This Schedule K1 Form 1120-S 2026 guide explains the IRS Shareholder's Share of Income, Deductions, Credits, etc.. Schedule K-1 for Form 1120-S reports the shareholder share of S corporation items. Shareholder basis and other applicable limitations can affect a loss deduction. The statement should be read together with its attachments and the shareholder ownership, loan and distribution records.
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 K1 Form 1120-S 2026 does and who prepares it
An S corporation prepares the shareholder statement; the shareholder determines its own return treatment.
For the connected reporting route, see Form 1120-S. Keep the role of that document separate from the task explained on this page.
| Official form | Form 1120-S (Schedule K-1) |
|---|---|
| IRS title | Shareholder's Share of Income, Deductions, Credits, etc. |
| Guide period | 2026 |
| Target version | 2026 |
| Availability | Draft — not for filing |
| Last checked | October 31, 2026 |
Get the Schedule K1 Form 1120-S 2026 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 K1 Form 1120-S 2026 should you use?
The 2026 in the title identifies the tax year or calendar-year information addressed by this guide. For a 2026 income reporting document, the preparation or filing activity may occur in 2027. Do not change the income year simply because the calendar has changed. The exact filing or furnishing date comes from the instructions for this form and the filer circumstances. The linked target PDF is a draft. It may be used to understand the proposed layout, but it is not a form to file. Amounts or instructions still subject to completion must be checked again when the final version is released.
Records to gather for Schedule K1 Form 1120-S 2026
- Shareholder statement.
- Stock and debt basis records.
- Distributions.
- Separately stated item attachments.
- Prior suspended losses.
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 K1 Form 1120-S 2026
- 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.
Shareholder’s Instructions for Schedule K-1 (Form 1120-S) Shareholder’s Share of Income, Deductions, Credits, etc. (For Shareholder’s Use Only) Section references are to the Internal Revenue Code unless otherwise noted.
Generally, you must report corporate items shown on your Schedule K-1 (and any attached statements) the same way that the corporation treated the items on its return.
If you are the executor of an estate and you have received a decedent’s Schedule K-1, then you have the responsibility to notify the S corporation of the name and taxpayer identification number of the decedent’s estate if the S corporation stock is part of a decedent’s estate. This is information that the S corporation must have to properly determine its eligibility to maintain status as a subchapter S corporation.
If a decedent died in a prior year and the S corporation continues to send the decedent a Schedule K-1 after being notified of the decedent’s death, then you should request that the S corporation send a corrected Schedule K-1. If you receive an interest in an S corporation by reason of a former shareholder’s death, you must provide the S corporation with your name and TIN. For treatment of S corporation income upon the death of a shareholder, see Pub. 559, Survivors, Executors, and Administrators.
Additional reporting conditions
3. The rental of a dwelling unit any shareholder used for personal purposes during the year for more than the greater of 14 days or 10% of the number of days that the residence was rented at fair rental value. 4. Activities of trading personal property for the account of owners of interests in the activities. If you have a passive activity loss or credit, use Form 8582, Passive Activity Loss Limitations, to figure your allowable passive losses, and Form 8582-CR, Passive Activity Credit Limitations, to figure your allowable passive credits.
See the instructions for these forms for details. If the corporation has more than one activity, it will attach a statement to your Schedule K-1 that identifies each activity (trade or business activity, rental real estate activity, rental activity other than rental real estate, portfolio income, etc.) and specifies the income (loss), deductions, and credits from each activity. Note: Box 19 of Schedule K-1 will be checked when a statement is attached. Material participation.
You must determine if you materially participated (a) in each trade or business activity held through the corporation; and (b) if you were a real estate professional (defined earlier), in each rental real estate activity held through the corporation.
Caution: If you have amounts other than those shown on Schedule K-1 to report on Schedule E (Form 1040), enter each item separately on Schedule E (Form 1040), line 28.
Calculations and supporting information
The amount in box 3 is a passive activity amount for all shareholders. If the corporation had more than one rental activity, it will attach a statement identifying the income or loss from each activity. After applying the limitations on losses and deductions, report the income or loss as follows. 1. If box 3 is a loss, follow the Instructions for Form 8582 to figure how much of the loss can be reported in column (g) of Schedule E (Form 1040), line 28. 2.
If income is reported in box 3, report the income in column (h) of Schedule E (Form 1040), line 28. See Limitations on Losses, Deductions, and Credits, earlier.
