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Nonprofit · EIN 11-6035624

CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC

Tax-exempt · WASHINGTON, DC 20016

Address and contacts

Address (IRS master file)
4410 MASSACHUSETTS AVE NW BOX 174, WASHINGTON, DC 20016-5561
In care of
% THOMAS HOLBIK
Mailing address (990-N for 2025)
4410 Massachusetts Ave NW Box 174, Washington DC 20016
Principal officer (990-N for 2025)
Thomas Holbik, 313 Country Club Road, Newton MA 02459

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 CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC

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

IRS record

EIN
11-6035624
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Group exemption
Exempt since
1967
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Group exemption
1858 (3 member organizations)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Thomas Holbik
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Thomas Holbik
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Thomas Holbik
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Thomas Holbik
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: THOMAS HOLBIK
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: THOMAS HOLBIK
December 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 11-6035624).

Questions about CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC

What is the EIN of CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC?
The employer identification number (EIN) of CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC is 11-6035624.
Is CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1967.
Are donations to CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Group exemption).
Which annual return does CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC 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 CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC 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 CZECHOSLOVAK SOCIETY OF ARTS AND SCIENCES INC?
The 990-N for 2025 names Thomas Holbik.

Organizations in its group exemption (3)

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