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IRSTax-Exempt Organizations (990 Series)

Official form guide

Form 990-SO: 990 (Schedule O)

IRS Form 990 (Schedule O) is supplemental information for organizations filing Form 990 or 990-EZ. This form allows narrative explanations of operations and responses to specific questions, such as when an expense exceeds 10% of total functional expenses.

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Form Overview

IRS Form 990-SO - 990 (Schedule O)

IRS Form 990 (Schedule O) is supplemental information for organizations filing Form 990 or 990-EZ. This form allows narrative explanations of operations and responses to specific questions, such as when an expense exceeds 10% of total functional expenses.

The form collects narrative details related to various parts of the main return; for example, it explains responses to Part III, line 2a on Form 990 regarding program service accomplishments. It also provides explanations for items like Part IX, line 11g (other fees for services).

Risk Radar

Scan points
  • 1Do not use Schedule O (Form 990) to supplement answers in other schedules; each schedule has its own supplemental part.
  • 2Failing to identify clearly which part/line of Form 990 or 990-EZ each response relates to.
  • 3Using Schedule O (Form 990) when a specific schedule already has its own supplemental section.
  • 4Not providing the required narrative explanation for Part VI, lines 11b and 19 on Form 990.
  • 5Omitting explanations for expenses exceeding 10% of total functional expenses (Part IX, line 11g or 24e).

Plain English

This form provides the IRS with detailed stories and explanations about how your organization runs, going beyond simple numbers. It lets you elaborate on answers given in Form 990 or 990-EZ to clarify complex financial decisions or activities. You must use this schedule to supplement responses to specific questions within those main forms.

Submission Date

  • Filing date: 2025-01-14 22:12:05
  • 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

Hover a term to preview the meaning.

What this form is for

  • Use this form when an organization needs to provide narrative information or explanations regarding specific questions on Form 990 or Form 990-EZ.
  • Do not use Schedule O (Form 990) to supplement responses to questions in other schedules of the Form 990 or Form 990-EZ, as each schedule has its own supplemental part.
  • Check Form 990 or Form 990-EZ when you are required to file Schedule O (Form 990) because you are filing that main return.

Form selector

Use this form or another form?

Amended Return

Use this form to list each part or schedule item being amended on the main form.

Check Box B on Form 990 or 990-EZ

Form 990/990-EZ

Group Return (Yes but not No)

If answering 'Yes' to Line H(a) but 'No' to Line H(b), use a separate attachment, not Schedule O.

See instructions for Form 990, Item I.

N/A (Use attachment)

Late Filing Notice

Attach this statement if the main return is not filed by the due date (including extensions).

Do not use Schedule O to provide the late-filing statement itself.

Separate Statement

Deadline or filing window

The instructions do not provide a specific filing deadline date for Form 990 or 990-EZ. If the return is filed after the due date, an organization must attach a separate statement detailing why it was late. This schedule itself serves as the supplement and does not replace the required late-filing statement.

Checklist

What you need before filling it out

1

General Purpose

Narrative information for specific questions on Form 990/990-EZ · Schedule O (Form 990)

Using it to answer a question not listed in the instructionsLow
2

Required Filing Trigger

Must file if filing Form 990 or certain Form 990-EZ organizations. · Instructions p.1

Failing to use it when required by lawHigh
3

Amended Return Listing

List each part/schedule line item being amended on the main form. · Schedule O (Form 990)

Forgetting to list all amended parts/linesMedium
4

Compensation Detail

Explain compensation if paid by a related organization only for a partial period. · Instructions p.2, Item 7a

Not stating the specific period of relationshipMedium
5

Functional Expense Explanation

Provide details on expenses exceeding 10% of total functional expenses (Part IX, Line 25). · Instructions p.2, Item 7e

Only listing the amount without describing the type/amountLow
6

Grant List

List grants and similar amounts paid in response to Form 990 line 10. · Schedule O (Form 990)

Omitting any grant that fits the descriptionMedium

Before you submit

  1. 1Confirm you have completed the Name of the organization and EIN on Form p.1.
  2. 2Verify that each response clearly identifies the specific part and line(s) of Form 990 or 990-EZ it relates to.
  3. 3Ensure responses follow the sequence of Part and Line from Form 990 or 990-EZ.
  4. 4If amending, confirm you have listed every single part or schedule/line item being amended on Schedule O (Form 990).
  5. 5If reporting compensation by a related organization, verify that you state the period during which it was paid.
  6. 6Check if any expense included in Part IX, line 11g exceeds 10% of total functional expenses (Part IX, line 25), and provide details.
  7. 7Confirm the revision date at the top reads December 2024.

