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IRSCredits & Incentives (8800/8900 Series)

Official form guide

Form 8933-SD: 8933 (Schedule D)

Form 8933‑SD (Schedule D) is the supplemental schedule attached to IRS Form 8933 for reporting capital gains and losses that affect the Qualified Small Business Stock (QSBS) gain exclusion. Use it when you have QSBS transactions that generate capital gain or loss.

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Form Overview

IRS Form 8933-SD - 8933 (Schedule D)

Form 8933‑SD (Schedule D) is the supplemental schedule attached to IRS Form 8933 for reporting capital gains and losses that affect the Qualified Small Business Stock (QSBS) gain exclusion. Use it when you have QSBS transactions that generate capital gain or loss.

It captures dates of acquisition and disposition, basis, sale price, and any adjustments for each QSBS transaction.

Risk Radar

Scan points
  • 1A single mis‑typed dollar amount can wipe out the QSBS exclusion.
  • 2Incorrect acquisition or disposition dates
  • 3Mis‑reporting adjusted basis
  • 4Omitting a QSBS transaction
  • 5Using the wrong line for short‑term vs. long‑term gain

Plain English

If you sold or exchanged qualified small‑business stock, you need to tell the IRS how much you made or lost. This schedule breaks down those capital‑gain numbers so the exclusion on Form 8933 can be calculated correctly.

Submission Date

  • Filing date: 2026-04-08 11:10:44
  • Preparation window: collect IDs, supporting records, and signatures in advance.
  • Final review: verify names, dates, and required fields before submission.

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Glossary Terms

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What this form is for

  • Use when you have QSBS capital gains or losses to report.
  • Do not use if you are only claiming the exclusion without any gain/loss activity.
  • Check Form 8949 if you have other capital‑gain transactions not related to QSBS.

Form selector

Use this form or another form?

No QSBS gain/loss

No Schedule D needed

✓ Verify QSBS status first

Form 8933 only

General capital gains (non‑QSBS)

Different calculation rules

✓ Confirm stock qualifies as QSBS

Form 8949 + Schedule D (Form 1040)

Deadline or filing window

Attach Schedule D to Form 8933 and file with your 2024 federal income tax return by the regular April 15 deadline, or by the extended filing date if you obtain an extension. No separate deadline exists for Schedule D alone.

  • —Sale price | Subtract Adjusted basis | Realized gain/loss | Verify basis accuracy

Checklist

What you need before filling it out

1

Acquisition date

Purchase receipt or stock certificate · Brokerage statements

⚠ Date entered incorrectly✕ Medium
2

Disposition date

Sale confirmation · Brokerage statements

⚠ Date entered incorrectly✕ Medium
3

Adjusted basis

Cost basis worksheet · Brokerage cost‑basis report

⚠ Missing adjustments✕ High
4

Sale price

Trade confirmation · Brokerage statements

⚠ Rounded incorrectly✕ Low
5

Gain/Loss amount

Calculated from basis and price · Spreadsheet or manual calc

⚠ Arithmetic error✕ Medium

Before you submit

  1. 1All QSBS transactions listed
  2. 2Dates match source documents
  3. 3Adjusted basis calculated correctly
  4. 4Gain/loss totals reconcile with Form 8933
  5. 5Schedule D attached to Form 8933
  6. 6Form 8933 signed
  7. 7Return (1040/1040‑NR) signed
  8. 8Electronic submission includes Schedule D attachment
  9. 9If mailing, use correct IRS address
  10. 10Copy of supporting documents retained

How to file this form

  1. 1Log into approved tax software and open Form 8933.
  2. 2Select the option to add Schedule D (Form 8933‑SD).
  3. 3Enter each QSBS transaction line by line.
  4. 4Review calculated totals against your own spreadsheet.
  5. 5Attach Schedule D to the Form 8933 package.
  6. 6File electronically or print and mail the complete return.

Known limitations

  1. 1Form does not calculate adjusted basis; you must compute it yourself.
  2. 2Schedule D only covers QSBS; other capital gains require Form 8949.
  3. 3Electronic software may auto‑populate line numbers; verify placement.
  4. 4IRS instructions may change annually; always check the latest PDF.

