This Schedule M-3 Form 1120 guide explains the IRS Net Income (Loss) Reconciliation for Corporations With Total Assets of $10 Million or More. Schedule M-3 for Form 1120 reconciles financial statement net income or loss with the tax return income calculation for the corporations covered by its instructions. Financial reporting boundaries and tax differences must be identified before the reconciliation is completed.
Reviewed October 31, 2026. This is an independent guide. The version and availability information below identifies the IRS documents used for this page.
What Schedule M-3 Form 1120 does and who prepares it
A corporation covered by the Schedule M-3 rules reconciles its financial statement and income tax reporting.
For the connected reporting route, see Form 1120. Keep the role of that document separate from the task explained on this page.
| Official form | Form 1120 (Schedule M-3) |
|---|---|
| IRS title | Net Income (Loss) Reconciliation for Corporations With Total Assets of $10 Million or More |
| Guide period | the applicable reporting period |
| Target version | Dec 2019 |
| Availability | Current IRS catalog PDF |
| Last checked | October 31, 2026 |
Get the Schedule M-3 Form 1120 PDF and check its status
Use the IRS source to confirm the document before completing a real filing. The download link is a reference to the official file; it is not a statement that every copy inside the PDF may be printed and submitted. Follow any instructions about electronic filing, scannable copies, recipient copies or attachments.
Which version of Schedule M-3 Form 1120 should you use?
This form follows a revision or continuing-use format rather than a new title for every calendar year. Check the revision printed on the document and the period requested inside it. A revision date, transaction date and tax year are different pieces of information. The current document should be read with the instructions that apply to the actual transaction or return.
Records to gather for Schedule M-3 Form 1120
- Corporate financial statements.
- Consolidation details.
- Temporary difference workpapers.
- Permanent difference workpapers.
- Return income and deduction totals.
Keep a working reconciliation with these records. It should show the source of each reported item, any correction made before filing and the reason a different amount appears on a connected form. This is especially useful when a statement is corrected or a prior-year balance continues into the current calculation.
How to work through Schedule M-3 Form 1120
- Confirm applicability. Start with the purpose, filer category and version of the form. Complete any eligibility or applicability question before spending time on the numerical calculation.
- Prepare the source workpapers. Gather the records listed below and reconcile their totals. Keep prior-year balances, current-year transactions and estimated payments separate where they serve different purposes.
- Complete dependent calculations first. When a line refers to another form, schedule or worksheet, finish that supporting calculation first. Preserve any classification, limitation and carryforward information.
- Follow the line sequence. Use the actual line labels and arithmetic in the applicable form. A line number from an older version may refer to something different after a revision.
- Reconcile the filing package. Check names, identifying numbers, tax periods, totals and required attachments. Then use the filing method, signature process and deadline that apply to this filer and form.
Form-specific IRS instructions and reporting details
The following points retain the operative wording of the IRS documents linked above. Read each point with its stated conditions and the applicable form version. References to another form or section describe a connected requirement; they do not mean that every reader must file every referenced document.
Generally, a corporation or group of corporations that files a Form 1120 and is required to file Schedule M-3, must also file Schedule B (Form 1120), Additional Information for Schedule M-3 Filers. In the case of a consolidated group, a parent corporation files one Schedule B (Form 1120) for the entire consolidated group.
Certain corporations or groups of corporations filing Form 1120 that (a) are required to file Schedule M-3 and have less than $50 million in total assets at the end of the tax year, or (b) are not required to file Schedule M-3 and voluntarily file Schedule M-3, are not required to file Schedule B (Form 1120). See the instructions for Schedule B (Form 1120).
Additional reporting conditions
For purposes of Schedule M-3, references to the classification of an entity (for example, as a corporation, a partnership, or a trust) are references to the treatment of the entity for U.S. income tax purposes. An entity that is generally disregarded as separate from its owner for U.S. income tax purposes (disregarded entity) must not be separately reported on Schedule M-3 except, if required, on Part I, line 7a or 7b.
