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Form 1120-SSD: 1120-S (Schedule D)
IRS Form 1120-S (Schedule D) is used by S corporations to report capital gains and losses, including transactions from Form 8949, installment sales, like-kind exchanges, and built-in gains tax. Taxpayers who made a deferral election for gains invested in a QOF meeting the 7-year holding period may be eligible for a basis adjustment.
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IRS Form 1120-SSD - 1120-S (Schedule D)
IRS Form 1120-S (Schedule D) is used by S corporations to report capital gains and losses, including transactions from Form 8949, installment sales, like-kind exchanges, and built-in gains tax. Taxpayers who made a deferral election for gains invested in a QOF meeting the 7-year holding period may be eligible for a basis adjustment.
Risk Radar
Scan points- 1Failing to report built-in gains tax in Part III when applicable.
- 2Not using Form 8949 before completing lines 1b, 2, 3, 8b, 9, or 10 of Schedule D.
- 3Reporting short-term gains in Part II instead of Part I.
- 4Omitting built-in gains tax calculation in Part III.
- 5Failing to report gain on distributions of appreciated capital assets.
Plain English
This form helps S corporations report their profits and losses from selling investments like stocks or property. It also calculates a special tax on built-in gains. You use it together with other forms like Form 8949 and Form 4797.
Submission Date
- Filing date: 2025-12-31 12:05:41
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use this form when an S corporation needs to report capital gains and losses, including transactions from Form 8949, installment sales, like-kind exchanges, and built-in gains tax.
- Do not use it when reporting sales of business property (real property used in a trade or business, depreciable property) – use Form 4797 instead.
- Check Form 8949 instead when reporting the sale or exchange of a capital asset not reported on another form or schedule, and to report deferral or exclusion of capital gains.
Form selector
Use this form or another form?
Reporting capital gains and losses from securities sales
Each transaction must be reported on Form 8949 unless an exception applies
✓ Check the Instructions for Form 8949 for exceptions to reporting each transaction on a separate row
Reporting installment sale income
Capital gains from installment sales are reported on Schedule D via Form 6252
✓ Verify the installment sale qualifies for installment method reporting
Reporting like-kind exchanges
Capital gains and losses from like-kind exchanges are reported on Schedule D via Form 8824
✓ Confirm the property qualifies as like-kind under section 1031
Reporting deferral election for qualified opportunity fund (QOF) investment
Must attach Form 8997 annually until the QOF investment is disposed of
✓ Ensure the QOF meets the 7-year holding period for basis adjustment eligibility
Reporting digital asset transactions
New codes G, H, I, J, K, L were added to Schedule D lines for digital asset transactions
✓ Refer to Form 8949 instructions for additional information on digital assets
Deadline or filing window
Not stated in the official source
Checklist
What you need before filling it out
Line 1b (short-term capital gains)
Digital asset transaction codes · Schedule D instructions, page 1
Part III (Built-in Gains Tax)
Section 1374 calculations and loss allocation · Instructions for Schedule D, page 7
Line 23
Built-in gains tax loss allocation · Instructions for Schedule D, page 7
Form 8997 attachment
Annual statement of QOF investments · Instructions for Schedule D, page 4
Line 6 (short-term capital loss from built-in gains tax)
Deduct tax attributable to short-term capital gain · Instructions for Schedule D, page 7
Digital asset transactions (lines 1b, 2, 3, 8b, 9, 10)
Form 1099-DA and Form 8949 · Instructions for Schedule D, page 1
QOF deferral election
Form 8997 and basis adjustment eligibility · Instructions for Schedule D, pages 1 and 4
Before you submit
- 1Complete all necessary pages of Form 8949 before Schedule D lines 1b, 2, 3, 8b, 9, and 10.
- 2Verify that transactions reported on line 1a or 8a are not required to be on Form 8949.
- 3Check that codes for digital asset transactions are G, H, I, J, K, or L as applicable.
