affects what shows up here. If the CFC’s controlling domestic shareholders elect it, income taxed at an effective foreign rate greater than 18.9% (90% of the 21% U.S. corporate rate) is removed from gross tested income entirely and never enters the GILTI calculation.⁵ The election binds all U.S. shareholders of the CFC, not just the ones who wanted it.

Qualified Business Asset Investment

QBAI is the average adjusted tax basis of the CFC’s depreciable tangible property used in its trade or business, calculated as the average of the quarter-end bases divided by four.⁶ The basis must be computed under the alternative depreciation system of Section 168(g), even if the CFC uses a different method for local books or other U.S. reporting. For property placed in service before the GILTI rules took effect in late 2017, recalculate as though ADS had applied from day one. Only tested income CFCs contribute QBAI to the main calculation. A tested loss CFC has zero QBAI for that purpose, though its hypothetical QBAI feeds a separate column on Schedule A.

Tested Interest Expense and Tested Interest Income

These are the CFC’s interest expense and interest income that relate to its tested income. On the aggregate level, the excess of total tested interest expense over total tested interest income becomes “specified interest expense,” which reduces the deemed tangible return in the GILTI computation.⁴ If interest income equals or exceeds interest expense across your CFCs, specified interest expense is zero.

Column-by-Column Walkthrough

Schedule A gives each CFC one row, and the columns move left to right from identification through pro rata shares to the final allocation ratio.¹

Columns (a) and (b): the CFC’s name and its EIN or reference ID number. If the CFC changed names in the past three years, include the former name in parentheses.
Columns (c) and (d): the CFC’s full tested income or tested loss as reported on Schedule I-1 (Form 5471), line 6.
Columns (e) and (f): your pro rata share of that tested income or tested loss.
Column (g): your pro rata share of the CFC’s QBAI, for tested income CFCs only.
Column (h): for any tested loss CFC, your pro rata share of the tested loss QBAI amount, equal to 10% of what its QBAI would have been if it had tested income.
Columns (i) and (j): your pro rata share of tested interest income and tested interest expense.
Column (k): the GILTI allocation ratio, which you compute only after finishing Form 8992 Parts I and II. For each tested income CFC, divide that CFC’s pro rata tested income by the total pro rata tested income across all CFCs.

Line 1 at the top totals each column. Those totals are what Form 8992 actually uses.

How the Totals Produce Your GILTI Inclusion

Form 8992 takes the Schedule A totals and runs three steps.

Step one: subtract the aggregate pro rata share of tested loss (column (f) total) from the aggregate pro rata share of tested income (column (e) total). The result is net CFC tested income.⁴ If losses equal or exceed income, your GILTI inclusion is zero and nothing more needs calculating.

Step two: compute the net deemed tangible income return. Take 10% of the aggregate pro rata QBAI (column (g) total). That rate is set by statute and represents the return on physical assets Congress chose to exempt from GILTI.⁷ From that figure subtract specified interest expense (the excess of column (j) total over column (i) total). The remainder is the net deemed tangible income return, floored at zero.

Step three: subtract the net deemed tangible income return from net CFC tested income. What’s left is your GILTI inclusion amount, which goes into your gross income for the year.⁴

Only now can you fill in column (k) of Schedule A. For each tested income CFC, that CFC’s pro rata tested income divided by the total pro rata tested income gives the ratio used to allocate the inclusion back to specific CFCs for downstream calculations like foreign tax credits.

Filing the Form

Attach Form 8992 with its completed Schedule A to your income tax return and file by the return’s due date, including extensions.⁸ Corporate shareholders attach to Form 1120. Individual shareholders attach to Form 1040.¹ The GILTI inclusion amount flows to the applicable gross income line on your return.

Because every number on Schedule A traces back to a Form 5471, the accuracy of the schedule is only as good as the accuracy of the underlying information returns. Most GILTI errors trace back to incorrect tested income or QBAI figures on Form 5471 rather than to mistakes in the Schedule A aggregation itself.

Fixing a Schedule A That Was Already Filed

If you discover an error after filing, prepare a corrected Form 8992 with a corrected Schedule A, write “Corrected” at the top of the new Form 8992, and attach a statement identifying the specific changes.¹ File it with an amended return following the rules for whichever return you originally used: Form 1040-X for individuals, Form 1120-X or a superseding Form 1120 for corporations.

Common reasons for amending include recalculating QBAI after discovering depreciation was computed under a method other than ADS, revising tested income after reclassifying something as Subpart F, or adjusting pro rata share percentages after reassessing ownership through constructive ownership rules. Because Schedule A aggregates across every CFC you own, a correction to one row usually changes the final inclusion.

Penalty Exposure Through the Underlying 5471s

Form 8992 itself carries no standalone penalty, but the Form 5471 that feeds each row of Schedule A does. A U.S. shareholder who fails to file a required Form 5471, or files one that is substantially incomplete, faces an initial penalty of $10,000 per form. If the failure continues more than 90 days after the IRS sends a notice, another $10,000 accrues for each 30-day period the failure continues, capped at $50,000 of continuation penalty per form. Maximum exposure is therefore $60,000 per CFC, per year.⁹

Reasonable cause is the primary defense, evaluated case by case on factors like natural disasters, inability to obtain records, serious illness, and system failures that blocked timely electronic filing.¹⁰ Simple mistakes, unfamiliarity with the requirement, and reliance on an advisor who dropped the ball generally do not qualify on their own. Where reliance on an advisor is argued, the IRS looks at whether you supplied all necessary information, whether the advisor had genuine international experience, and whether the advice itself was reasonable.

Failing to file Forms 5471 also tolls the statute of limitations on your entire return until the missing forms are filed, which means the IRS can audit indefinitely in the meantime. That alone is reason to complete Schedule A and its underlying 5471s on time even in years when the GILTI inclusion itself works out to zero.

1
Internal Revenue Service. Instructions for Form 8992
2
Legal Information Institute. 26 USC 951(b) – United States Shareholder
3
Office of the Law Revision Counsel. 26 USC 957 – Controlled Foreign Corporations
4
Office of the Law Revision Counsel. 26 USC 951A – Net CFC Tested Income Included in Gross Income of United States Shareholders
5
eCFR. 26 CFR 1.951A-2 – Tested Income and Tested Loss
6
eCFR. 26 CFR 1.951A-3 – Qualified Business Asset Investment
7
GovInfo. 26 USC 951A – Net CFC Tested Income Included in Gross Income of United States Shareholders
8
eCFR. 26 CFR 1.6038-5
9
Internal Revenue Service. Failure to File the Form 5471 – Category 2 and 3 Filers
10
Internal Revenue Service. Penalty Relief for Reasonable Cause