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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 91-0977096

MERCER ISLAND HISTORICAL SOCIETY

Tax-exempt · MERCER ISLAND, WA 98040

Address and contacts

Address (IRS master file)
PO BOX 111, MERCER ISLAND, WA 98040-0111
Mailing address (990-N for 2025)
PO Box 111, Mercer Island WA 98040
Principal officer (990-N for 2025)
Terry Moreman, 3628 72nd Pl SE, Mercer Island WA 98040

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 MERCER ISLAND HISTORICAL SOCIETY

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

IRS record

EIN
91-0977096
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
1980
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Terry Moreman
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Terry Moreman
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Terry Moreman
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Terry Moreman
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Terry Moreman
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: Terry Moreman
December 31, 2018≤ $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 91-0977096).

Questions about MERCER ISLAND HISTORICAL SOCIETY

What is the EIN of MERCER ISLAND HISTORICAL SOCIETY?
The employer identification number (EIN) of MERCER ISLAND HISTORICAL SOCIETY is 91-0977096.
Is MERCER ISLAND HISTORICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1980.
Are donations to MERCER ISLAND HISTORICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MERCER ISLAND HISTORICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MERCER ISLAND HISTORICAL SOCIETY 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 MERCER ISLAND HISTORICAL SOCIETY 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 MERCER ISLAND HISTORICAL SOCIETY?
The 990-N for 2025 names Terry Moreman.

Other nonprofits in MERCER ISLAND

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