On Schedule M-3, Parts II and III, any item of income, gain, loss, deduction, or credit of a disregarded entity must be reported as an item of its owner. In particular, the income or loss of a disregarded entity must not be reported on Part II, line 9, 10, or 11, as from a separate partnership or other pass-through entity.
The financial statement income or loss of a disregarded entity is included on Part I, line 7a or 7b, only if its financial statement income or loss is included on Part I, line 11, but not on Part I, line 4a.
Calculations and supporting information
The three subgroup sub-consolidation taxable income calculations on Schedule M-3 must follow the separate return requirements of the regulation under section 1502 and all other applicable regulations, taking into account the amounts separately reported on Form 8916. Capital loss limitation and carryforward used and charitable deduction limitation and carryforward used are not taken into account in the determination of the three subgroup sub-consolidated taxable incomes on Schedule M-3, but are reflected on Form 8916 and in the calculation of the life/non-life loss limitation and carryforward used. See Life/Non-Life Loss Limitation and Carryforward Used Calculations, later.
The reconciliation totals for book, temporary difference, permanent difference, and taxable income for each subgroup are reported on Form 1120, 1120-PC, or 1120-L, as applicable, Schedule M-3, Part II, line 29a, columns (a), (b), (c), and (d), and equal the sum of the line amounts on Part II, lines 26 through 28. For a mixed group, Schedule M-3, Part II, lines 29b, 29c, and 30 are blank on the Form 1120, 1120-PC, or 1120-L, as applicable, for the separate corporations (parent and subsidiary) and for the three subgroup sub-consolidations. Note.
A sub-consolidation is required for every subgroup, even if the subgroup consists of only one corporation. In addition, Form 8916-A, if applicable, is required at the sub-consolidated level and the sub-consolidated elimination level.
Exceptions and related reporting
For Part I, lines 1 through 12, use only the financial statements of the U.S. corporation filing the U.S. income tax return (or the consolidated financial statements for the U.S. parent corporation of a U.S. consolidated tax group).
If the U.S. corporation filing a U.S. income tax return (or the U.S. parent corporation of a U.S. consolidated tax group) prepares its own financial statements but is controlled by another corporation (U.S. or foreign) that prepares financial statements that include the U.S. corporation, the U.S. corporation (or the U.S. parent corporation of a U.S. consolidated tax group) must use for its Schedule M-3, Part I, its own financial statements and not the financial statements of the controlling corporation.
If a non-publicly traded U.S. parent corporation of a U.S. consolidated tax group prepares financial statements and that group includes a publicly traded subsidiary that files financial statements with the Securities and Exchange Commission (SEC), the consolidated financial statements of the parent corporation are the appropriate financial statements for purposes of completing Part I. Do not use any separate company financial statements that might be prepared for publicly traded subsidiaries.
Further form details
If a U.S. corporation (a) has net income (loss) included on Part I, line 4a, and removed on Part I, line 6a or 6b, on another U.S. corporation's Schedule M-3; (b) files its own Form 1120 (separate or consolidated); (c) does not have a separate non-tax-basis financial statement (certified or otherwise) of its own; and (d) reports on Schedule L of its own Form 1120 total consolidated assets that equal or exceed $10 million at the end of the corporation's tax year, the corporation must answer questions 1a, 1b, and 1c, of Part I as appropriate for its own Form 1120 and must report on Part I, line 4a, the amount for the corporation's net income (loss) that is removed on Part I, line 6a or 6b, of the other corporation's Schedule M-3.
However, if in the circumstances described immediately above, the corporation does have separate non-tax-basis financial statements (certified or otherwise) of its own, independent of the amount of the corporation's net income included on Part I, line 4a, of the other U.S. corporation, the corporation must answer questions 1a, 1b, and 1c, of Part I, as appropriate, for its own Form 1120, based on its own separate income statement, and must report on Part I, line 4a, the net income amounts shown on its separate income statement.
Further form details
If the corporation does not distinguish between current and deferred income tax expense in its financial statements (or its books and records, if applicable), report income tax expense as current income tax expense using lines 1, 3, and 5, as applicable. A U.S. consolidated tax group must complete lines 1 through 6 in accordance with the allocation of tax expense among the members of the U.S. consolidated tax group in the financial statements (or its books and records, if applicable).