Exceptions and related reporting
However, an amount from a rental real estate activity isn’t from a passive activity if you were a real estate professional (defined earlier) and you materially participated in the activity. If the amount is either (a) a loss that isn’t from a passive activity, or (b) a gain, report it in column (g) of Form 4797, Sales of Business Property, line 2, after applying the basis and at-risk limitations on losses. See Limitations on Losses, Deductions, and Credits, earlier. Don’t complete columns (b) through (f) of Form 4797, line 2.
Instead, enter “From Schedule K-1 (Form 1120-S)” across these columns. If the amount is a loss from a passive activity, see Passive Loss Limitations in the Instructions for Form 4797. After applying the limitations on losses and deductions, report the loss following the Instructions for Form 8582 to figure how much of the loss is allowed on Form 4797. If the corporation had net section 1231 gain (loss) from more than one activity, it will attach a statement that will identify the section 1231 gain (loss) from each activity.
Further form details
Caution: Losses reported in box 10 may be limited. See Limitations on Losses, Deductions, and Credits, earlier. Code A. Other portfolio income (loss). The corporation will report portfolio income other than interest, ordinary dividend, royalty, and capital gain (loss) income, and attach a statement to tell you what kind of portfolio income is reported.
If the corporation held a residual interest in a real estate mortgage investment conduit (REMIC), it will report on the statement your share of REMIC taxable income (net loss) that you report in column (d) of Schedule E (Form 1040), line 38. The statement will also report your share of any “excess inclusion” that you report in column (c) of Schedule E (Form 1040), line 38, and your share of section 212 expenses that you report in column (e) of Schedule E (Form 1040), line 38.
Further form details
See Form 8949, Schedule D (Form 1040), and the related instructions for details on how to report the gain and the amount of the allowable exclusion. Codes P through R. Reserved for future use. Code S. Nonportfolio capital gain (loss). Net short-term capital gain (loss) and net long-term capital gain (loss) from Schedule D (Form 1120-S), Capital Gains and Losses and Built-in Gains, that isn’t portfolio income. An example is gain or loss from the disposition of nondepreciable personal property used in a trade or business activity of the corporation.
Report total net short-term gain (loss) on Schedule D (Form 1040), line 5. Report the total net long-term gain (loss) on Schedule D (Form 1040), line 12. Codes T through X. Reserved for future use. Code ZZ. Other income (loss). Amounts with code ZZ are other items of income, gain, or loss not included in boxes 1 through 9 or in box 10 using codes A through S. The corporation should give you a description and the amount of your share for each of these items.
Report loss items that are passive activity amounts to you following the Instructions for Form 8582.
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 |
|---|---|---|
| 4 | Interest income | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 7 | Net short-term capital gain (loss) | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 9 | Net section 1231 gain (loss) | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 12 | Other deductions | Complete the applicable eligibility and limitation workpapers before entering an amount. The label alone does not establish that every reported expense or payment qualifies. |
| 18 | More than one activity for at-risk purposes* | 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. |
Further selected fields
| Line or box | Label in the source form | What to check |
|---|---|---|
| 19 | More than one activity for passive activity purposes* | 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. |
A practical example
A shareholder receives a statement with a business loss and distribution information. The shareholder reconciles the statement with stock and loan records and applies the relevant limitations before completing the individual return.
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 K1 Form 1120-S 2026
- A reported loss is not automatically fully deductible.
- Shareholder wages are not the same as pass-through items.
- Preserve basis and carryover records when changing preparers.
Questions about Schedule K1 Form 1120-S 2026
Does receiving or downloading this form mean I must file it?
An S corporation prepares the shareholder statement; the shareholder determines its own return treatment. 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.
Can I file the draft PDF?
No. The linked target is marked as a draft. Use it to understand the proposed layout and prepare records, but wait for the applicable final filing version. Check the IRS source again before using any year-specific amount, worksheet or filing instruction.
What should I do if the underlying information is wrong?
A reported loss is not automatically fully deductible. 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 shareholder statement, stock and debt basis records, distributions. 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.
- Form 1120-S 2026: Draft PDF & S Corporation Tax Returns Guide
- Schedule E 2026 (Form 1040): Draft PDF & Supplemental Income and Loss Guide
- Schedule K-3 (Form 1120-S) 2026: Draft PDF & Shareholder's Share of Income, Deductions, Credits, etc. – International Guide
- Form 8995-A 2026: Draft PDF & Qualified Business Income Deduction Guide