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Nonprofit · EIN 45-3748733

STEM HOUSE

Tax-exempt (reinstated) · BURKE, VA 22009

Address and contacts

Address (IRS master file)
PO BOX 10502, BURKE, VA 22009-0502
In care of
% KRISTINA ANDERSON
Mailing address (990-N for 2025)
PO Box 10502, Burke VA 22009
Principal officer (990-N for 2025)
KL Anderson, PO Box 10502, Burke VA 22009

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 December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for STEM HOUSE

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
45-3748733
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2018
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Revocation and reinstatement

Exemption revoked
May 15, 2014
Posted by the IRS
February 6, 2018
Reinstated
Effective December 15, 2017

From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: KL Anderson
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Kristi Anderson
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Kristina Anderson
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Kris Anderson
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: KL Anderson
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019December 31, 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 45-3748733).

Questions about STEM HOUSE

What is the EIN of STEM HOUSE?
The employer identification number (EIN) of STEM HOUSE is 45-3748733.
Is STEM HOUSE tax-exempt?
Yes. The IRS revoked its exemption on May 15, 2014 and reinstated it effective December 15, 2017.
Are donations to STEM HOUSE tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does STEM HOUSE file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of STEM HOUSE due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did STEM HOUSE last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of STEM HOUSE?
The 990-N for 2025 names KL Anderson.

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