Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 35-2749691

SIGMA THETA TAU INTERNATIONAL

Also known as ALPHA BETA ETA CHAPTER 605

Tax-exempt · SAN DIEGO, CA 92108

Address and contacts

Address (IRS master file)
404 CAMINO DEL RIO S STE 102, SAN DIEGO, CA 92108-3586
In care of
% JENNIFER BILLINGSLEY
Mailing address (990-N for 2025)
859 Mt Vernon Hwy Suite 200, Sand Springs GA 30328
Principal officer (990-N for 2025)
Lauren Zimmerman, 1740 W Ivanhoe St, Chandler AZ 85224

California records

California keeps its own records of charities and corporations. Search them by EIN 35-2749691 or by the name SIGMA THETA TAU INTERNATIONAL.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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 yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026990-N on file
2024June 30, 2025November 17, 2025Check at the IRS
2023June 30, 2024November 15, 2024990-N on file

File the 2026 990-N for SIGMA THETA TAU INTERNATIONAL

Due November 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
35-2749691
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)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Lauren Zimmerman
June 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Jennifer Billingsley
June 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Linda Haen
June 30, 2023≤ $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 35-2749691).

Questions about SIGMA THETA TAU INTERNATIONAL

What is the EIN of SIGMA THETA TAU INTERNATIONAL?
The employer identification number (EIN) of SIGMA THETA TAU INTERNATIONAL is 35-2749691.
Is SIGMA THETA TAU INTERNATIONAL tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1954.
Which annual return does SIGMA THETA TAU INTERNATIONAL file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SIGMA THETA TAU INTERNATIONAL 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 INTERNATIONAL 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 INTERNATIONAL?
The 990-N for 2025 names Lauren Zimmerman.

Other nonprofits in SAN DIEGO

All nonprofits in SAN DIEGO · California