- 4If installment sale, ensure Form 6252 is attached and gain entered on line 4 or 11.
- 5If electing out of installment method, confirm election was made on original return or amended return within 6 months of original due date.
- 6Confirm that any exclusion for DC Zone or qualified community assets is properly reported with 'X' in column (f) and negative amount in column (g) of Form 8949.
- 7Ensure that holding period for long-term gains is more than 1 year (except applicable partnership interests).
- 8Attach Schedule D to Form 1120-S.
- 9Sign and date the return.
- 10Keep a copy of all forms and schedules.
How to file this form
- 1Complete Form 8949 for all required transactions (sale or exchange of capital assets not reported on another form).
- 2Transfer totals from Form 8949 to Schedule D lines 1b, 2, 3, 8b, 9, and 10.
- 3Report transactions not on Form 8949 directly on lines 1a and 8a.
- 4Report installment sale gains on lines 4 and 11 using Form 6252.
- 5Calculate net gain or loss and enter on Form 1120-S Schedule K.
- 6Attach Schedule D to Form 1120-S.
- 7File Form 1120-S by the due date (including extensions).
Known limitations
- 1Do not use Schedule D for sales of business property (real property used in trade or business, depreciable property) – use Form 4797.
- 2Installment method may not be used for stock or securities traded on an established securities market.
- 3Certain sales of applicable partnership interests have different holding period rules for long-term gains.
- 4Deferral of gain invested in a qualified opportunity fund (QOF) may require additional reporting not fully covered on Schedule D.
- 5Exclusion of gain from DC Zone business property is reported on Form 4797, not Schedule D.
Field map
Compact field-by-field guide
Entity Info
2 items
Full legal name of the corporation and its Employer Identification Number.
Current mailing address and date of incorporation.
Income
3 items
Total revenue from business operations before deducting costs.
Direct costs attributable to producing goods sold by the corporation.
Gross receipts minus cost of goods sold and returns/allowances.
Deductions
1 items
Sum of all business expenses including compensation, rent, interest, taxes, and depreciation.
Tax
2 items
Total income minus total deductions.
Tax calculated on taxable income using the applicable corporate tax rate, minus any credits.
Signatures
1 items
An authorized corporate officer must sign and date the return.
Almost done reviewing the fields?
Fillable formOpen in Editor->The 2025 edition of Schedule D (Form 1120-S) includes new codes G, H, I, J, K, and L for reporting digital asset transactions. For the latest developments after publication, refer to IRS.gov/Form1120S.
What changed or needs a fresh check
- Edition date — confirm the revision date reads 2025.
- Digital asset codes — check if any digital asset transactions require new codes G, H, I, J, K, or L.
- Form 8949 completion — complete all necessary pages of Form 8949 before completing lines 1b, 2, 3, 8b, 9, or 10 of Schedule D.
- Installment sale election — if electing out of installment method, file amended return within 6 months of original due date with 'Filed pursuant to section 301.9100-2' at top.
- Fee — Not stated in the official source — verify on the agency site.
- Mailing address — Not stated in the official source — verify on the agency site.
Quick Facts
Downloads
After you file
- 1Retain a copy of Schedule D and all supporting forms (Form 8949, Form 6252, etc.) for your records.
- 2If you need to correct an error, file an amended Form 1120-S.
- 3If you elected out of installment method on an amended return, write 'Filed pursuant to section 301.9100-2' at the top of the amended return.
- 4Monitor IRS.gov/Form1120S for future developments related to Schedule D.
- 5If you have a digital asset transaction, ensure you have received Form 1099-DA and retained it.
- 6Keep documentation for any exclusions claimed (e.g., qualified community asset) in case of IRS inquiry.
Sources
- SRCInstructions p.1new codes G, H, I, J, K, L for digital asset transactions.
- SRCInstructions p.1use Form 8949 to report sale or exchange of capital asset not reported on another form.
