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Official form guide
IRS Form 8916A is a Supplemental Attachment to Schedule M-3 that provides detailed amounts for cost of goods sold, interest income, and interest expense. It must be filed by entities required to file Schedule M-3.
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IRS Form 8916A is a Supplemental Attachment to Schedule M-3 that provides detailed amounts for cost of goods sold, interest income, and interest expense. It must be filed by entities required to file Schedule M-3.
Plain English
This form helps detail the numbers reported on Schedule M-3. It specifically breaks down differences related to how a company calculates its cost of goods sold, as well as various types of interest earned or paid during the tax year.
Submission Date
AI co-pilot
Form selector
Filing as a Partnership (Form 1065)
Required to file for each separate entity that needs Schedule M-3.
✓ Check Part I, Line 8 totals.
Filing as C Corp or S Corp with Mixed Group
A copy is required at the sub-consolidated and sub-consolidated elimination levels for a mixed group.
✓ Verify if you need to attach this form multiple times.
Reporting Lease vs Sale Interest Income (Form 1120)
Use this attachment when reporting interest income/expense from transactions characterized as lease vs sale for tax purposes.
✓ Confirm which line (3 or 4a) applies to your transaction type.
The filing trigger is the requirement to file an applicable Schedule M-3. The form must be attached to that schedule, with no specific extension date mentioned in this excerpt. If using Form 1120, Part III, Line 8, the detail supports the overall required reporting.
Checklist
Part I, Line 1 (Cost Flow Assumptions)
Amounts attributable to cost flow assumptions · Part I of Form 8916-A
Line 2n (Purchasing/Storage Costs)
Differences due to purchasing, and storage and handling costs · Line 2n on Form 8916-A
Line 3, Column (d) (Sale vs Lease Interest Income)
Total interest income from periodic payments characterized as sale for financial accounting and lease for tax purposes · Line 3 on Form 8916-A
Line 4a (Intercompany Interest Income)
Total intercompany interest income from an entity included on Schedule M-3, Part I, line 4, but not on line 11 · Line 4a on Form 8916-A
Part I, Line 6 (Other Items)
Statement detailing nature and amount of each expense reported on line 6 · Attached statement referenced on Form 8916-A
Field map
Entity Info
1 items
Name and taxpayer ID of the entity claiming the credit.
Credit Info
1 items
Type of credit or incentive being claimed.
Calculation
2 items
The base amount used to calculate the credit.
Calculated credit amount after applying formulas and limitations.
Certification
1 items
Detailed breakdown supporting the credit calculation.
Signatures
1 items
Sign and date the form.
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Fillable formOpen in Editor->The current edition is Revision November 2019 (Rev. 11-2019). The official source directs filers to www.irs.gov/Form1120 for the latest information regarding developments related to Form 8916-A.
Quick Facts
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Which line on Part I reports differences in LIFO reserves between book and tax purposes?
Line 1 is used to report differences attributable to cost flow assumptions.
→ Generally, differences in the LIFO reserves for book and tax purposes should be reported on this line.
Where do you report differences related to Section 263A costs?
These are reported on Line 2n, which covers differences attributable to section 263A.
→ Report differences between section 471 inventory costs and section 263A inventory costs on this line.
What should go on Line 7 if all other items have no difference?
If book inventory costs equal section 471 inventory costs, Line 7 reports total book inventory and section 471 inventory costs without regard to amounts reported on lines 1 through 5.
→ Check the instructions for your applicable Schedule M-3 for confirmation.
What amount must be reported on Line 8?
Line 8 must equal specific amounts from other schedules depending on which form is being filed (e.g., Form 1120, Part II, line 17).
→ Verify the exact source line based on your Schedule M-3.
Must I file this form if my entity is a mixed group?
Yes, if applicable, Form 8916-A is required at both the sub-consolidated level and the sub-consolidated elimination level for mixed groups.
→ Review the instructions for the applicable Schedule M-3 to confirm.
What happens with Part I, line 6 detail when filing a consolidated group?
The supporting detail for Part I, line 6 is not required for the eliminations Schedule M-3 or the consolidated Schedule M-3.
→ This applies even if you are filing as part of a consolidated tax group.
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Often used with
This form helps detail the numbers reported on Schedule M-3. It specifically breaks down differences related to how a company calculates its cost of goods sold, as well as various types of interest earned or paid during the tax year.
Generally, Form 8916A must be filed for each separate entity required to file a Schedule M-3 for Form 1065, Form 1120, Form 1120-C, Form 1120-L, Form 1120-PC, or Form 1120-S. Certain entities with less than $50 million in total assets may voluntarily file it.
The form collects detailed information across several areas: Part I covers Cost of Goods Sold differences (Lines 1 through 8), and subsequent lines detail specific interest income and expense amounts, such as intercompany transactions on Line 3a/3b. Part III requires reporting totals from other Schedule M-3 parts.
The source does not specify a due date; rather, it dictates that the form must be attached to each applicable separate Schedule M-3 for the relevant tax year.
The instructions do not state a specific mailing address or service center. The filer attaches Form 8916A to each applicable separate Schedule M-3.
The filer must complete all columns without exception if Parts II and III of Schedule M-3 (Form 1120) are completed. The process involves detailing cost flow assumptions on Part I, Line 1, reporting specific interest amounts across Lines 3, 4a, 3a, 3b, and 5, and finally summarizing totals in Part III.
If information is incorrect, the IRS may use it to figure and collect the wrong amount of tax due from the entity.
Line 1 is used to report differences attributable to cost flow assumptions. Generally, differences in the LIFO reserves for book and tax purposes should be reported on this line.
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