If the current and deferred U.S., state, and foreign income tax expense for the U.S. consolidated tax group (income tax expense) is allocated among the members of the U.S. consolidated tax group in the group's financial statements (or its books and records, if applicable), then each member must report its allocated income tax expense on Part III, lines 1 through 6, of that member's separate Schedule M-3.
However, if the income tax expense is not shared or allocated among members of the U.S. consolidated tax group but is retained in the parent corporation's financial statements (or books and records, if applicable), then amounts are reported only on Part III, lines 1 through 6, of the parent's separate Schedule M-3.
Reading the lines and boxes
These selected labels come from the linked target PDF. They are a reading aid, not a replacement for the full line instructions or a completed calculation. Match the label and document version before transferring any amount.
| Line or box | Label in the source form | What to check |
|---|---|---|
| 1a | Did the corporation file SEC Form 10-K for its income statement period ending with or within this tax year? | Use the date or tax period requested by this particular field. A payment date, acquisition date and return year can describe different facts. |
| 2a | Enter the income statement period: Beginning | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 3a | Is any of the corporation’s voting common stock publicly traded? | Check the applicable line instructions and keep the source workpaper with the return records. Transfer only the information that matches the field and reporting period. |
| 4a | Worldwide consolidated net income (loss) from income statement source identified in Part I, line 1 . | Use the identity of the person or entity requested on this line. Check that the name and identification number agree with the underlying tax records. |
| 5a | Net income from nonincludible foreign entities (attach statement) | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
Further selected fields
| Line or box | Label in the source form | What to check |
|---|---|---|
| 6a | Net income from nonincludible U.S. entities (attach statement) | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 7a | Net income (loss) of other includible foreign disregarded entities (attach statement) | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 8 | Adjustment to eliminations of transactions between includible entities and nonincludible entities (attach | Check the applicable line instructions and keep the source workpaper with the return records. Transfer only the information that matches the field and reporting period. |
| 9 | Adjustment to reconcile income statement period to tax year (attach statement) | Use the date or tax period requested by this particular field. A payment date, acquisition date and return year can describe different facts. |
| 10a | Intercompany dividend adjustments to reconcile to line 11 (attach statement) | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
A practical example
A corporation closes its financial statements and prepares tax adjustments. Its preparer checks the reporting entity boundaries and places the supported differences in the required reconciliation categories.
This example illustrates the order of the review. It does not assume an unverified deduction, exemption, treaty rate or final tax amount. The applicable form instructions and the actual records determine the result.
Common mistakes to avoid with Schedule M-3 Form 1120
- Check whether M-3 is required or another reconciliation route applies.
- Reconcile financial reporting totals first.
- Keep the different types of book-to-tax differences identifiable.
Questions about Schedule M-3 Form 1120
Does receiving or downloading this form mean I must file it?
A corporation covered by the Schedule M-3 rules reconciles its financial statement and income tax reporting. The form purpose and the applicable filing or furnishing conditions determine the action. Downloading a blank PDF does not itself create a filing obligation or establish eligibility for a tax benefit.
Is the revision date always the same as the tax year?
No. Some forms show a tax year, while continuing-use forms show a revision date and ask separately for the reporting period. Check the actual document and instructions. Do not relabel a payment or transaction solely because it was reported in a later calendar year.
What should I do if the underlying information is wrong?
Check whether M-3 is required or another reconciliation route applies. Keep the original record and the correction trail. The issuer correction process, an amended return and an updated certificate can be different procedures. Choose the process that matches the document and the actual error.
Which records should I keep with the completed form?
Retain the source documents, applicable worksheets, submitted version and filing or furnishing confirmations. For this form, the working file should include corporate financial statements, consolidation details, temporary difference workpapers. Keep continuing balances and prior-year support for as long as they remain relevant under the applicable recordkeeping rules.
Related forms and next steps
Use these guides when the connected issue applies to your records. Each page has its own purpose, reporting year and availability status.