# Isonomy Inc

Columbia, South Carolina. EIN 87-4768307.
Exempt, a return not yet on file.

Source: IRS public records as of October 13, 2026, as shown by the Alleviate Index. https://index.alleviate.org/org/isonomy-inc-874768307

## At a glance

Figures come from the organization’s latest return, for the fiscal year ending December 2023, as recorded by the IRS.

- Revenue: $198,511 (FY2023)
- Assets: $2,500 (Year end)
- Required return: Form 990-EZ (The short form is allowed under $200K of receipts and $500K of assets)
- Fiscal year: January to December (Ends in December)
- Focus: Other civil rights (NTEE R99, civil rights)
- Charity type: Publicly supported (509(a)(2))

## What is due, and when

Computed from the fiscal year end and the return type. Federal dates are fixed by law. The state line is the general charitable solicitation rule of South Carolina, read from the regulator’s own guidance; exemptions vary, and the regulator’s page is the authority.

- May 15, 2025: Form 990-EZ for FY2024. Not yet on the IRS file. The October 2026 IRS file shows FY2023 as the latest return.
- Nov 17, 2025: Extended deadline for FY2024. Not yet on the IRS file. Six month automatic extension (Form 8868). November 15 falls on a Saturday, so the deadline moves to Monday. The October 2026 IRS file does not show the return. A return can take weeks to reach the file.
- May 15, 2026: Form 990-EZ for FY2025. Not yet on the IRS file. The October 2026 IRS file shows FY2023 as the latest return. Filed on extension, it is due November 16, 2026.
- Nov 16, 2026: Extended deadline for FY2025. Six month automatic extension (Form 8868). November 15 falls on a Sunday, so the deadline moves to Monday.
- May 17, 2027: Form 990-EZ for FY2026. Fifteenth day of the fifth month after year end. May 15 falls on a Saturday, so the deadline moves to Monday.
- Annual: South Carolina charitable solicitation registration. Charities that solicit in South Carolina register with the state and renew each year, unless exempt. It is due by the 15th day of the fifth month after the fiscal year ends. An extension is available for the annual financial report only. For a fiscal year ending in December, that is May 15. Regulator: Division of Public Charities, South Carolina Secretary of State (https://sos.sc.gov/online-filings/charities-pfrs-and-raffles/charities).
- Watch: Automatic revocation rule. One return not yet on the file. Exempt status is revoked after three consecutive years without a return. The latest return on file is FY2023.

## When each return reached the IRS

From IRS records of electronically filed returns. The IRS record date is the date in the IRS’s own record of each return. It is not a legal filing date, and extensions are not public.

| Fiscal year | Form | IRS record date | Due date | Note |
| --- | --- | --- | --- | --- |
| FY2022 | Form 990-EZ | May 7, 2024 | May 15, 2023 |  |

Returns for fiscal years before 2021, and returns the IRS record cannot date, are not listed.

## What the IRS lists say

Three IRS lists, read each month. This is a display of what they show, not a determination of status.

- Exempt status: Listed as exempt. The IRS list of exempt organizations. As of October 13, 2026.
- Deductible donations: Listed. The IRS list of organizations eligible to receive tax deductible contributions. Listed with code PC (public charity). As of October 13, 2026.
- Automatic revocation: Not on the list. The IRS list of organizations whose exemption was revoked for not filing three years in a row. As of October 13, 2026.

## No size comparison

The latest figures on the IRS file are for FY2023. Figures that old are shown beside the group, not ranked in it.

For reference: 16 public charities in the group, median revenue $167K.

## What public data cannot tell you

A 990 shows money in and money out. It cannot show whether programs, outcomes, funding and compliance live in one place, or how long a funder report takes to produce. The five pillars below are scored only by the organization itself.

- Mission & Strategic Clarity: Unscored
- Stakeholders & Positioning: Unscored
- Programs & Program Design: Unscored
- Evidence, Data & Storytelling: Unscored
- Systems, Governance & Readiness: Unscored

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