Nonprofit · EIN 23-2493715
THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION
Tax-exempt · CHAMBERSBURG, PA 17201
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990-PF | $32,257 | $7,762 | $24,495 | $661,304 | $0 | $661,304 |
| June 30, 2024 | 990-PF | $21,955 | $2,696 | $19,259 | $636,998 | $0 | $636,998 |
| June 30, 2023 | 990-PF | $36,177 | $1,582 | $34,595 | $617,805 | $0 | $617,805 |
Financial details: 990-PF for the year ended June 30, 2025
Revenue
- Dividends
- $38,673
- Interest
- $54
- Net gain from sales of assets
- -$6,476
- Other income
- $6
Expenses
- Grants and similar amounts paid
- $1,225
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $4,441
- Excise tax on investment income
- $473
Balance sheet and other
- Total assets, start of year
- $636,998
- Total assets, end of year
- $661,304
- Total liabilities, end of year
- $0
- Net assets, end of year
- $661,304
- Fair market value of assets
- $1,644,329
- Qualifying distributions
- $4,441
- Net investment income
- $37,345
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 June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM K NITTERHOUSE PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 1 | $0 |
| DIANE R NITTERHOUSE PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
| KAREN N DILLER PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
| LAURA E MARTIN PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
990-PF for the year ended June 30, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM K NITTERHOUSE PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 1 | $0 |
| DIANE R NITTERHOUSE PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
| KAREN N DILLER PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
| LAURA E MARTIN PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
990-PF for the year ended June 30, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM K NITTERHOUSE PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 1 | $0 |
| DIANE R NITTERHOUSE PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
| KAREN N DILLER PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
| LAURA E MARTIN PO BOX 2013, CHAMBERSBURG, PA 172018013 | TRUSTEE | 0.5 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 2013, CHAMBERSBURG, PA 17201-0813
- In care of
- % WILLIAM K NITTERHOUSE
- Signed the 990-PF
- WILLIAM K NITTERHOUSE, TRUSTEE
- Phone
- (717) 229-1245
- Return prepared by
- RKL LLP
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990-PF on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990-PF on file |
IRS record
- EIN
- 23-2493715
- 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
- 1988
- Accounting year ends
- June
- Files
- Form 990-PF
- Assets (IRS master file)
- $661,304
- Income (IRS master file)
- $125,166
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | June 2025 | $32,257 | $7,762 | $661,304 | XML |
| 990-PF | June 2024 | $21,955 | $2,696 | $636,998 | XML |
| 990-PF | June 2023 | $36,177 | $1,582 | $617,805 | XML |
| 990-PF | June 2022 | – | – | – | IRS |
| 990-PF | June 2021 | – | – | – | IRS |
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 23-2493715).
Questions about THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION
- What is the EIN of THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION?
- The employer identification number (EIN) of THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION is 23-2493715.
- Is THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1988.
- Are donations to THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended June 2025.
- Who are the officers and directors of THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION?
- The 990-PF for the year ended June 30, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does THE WILLIAM AND DIANE NITTERHOUSE FOUNDATION have?
- On its 990-PF for the year ended June 30, 2025 it reported revenue of $32,257, expenses of $7,762 and total assets of $661,304 at year end.
Other nonprofits in CHAMBERSBURG
- KEYSTONE RURAL HEALTH CENTER EIN 25-1546810 · last filed 990 for 2025
- MENNO-HAVEN INC EIN 23-6276101 · last filed 990 for 2024
- WILSON COLLEGE EIN 23-1352692 · last filed 990 for 2025
- FOLIUM INC EIN 23-2205138 · last filed 990 for 2025
- SHALOM CHRISTIAN ACADEMY ASSOCIATION EIN 23-7440190 · last filed 990 for 2025
- FIRST START PARTNERSHIPS FOR CHILDREN AND FAMILIES INC EIN 23-1152007 · last filed 990 for 2025
- SPIRITRUST LUTHERAN HOME CARE & HOSPICE EIN 25-1689293 · last filed 990 for 2024
- FAMILY CARE SERVICES INC EIN 23-2059183 · last filed 990 for 2025