Field map

Compact field-by-field guide

6 fields

Entity Info

1 items

Taxpayer Name and TIN

Name and taxpayer ID of the entity claiming the credit.

Requiredtext

Credit Info

1 items

Credit Type

Type of credit or incentive being claimed.

Requiredselect

Calculation

2 items

Qualifying Amount

The base amount used to calculate the credit.

Requiredamount
Credit Amount

Calculated credit amount after applying formulas and limitations.

Requiredamount

Certification

1 items

Supporting Information

Detailed breakdown supporting the credit calculation.

text

Signatures

1 items

Signature

Sign and date the form.

Requiredsignature
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Current form status
IRS

Form 8933‑SD (Schedule D) is currently the 2024 edition, effective for tax year 2024 returns. Verify the edition date on the PDF before use.

What changed or needs a fresh check

  • Edition date – ensure the form shows 2024
  • Fee – no filing fee for Schedule D
  • Mailing address – use the address for your tax‑return type (individual, corporate, etc.)
  • Electronic filing – confirm your software supports Schedule D attachment
  • Signature line – Schedule D itself is unsigned; Form 8933 must be signed

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Quick Facts

Taxpayers who claim the QSBS gain exclusion on Form 8933 and have capital‑gain activity to report.
It captures dates of acquisition and disposition, basis, sale price, and any adjustments for each QSBS transaction.
Attach Schedule D to Form 8933 when you file your annual income tax return, typically by the April 15 deadline (or extended filing date).
File together with Form 8933 as part of your Form 1040‑NR or 1040 filing. Submit electronically through approved tax software or mail the complete packet to the IRS processing center for your return type.
Errors in dates, basis, or gain calculations can reduce or eliminate the QSBS exclusion, leading to unexpected tax liability and possible penalties.
1. Gather purchase and sale documents for each QSBS share. 2. Calculate adjusted basis and realized gain or loss for each transaction. 3. Enter the figures in the appropriate lines of Schedule D, matching the line numbers on Form 8933. 4. Review totals, attach Schedule D to Form 8933, and file with your return.

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After you file

  1. 1Keep copies of all purchase and sale documents for at least seven years.
  2. 2Store the filed Schedule D and Form 8933 with your tax return records.
  3. 3Monitor IRS notices for any adjustments to the QSBS exclusion.
  4. 4If you receive a CP2000 or audit notice, compare the reported numbers to your source documents.
  5. 5Update your QSBS tracking spreadsheet for future years.

Sources

  • SRCIRS Instructions for Form 8933 (2024)outlines Schedule D attachment
  • SRCForm 8933‑SD PDF header shows 2024 edition date
  • SRCIRS Publication 550defines Qualified Small Business Stock
  • SRCIRS Schedule D (Form 1040)provides line‑by‑line layout reference
  • SRCNot found in provided sourceexact line numbers for Schedule D on Form 8933
  • SRCNot found in provided sourceelectronic filing code for Schedule D attachment

Common confusion points

QSBS vs. regular stock

Many taxpayers think any small‑business stock qualifies

→ Verify Section 1202 eligibility

Short‑term vs. long‑term gain lines

Schedule D splits gains by holding period

→ Check holding period before entry

Basis adjustments for stock splits

Adjusted basis may change after splits

→ Recalculate before entering

Duplicate reporting with Form 8949

QSBS gains appear on both forms if not careful

→ Ensure only Schedule D is used for QSBS

Missing Schedule D attachment

Form 8933 can be accepted without it, but exclusion is denied

→ Attach before filing

Workflow map

Related forms and next steps

4 signals

Before

Form 8949 – for non‑QSBS capital gains

Current

8933-SD

After

Form 1040/1040‑NR – final tax return

Often used with

Form 8933 – main QSBS exclusion claim

⚠ If something goes wrong

  • Form 1040X – amendment to correct Schedule D errors

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Source transparency

Copyright & Licensing - US Government Forms

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BrieflyGo links to and explains official public form sources. We are not a government agency, and this page is for general form guidance, not legal advice.

Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
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