This Schedule D Form 1120-S 2026 guide explains the IRS Capital Gains and Losses and Built-In Gains. Schedule D for Form 1120-S reports covered capital transactions and the built-in gains tax matters described by the instructions. Entity-level tax questions and shareholder pass-through reporting must remain distinct. Prior asset and election history can matter to the current calculation.
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 D Form 1120-S 2026 does and who prepares it
An S corporation reports the capital gain, loss and built-in gain matters covered by the applicable schedule.
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 D) |
|---|---|
| IRS title | Capital Gains and Losses and Built-In Gains |
| Guide period | 2026 |
| Target version | 2026 |
| Availability | Draft — not for filing |
| Last checked | October 31, 2026 |
Get the Schedule D 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 D 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 D Form 1120-S 2026
- Asset basis and sale records.
- S election history.
- Built-in gain workpapers.
- Capital transaction details.
- Shareholder reporting schedules.
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 D 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.
Reminders Codes to use for reporting digital asset transactions. Use codes G, H, I, J, K, and L to report digital asset transactions on lines 1b, 2, 3, 8b, 9, and 10. See Form 1099-DA, Digital Asset Proceeds From Broker Transactions, and Form 8949, Sales and Other Dispositions of Capital Assets, and their instructions for additional information regarding digital assets.
Use Schedule D to report the following. • The overall capital gains and losses from transactions reported on Form 8949, Sales and Other Dispositions of Capital Assets. • Certain transactions the corporation doesn’t have to report on Form 8949. • Capital gains from Form 6252, Installment Sale Income. • Capital gains and losses from Form 8824, Like-Kind Exchanges. • Gains on distributions to shareholders of appreciated capital assets. • Capital gain distributions. • Tax on built-in gains. See Part III. Built-in Gains Tax, later.
Additional reporting conditions
Use Form 4797, Sales of Business Property, to report the following. • The sale, exchange, or distribution of real property used in a trade or business. • The sale, exchange, or distribution of depreciable and amortizable property. • The sale or other disposition of securities or commodities held in connection with a trading business, if the corporation made a mark-to-market election. • The involuntary conversion (from other than casualty or theft) of property used in the corporation’s trade or business and capital assets held in connection with a trade or business or a transaction entered into for profit. • The disposition of noncapital assets other than inventory or property held primarily for sale to customers in the ordinary course of the corporation’s trade or business. • Election to defer a qualified section 1231 gain invested in a qualified opportunity fund (QOF).
Use Form 4684, Casualties and Thefts, to report involuntary conversions of property due to casualty or theft. Use Form 6781, Gains and Losses From Section 1256 Contracts and Straddles, to report gains and losses from section 1256 contracts and straddles. Additional information. For more information, see the Sales and Other Dispositions of Assets, and Pub. 550, Investment Income and Expenses.
Calculations and supporting information
Report short-term gains or losses in Part I. Report long-term gains or losses in Part II. The holding period for short-term capital gains and losses is generally 1 year or less. The holding period for long-term capital gains and losses is generally more than 1 year. However, an exception applies for certain sales of applicable partnership interests. See Transactions with respect to applicable partnership interests, later.
Specific Instructions Complete all necessary pages of Form 8949 before completing line 1b, 2, 3, 8b, 9, or 10 of Schedule D.
Cents can be rounded to whole dollars on Schedule D. If cents are rounded to whole dollars, all amounts must be rounded. To round, drop amounts under 50 cents and increase amounts from 50 to 99 cents to the next dollar. For example, $1.49 becomes $1 and $2.50 becomes $3. If two or more amounts have to be added to figure the amount to enter on a line, include cents when adding the amounts and round off only the total.
Exceptions and related reporting
Section 1374 provides for a tax on built-in gains. The built-in gains tax may apply to the following S corporations. 1. An S corporation that was a C corporation before it elected to be an S corporation. 2. An S corporation that acquired an asset with a basis determined (in whole or in part) by reference to its basis (or the basis of any other property) in the hands of a C corporation (a transferred-basis acquisition). See section 1374(d)(8).
