When do I need to file Form 8992 for GILTI, and what schedules are required?

Form 8992 must be filed by any U.S. shareholder (as defined under IRC 951(b)) of one or more CFCs who has a GILTI inclusion amount for the tax year, or who needs to compute their GILTI to determine whether they have an inclusion. In practice, if you are a 10%-or-greater U.S. shareholder of a CFC and the CFC has any tested income, you should file Form 8992 to document your GILTI calculation, even if the result is zero after subtracting the net DTIR. Filing the form demonstrates compliance and supports the numbers on your income tax return.

Form 8992 draws data from Form 5471, which is the information return for U.S. persons who are officers, directors, or shareholders of certain foreign corporations. Specifically, Schedule I-1 of Form 5471 reports each CFC's tested income (or tested loss) and QBAI. The totals from Schedule I-1 across all of your CFCs flow into Form 8992. You must file a separate Form 5471 for each CFC, but only one Form 8992 that aggregates the GILTI computation across all CFCs.

Form 8992 is attached to the U.S. shareholder's income tax return — Form 1120 for domestic corporations, Form 1040 for individuals, or Form 1065 for partnerships. It is due on the same date as the underlying tax return, including extensions. There is no separate filing deadline. The GILTI inclusion amount computed on Form 8992 is reported as other income on the relevant return.

While Form 8992 itself does not carry a standalone penalty, failure to file the underlying Form 5471 does. The penalty for failure to file Form 5471 is $10,000 per form, per year, with additional penalties of $10,000 per month (up to $60,000) for continued non-filing after IRS notice. Since Form 5471 provides the data that feeds Form 8992, non-compliance with Form 5471 effectively makes it impossible to properly report GILTI. Additionally, underreporting income due to an incorrect or missing GILTI calculation can trigger accuracy-related penalties under IRC 6662.

Frequent errors include: (1) failing to file Form 5471 Schedule I-1 for each CFC, which is required even if the CFC has a tested loss; (2) not aggregating QBAI correctly when multiple CFCs are involved; (3) forgetting that the specified interest expense reduction applies to the DTIR calculation; and (4) confusing GILTI tested income with Subpart F income — they are separate categories reported on different lines of Form 5471 Schedule I. Ensure your CPA or tax software handles the aggregation correctly across all CFCs.