Nonprofit · EIN 36-3314834
SIGMA THETA TAU INC
Also known as 181 ETA OMICRON CHAPTER
Tax-exempt · CORPUS CHRISTI, TX 78414
Address and contacts
- Address (IRS master file)
- CATHERINE ZELLER, CORPUS CHRISTI, TX 78414-0000
- In care of
- % KATELIJNE ACKER
- Mailing address (990-N for 2025)
- 6300 Ocean Drive, Corpus Christi TX 78412
- Principal officer (990-N for 2025)
- Catherine Zeller, 301 Catalina Pl, Corpus Christi TX 78411
What it must file and when
IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | 990-N on file |
| 2024 | June 30, 2025 | November 17, 2025 | 990-N on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990-N on file |
IRS record
- EIN
- 36-3314834
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Exempt since
- 1954
- Accounting year ends
- June
- Files
- Form 990-N (e-Postcard)
- Group exemption
- 1288: SIGMA THETA TAU INTERNATIONAL INC
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-N for 2025 Officer: Catherine Zeller | June 30, 2026 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2024 Officer: Catherine Zeller | June 30, 2025 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2023 Officer: teresa ercan | June 30, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2022 Officer: teresa ercan | June 30, 2023 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2020 Officer: Teresa Ercan | June 30, 2021 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2019 Officer: tERESA eRCAN | June 30, 2020 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2018 Officer: teresa ercan | June 30, 2019 | ≤ $50,000 receipts | – | – | e-Postcard |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 36-3314834).
Questions about SIGMA THETA TAU INC
- What is the EIN of SIGMA THETA TAU INC?
- The employer identification number (EIN) of SIGMA THETA TAU INC is 36-3314834.
- Is SIGMA THETA TAU INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1954.
- Which annual return does SIGMA THETA TAU INC file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of SIGMA THETA TAU INC due?
- The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did SIGMA THETA TAU INC last file with the IRS?
- The latest return in the IRS public files is the 990-N for 2025 for the year ended June 30, 2026.
- Who is the principal officer of SIGMA THETA TAU INC?
- The 990-N for 2025 names Catherine Zeller.
Other nonprofits in CORPUS CHRISTI
- NUECES COUNTY MENTAL HEALTH & MENTAL RETARDATION COMMUNITY CENTE EIN 74-1623759 · last filed 990 for 2025
- COMPASSIONATE CARE MEDICAL CLINIC EIN 93-1558508 · last filed 990 for 2025
- LOUISE ALLEN FOUNDATION EIN 82-1338031 · last filed 990-PF for 2025
- ANNAPOLIS CHRISTIAN ACADEMY EIN 74-2754850 · last filed 990 for 2025
- CIRCLES OF CARE EIN 74-2927898 · last filed 990 for 2025
- WINDOW LEDGE FOUNDATION EIN 74-2959617 · last filed 990 for 2024
- CORPUS CHRISTI TOURISM PUBLIC IMPROVEMENT DISTRICT EIN 88-3773026 · last filed 990 for 2025
- CORPUS CHRISTI REGIONAL ECONOMIC DEVELOPMENT CORPORATION EIN 74-2424224 · last filed 990 for 2025