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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 31-0960499

INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS

Also known as 51 LODGE

Tax-exempt · PLAINFIELD, IN 46168

Address and contacts

Address (IRS master file)
859 BROOKSIDE LN, PLAINFIELD, IN 46168-2105
In care of
% MARK STARLIN II ST
Mailing address (990-N for 2025)
859 Brookside Lane, Plainfield IN 46168
Principal officer (990-N for 2025)
Mark Starlin, 859 Brookside Lane, Plainfield IN 46168

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, 2025990-N on file
2023June 30, 2024November 15, 2024990-N on file

File the 2026 990-N for INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS

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

IRS record

EIN
31-0960499
Tax-exempt status
501(c)(5): Labor, agricultural or horticultural organization
Donations deductible
No
Exempt since
1954
Accounting year ends
June
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Mark Starlin
June 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Mark Starlin II
June 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Mark Starlin II
June 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Mark D Starlin II
June 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Mark D Starlin II
June 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Mark Wilson
June 30, 2020≤ $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 31-0960499).

Questions about INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS

What is the EIN of INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS?
The employer identification number (EIN) of INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS is 31-0960499.
Is INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(5) since 1954.
Are donations to INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS 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 INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS 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 INTERNATIONAL BROTHERHOOD OF BOILERMAKERS IRON SHIP BUILDERS?
The 990-N for 2025 names Mark Starlin.

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