Nonprofit · EIN 93-4298183
OOSTERHOF FOUNDATION INC
Tax-exempt · SAMMAMISH, WA 98074
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $360,071 | $60,217 | $299,854 | $1,157,778 | $0 | $1,157,778 |
| December 31, 2024 | 990-PF | $1,098,290 | $14,796 | $1,083,494 | $1,178,629 | $0 | $1,178,629 |
| December 31, 2023 | 990-PF | $1,008,585 | $0 | $1,008,585 | $95,135 | $0 | $95,135 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $321,252
- Dividends
- $33,126
- Net gain from sales of assets
- $5,693
Expenses
- Grants and similar amounts paid
- $32,475
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $34,230
- Excise tax on investment income
- $387
Balance sheet and other
- Total assets, start of year
- $1,178,629
- Total assets, end of year
- $1,157,778
- Total liabilities, end of year
- $0
- Net assets, end of year
- $1,157,778
- Fair market value of assets
- $1,579,305
- Qualifying distributions
- $34,230
- Net investment income
- $38,452
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-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ERNST P OOSTERHOF 24826 NE 20TH ST, SAMMAMISH, WA 98074 | DIRECTOR | 1 | $0 |
| KATHY OOSTERHOF 24826 NE 20TH ST, SAMMAMISH, WA 98074 | DIRECTOR | 1 | $0 |
990-PF for the year ended December 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ERNST P OOSTERHOF 24826 NE 20TH ST, SAMMAMISH, WA 98074 | DIRECTOR | 1 | $0 |
| KATHY OOSTERHOF 24826 NE 20TH ST, SAMMAMISH, WA 98074 | DIRECTOR | 1 | $0 |
990-PF for the year ended December 31, 2023: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ERNST P OOSTERHOF 24826 NE 20TH ST, SAMMAMISH, WA 98074 | DIRECTOR | 1 | $0 |
| KATHY OOSTERHOF 24826 NE 20TH ST, SAMMAMISH, WA 98074 | DIRECTOR | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 24826 NE 20TH ST, SAMMAMISH, WA 98074-3340
- Signed the 990-PF
- ERNST P OOSTERHOF, DIRECTOR
- Phone
- (425) 233-4648
- Return prepared by
- CREATIVE PLANNING TAX LLC
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 93-4298183
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2024
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T22)
- Assets (IRS master file)
- $1,157,778
- Income (IRS master file)
- $405,753
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $360,071 | $60,217 | $1,157,778 | IRS |
| 990-PF | December 2024 | $1,098,290 | $14,796 | $1,178,629 | IRS |
| 990-PF | December 2023 | $1,008,585 | $0 | $95,135 | XML |
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 93-4298183).
Questions about OOSTERHOF FOUNDATION INC
- What is the EIN of OOSTERHOF FOUNDATION INC?
- The employer identification number (EIN) of OOSTERHOF FOUNDATION INC is 93-4298183.
- Is OOSTERHOF FOUNDATION INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2024.
- Are donations to OOSTERHOF FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does OOSTERHOF FOUNDATION INC file?
- Form 990-PF. Private foundations file every year.
- When is the next return of OOSTERHOF FOUNDATION 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 OOSTERHOF FOUNDATION INC last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of OOSTERHOF FOUNDATION INC?
- The 990-PF for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does OOSTERHOF FOUNDATION INC have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $360,071, expenses of $60,217 and total assets of $1,157,778 at year end.
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