An S corporation may owe the tax if it has net recognized built-in gain during the applicable recognition period. For computation details, see Regulations section 1.1374-1(a).
The applicable recognition period is the 5-year period beginning: • For an asset held when the S corporation was a C corporation, on the first day of the first tax year for which the corporation is an S corporation; or • For a transferred-basis acquisition, on the date the asset was acquired by the S corporation. A corporation described in both (1) and (2) above must figure the built-in gains tax separately for the group of assets it held at the time its S election became effective and for each group of transferred-basis acquisitions.
For details, see Regulations section 1.1374-8. Certain transactions involving the disposal of timber, coal, or domestic iron ore under section 631 aren’t subject to the built-in gains tax. See Rev. Rul. 2001-50, which is on page 343 of Internal Revenue Bulletin 2001-43 at IRS.gov/pub/irs-irbs/irb01-43.pdf.
Further form details
Generally, enter the amount that would be the taxable income of the corporation for the tax year if only recognized built-in gains (including any carryover of gain under section 1374(d)(2)(B)) and recognized built-in losses were taken into account. Generally, recognized built-in gain includes the following items.
Figure taxable income by completing lines 1 through 28 of Form 1120. Follow the Instructions for Form 1120. Enter the amount from line 28 of Form 1120 on line 17 of Schedule D. Attach to Schedule D the Form 1120 computation or other worksheet used to figure taxable income. For corporations figuring the built-in gains tax for separate groups of assets, taxable income must be apportioned to each group of assets in proportion to the net recognized built-in gain for each group of assets. For details, see Regulations section 1.1374-8.
Note: Taxable income is figured as provided in section 1375(b)(1)(B) and is generally figured in the same manner as taxable income for line 9 of the Excess Net Passive Income Tax Worksheet for Line 23a in the Instructions for Form 1120-S.
Further form details
The built-in gains tax is treated as a loss sustained by the corporation during the same tax year. The character of the deemed loss is determined by allocating the loss proportionately among the net recognized built-in gains giving rise to the tax and attributing the character of each net recognized built-in gain to the allocable portion of the loss.
Deduct the tax attributable to the following. • Short-term capital gain as short-term capital loss on Schedule D, line 6. • Long-term capital gain as long-term capital loss on Schedule D, line 14. • Ordinary income as a deduction for taxes on Form 1120-S, line 12.
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 |
|---|---|---|
| 1b | Totals for all transactions reported on Form(s) 8949 | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
| 2 | Totals for all transactions reported on Form(s) 8949 | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
| 3 | Totals for all transactions reported on Form(s) 8949 | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
| 4 | Short-term capital gain from installment sales from Form 6252, line 26 or 37 | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 5 | Short-term capital gain or (loss) from like-kind exchanges from Form 8824 | 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 |
|---|---|---|
| 6 | Tax on short-term capital gain included on line 23 below | 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 or (loss). Combine lines 1a through 6 in column (h). Enter here and on | Identify the income or transaction category before entering a total. Preserve the distinction between gross amounts, adjustments and the resulting taxable or reportable figure. |
| 8b | Totals for all transactions reported on Form(s) 8949 | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
| 9 | Totals for all transactions reported on Form(s) 8949 | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
| 10 | Totals for all transactions reported on Form(s) 8949 | Follow the stated arithmetic and line references in sequence. Complete the referenced inputs first and retain the worksheet supporting the result. |
A practical example
An S corporation disposes of an asset and reviews the asset and election history. Its preparer determines the applicable capital and built-in gain reporting and coordinates the entity and shareholder information.
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 D Form 1120-S 2026
- Do not assume every S corporation asset sale creates the same entity-level tax.
- Preserve the character of pass-through items.
- Check built-in gain applicability from the actual facts and history.
Questions about Schedule D Form 1120-S 2026
Does receiving or downloading this form mean I must file it?
An S corporation reports the capital gain, loss and built-in gain matters covered by the applicable schedule. 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?
Do not assume every S corporation asset sale creates the same entity-level tax. 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 asset basis and sale records, S election history, built-in gain 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.