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Nonprofit · EIN 33-1329617

INTERIM COMPUTER MUSEUM

Tax-exempt · TUKWILA, WA 98188

Financials

$2K$7572024$118K$47K2025
Revenue Expenses · by fiscal year end
Financials of INTERIM COMPUTER MUSEUM by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-EZ$118,426$47,355$71,071$72,314$0$72,314
December 31, 2024990-EZ$2,000$757$1,243$1,243$0$1,243
Financial details: 990-EZ for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$109,184
Program service revenue
$0
Investment income
$23
Net income from fundraising events
$9
Other revenue
$9,210

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fees and payments to contractors
$129
Occupancy
$45,549
Printing, publications and postage
$1,262
Other expenses
$415
Program services (functional)
$47,355

Balance sheet and other

Total assets, start of year
$1,243
Total assets, end of year
$72,314
Total liabilities, end of year
$0
Net assets, end of year
$72,314
Cash, savings and investments
$72,314
Gross receipts
$118,426

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-EZ for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Stephen M JonesPresident10$0
Tiffany CabralTreasurer10$0
Migiwa SeitoSecretary10$0
990-EZ for the year ended December 31, 2024: 2 people
NameTitleHours / weekCompensation
Stephen M JonesPresident20$0
Tiffany CabralDirector5$0

Address and contacts

Address (IRS master file)
998 INDUSTRY DR, TUKWILA, WA 98188-3412
Signed the 990-EZ
Stephen Jones, President
Phone
(206) 571-8580

Mission

The Interim Computer Museum strives to preserve and share the history of computing through remotely accessible emulations and vintage computer hardware with modern enhancements.

990-EZ for the year ended December 31, 2025

Program accomplishments

  • In 2024 the Interim Computer Museum made 21 vintage operating systems publically accessible for historical and educational purposes.
    Expenses $47,355

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. 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-EZ on file
2024December 31, 2024May 15, 2025990-EZ on file
2023December 31, 2023May 15, 2024Check at the IRS

IRS record

EIN
33-1329617
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)
Public charity, 50% deduction limit
Exempt since
2025
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$72,314
Income (IRS master file)
$118,426

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZDecember 2025$118,426$47,355$72,314IRS
990-EZDecember 2024$2,000$757$1,243XML

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 33-1329617).

Questions about INTERIM COMPUTER MUSEUM

What is the EIN of INTERIM COMPUTER MUSEUM?
The employer identification number (EIN) of INTERIM COMPUTER MUSEUM is 33-1329617.
Is INTERIM COMPUTER MUSEUM tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2025.
Are donations to INTERIM COMPUTER MUSEUM tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INTERIM COMPUTER MUSEUM file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of INTERIM COMPUTER MUSEUM 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 INTERIM COMPUTER MUSEUM last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
Who are the officers and directors of INTERIM COMPUTER MUSEUM?
The 990-EZ for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
How much revenue does INTERIM COMPUTER MUSEUM have?
On its 990-EZ for the year ended December 31, 2025 it reported revenue of $118,426, expenses of $47,355 and total assets of $72,314 at year end.

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