How to file this form

  1. 1Complete all required narrative information on Schedule O (Form 990) before attaching it to your Form 990 or 990-EZ.
  2. 2If amending, list every relevant part and schedule line item from the main form onto Schedule O (Form 990).
  3. 3Provide specific explanations for questions like Part III, Line 2a ('Yes' response) or Part VII compensation details as required by instructions.
  4. 4Attach a separate statement if you are filing late; do not use Schedule O to provide this statement itself.
  5. 5Sign and date the completed Schedule O (Form 990) before mailing it with your main return.

Known limitations

  1. 1Schedule O (Form 990) should be used to supplement responses to specific questions on Form 990 or Form 990-EZ, not as a general attachment.
  2. 2Do not use Schedule O (Form 990) to supplement responses to questions in other schedules of the Form 990 or 990-EZ; each schedule has its own part for supplemental information.
  3. 3If an organization is not required to file Form 990 or 990-EZ but chooses to file, it must provide all requested information, including Schedule O (Form 990).
  4. 4When amending a return, use Schedule O (Form 990) to list each part or schedule and line item of the Form 990 or 990-EZ that was amended if the organization checked the Amended return box on Form 990/990-EZ, Heading, item B.
  5. 5If an organization answers 'Yes' to Form 990, line H(a) but 'No' to line H(b), use a separate attachment (not Schedule O (Form 990)) to list affiliated organizations.

Field map

Compact field-by-field guide

7 fields

Organization Info

2 items

Organization Name and EIN

Legal name of the tax-exempt organization and its EIN.

Requiredtext
Address and Website

Current mailing address and website URL if applicable.

Requiredtext

Revenue

1 items

Total Revenue

Sum of all revenue including contributions, program service revenue, investment income, and other revenue.

Requiredamount

Expenses

1 items

Total Expenses

Sum of all expenses including program services, management, and fundraising.

Requiredamount

Assets

1 items

Net Assets

Total assets minus total liabilities at end of the reporting period.

Requiredamount

Compliance

1 items

Tax-Exempt Status

Certification of continued compliance with tax-exempt requirements.

Requiredcheckbox

Signatures

1 items

Officer Signature

An authorized officer of the organization must sign.

Requiredsignature
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Current form status
IRS

The current edition is Revision December 2024. The instructions are converted from an annual revision to continuous use, meaning these instructions apply for tax year 2024 and subsequent years until a superseding revision is issued. For the latest information, refer to IRS.gov/Form990.

What changed or needs a fresh check

  • Edition date — confirm Revision December 2024.
  • Catalog Number — confirm it reads 94739U.
  • Form Title — confirm it is 'Schedule O (Form 990)'.
  • Filer Identification — ensure Name of the organization and EIN are completed on Form p.1.

Quick Facts

All organizations that file Form 990 and certain organizations that file Form 990-EZ must file Schedule O (Form 990).
The form collects narrative details related to various parts of the main return; for example, it explains responses to Part III, line 2a on Form 990 regarding program service accomplishments. It also provides explanations for items like Part IX, line 11g (other fees for services).
The instructions do not state a specific filing deadline date; however, if the return is not filed by the due date (including any extension granted), a separate statement must be attached explaining the delay.
The source does not specify a single mailing address or service center for routing. The organization should follow the instructions of Form 990 or 990-EZ to determine where to send it.
If the return is not filed by the due date, attaching a separate statement giving the reasons for late filing on time is required; this schedule cannot be used as that statement itself.
First, complete the required information on the appropriate line of Form 990 or 990-EZ. Then, use Schedule O (Form 990) to provide narrative responses, clearly identifying which part and line(s) each response relates to. The sequence must follow that of Form 990 or 990-EZ.