- SRCInstructions p.2holding period for long-term capital gains is generally more than 1 year.
- SRCInstructions p.2installment method may not be used for stock or securities traded on an established securities market.
- SRCInstructions p.2to elect out of installment method, file amended return within 6 months of original due date with 'Filed pursuant to section 301.9100-2'.
- SRCInstructions p.6complete all necessary pages of Form 8949 before completing lines 1b, 2, 3, 8b, 9, and 10.
- SRCInstructions p.6figure gain or loss by subtracting cost from proceeds and combining with adjustments.
- SRCInstructions p.2exclusion of gain from qualified community assets reported on Form 8949 Part II with 'X' in column (f) and negative amount in column (g).
Common confusion points
How do I report digital asset transactions on Schedule D?
New codes G, H, I, J, K, L were added for digital asset transactions
→ Check Form 1099-DA and Form 8949 instructions for additional information
What is the built-in gains tax and how do I report it?
Complex calculations and loss allocation required; the tax is treated as a loss sustained by the corporation
→ See Part III instructions and line 23 of Schedule D
Do I need to attach Form 8997 every year?
Yes, until the QOF investment is disposed of
→ Attach Form 8997 annually to your tax return as stated in the instructions
Can I defer gain from a QOF investment?
Yes, but basis adjustment eligibility requires meeting the 7-year holding period
→ Check Form 8997 and its instructions for deferral and basis adjustment rules
What is the difference between a trader and an investor for reporting?
Traders may use mark-to-market election and report on Form 4797; investors report on Form 8949
→ See Instructions for Form 4797 and the trader vs. investor guidance in Schedule D instructions
How do I report collectibles gain (28% rate gain)?
Collectibles gain is subject to a 28% rate
→ Report on Schedule D with the appropriate rate; see Pub. 550 for details
What about AMT credit carryforwards from C corporation years?
They are subject to limitations and do not apply to S corporations
→ Refer to sections 1371(b)(1) and 1374(b)(3)(B) and Regulations section 1.1374-6(b)
How do I handle installment sale income?
Report on Form 6252 first, then transfer capital gain to Schedule D
→ Ensure the installment method is elected and properly reported on Form 6252
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Form 1120-S amended return – to correct errors, with special notation for installment election.
Questions about IRS Form 1120-SSD
What is IRS Form 1120-SSD used for?
This form helps S corporations report their profits and losses from selling investments like stocks or property. It also calculates a special tax on built-in gains. You use it together with other forms like Form 8949 and Form 4797.
Who must file IRS Form 1120-SSD?
S corporations that have capital gains or losses, built-in gains, or certain other transactions described in the instructions must file Schedule D (Form 1120-S).
What information does IRS Form 1120-SSD require?
The form collects information on short-term gains and losses in Part I, long-term gains and losses in Part II, and built-in gains tax in Part III. It also includes lines for transactions from Form 8949, Form 6252, and Form 8824.
How do I complete IRS Form 1120-SSD?
First, complete Form 8949 for sales or exchanges of capital assets not reported elsewhere. Then, report short-term gains or losses in Part I and long-term gains or losses in Part II. Report built-in gains tax in Part III. Attach Schedule D to Form 1120-S and sign the return.
How do I report digital asset transactions on Schedule D?
New codes G, H, I, J, K, L were added for digital asset transactions Check Form 1099-DA and Form 8949 instructions for additional information
What is the built-in gains tax and how do I report it?
Complex calculations and loss allocation required; the tax is treated as a loss sustained by the corporation See Part III instructions and line 23 of Schedule D
Do I need to attach Form 8997 every year?
Yes, until the QOF investment is disposed of Attach Form 8997 annually to your tax return as stated in the instructions
Can I defer gain from a QOF investment?
Yes, but basis adjustment eligibility requires meeting the 7-year holding period Check Form 8997 and its instructions for deferral and basis adjustment rules
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