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After you file

  1. 1Keep a copy of the completed Schedule O (Form 990) attached to your filed Form 990 or Form 990-EZ.
  2. 2Provide a separate statement explaining reasons for late filing if the return is not submitted by the due date (or granted extension).
  3. 3If you file an amended return, use Schedule O (Form 990) to list which parts/lines were changed.
  4. 4Do not include any social security number(s) on Schedule O (Form 990) because this schedule is available for public inspection.

Sources

  • SRCInstructions p.1 — Organizations must use Schedule O (Form 990) to provide narrative information for responses to specific questions on Form 990 or 990-EZ.
  • SRCInstructions p.1 — All organizations that file Form 990 and certain organizations that file Form 990-EZ must file Schedule O (Form 990).
  • SRCInstructions p.1 — At a minimum, Schedule O (Form 990) must be used to answer Form 990, Part VI, lines 11b and 19.
  • SRCInstructions p.2 — If the amount on Part IX, line 24e exceeds 10% of the amount on Part IX, line 25 (total functional expenses), an explanation must be provided using Schedule O (Form 990).
  • SRCForms p.1 — The form is titled 'Schedule O (Form 990)' and has a Catalog Number of 51056K.
  • SRCInstructions p.1 — If the organization checks the Amended return box on Form 990, Heading, item B, use Schedule O (Form 990) to list each part or schedule that was amended.
  • SRCInstructions p.2 — The narrative provided on Schedule O (Form 990) should refer and relate to a particular line and response on the form.
  • SRCInstructions p.1 — Do not include any social security number(s) on Schedule O (Form 990) because this schedule will be made available for public inspection.

Common confusion points

Should I use Schedule O (Form 990) to explain everything?

Schedule O (Form 990) should be used for narrative information answering specific questions on Form 990 or 990-EZ, not as a general catch-all attachment.

What if my organization isn't required to file Form 990/990-EZ?

If I choose to file voluntarily, do I still need Schedule O (Form 990)?

When should I use Schedule O (Form 990) for amendments?

Do all narrative explanations go on Schedule O (Form 990)?

What if the expense is under 10% of total functional expenses?

If an organization answers 'Yes' to Form 990, line H(a), but 'No' to line H(b), where does the group return information go?

Workflow map

Related forms and next steps

5 signals

Before

Schedule O (Form 990) instructions were converted from an annual revision to continuous use, applying to tax year 2024 and subsequent years.

Current

990-SO

After

The latest information about developments related to Schedule O (Form 990) can be found at IRS.gov/Form990.

Often used with

Form 990 (Schedule O) provides supplemental narrative for questions on Form 990 or 990-EZ.Form 990-EZ (Schedule O) provides supplemental narrative for questions on Form 990 or 990-EZ.

⚠ If something goes wrong

  • If the return is not filed by the due date, attach a separate statement explaining the delay, which should reference Schedule O (Form 990).

Questions about IRS Form 990-SO

What is IRS Form 990-SO used for?

This form provides the IRS with detailed stories and explanations about how your organization runs, going beyond simple numbers. It lets you elaborate on answers given in Form 990 or 990-EZ to clarify complex financial decisions or activities. You must use this schedule to supplement responses to specific questions within those main forms.

Who must file IRS Form 990-SO?

All organizations that file Form 990 and certain organizations that file Form 990-EZ must file Schedule O (Form 990).

What information does IRS Form 990-SO require?

The form collects narrative details related to various parts of the main return; for example, it explains responses to Part III, line 2a on Form 990 regarding program service accomplishments. It also provides explanations for items like Part IX, line 11g (other fees for services).

When is IRS Form 990-SO due?

The instructions do not state a specific filing deadline date; however, if the return is not filed by the due date (including any extension granted), a separate statement must be attached explaining the delay.

Where do I file IRS Form 990-SO?

The source does not specify a single mailing address or service center for routing. The organization should follow the instructions of Form 990 or 990-EZ to determine where to send it.

How do I complete IRS Form 990-SO?

First, complete the required information on the appropriate line of Form 990 or 990-EZ. Then, use Schedule O (Form 990) to provide narrative responses, clearly identifying which part and line(s) each response relates to. The sequence must follow that of Form 990 or 990-EZ.

What happens if IRS Form 990-SO is filed incorrectly?

If the return is not filed by the due date, attaching a separate statement giving the reasons for late filing on time is required; this schedule cannot be used as that statement itself.

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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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