Nonprofit · EIN 13-1347212
THE CHATHAM HOUSE FOUNDATION INC
Tax-exempt · WASHINGTON, DC 20006
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $702,104 | $339,193 | $362,911 | $452,343 | $0 | $452,343 |
| December 31, 2024 | 990 | $505,674 | $624,210 | -$118,536 | $89,433 | $0 | $89,433 |
| December 31, 2023 | 990 | $261,754 | $154,366 | $107,388 | $207,969 | $0 | $207,969 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $698,325
- Program service revenue
- $0
- Investment income
- $3,779
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $325,000
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Legal fees
- $12,000
- Program services (functional)
- $325,000
- Management and general (functional)
- $14,193
Balance sheet and other
- Total assets, start of year
- $89,433
- Total assets, end of year
- $452,343
- Total liabilities, end of year
- $0
- Net assets, end of year
- $452,343
- Net assets without donor restrictions
- $452,343
- Gross receipts
- $702,104
- Employees
- 0
- Volunteers
- 4
- Year formed
- 1982
- State of legal domicile
- DE
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 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| BRIAN C McK HENDERSON | PRESIDENT AND DIRECTOR Trustee or director, Officer | 1 | $0 |
| SUSAN SCHOENFELD HARRINGTON | SECRETARY AND DIRECTOR Trustee or director, Officer | 1 | $0 |
| PHOEBE WOOD | TREASURER AND DIRECTOR Trustee or director, Officer | 1 | $0 |
| SIMON FLANAGAN | DIRECTOR Trustee or director | 0.5 | $0 |
990 for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| BRIAN C McK HENDERSON | PRESIDENT AND DIRECTOR Trustee or director, Officer | 0.5 | $0 |
| SUSAN SCHOENFELD HARRINGTON | SECRETARY AND DIRECTOR Trustee or director, Officer | 0.5 | $0 |
| PHOEBE WOOD | DIRECTOR AND TREASURER Trustee or director, Officer | 0.5 | $0 |
| SIMON FLANAGAN | DIRECTOR Trustee or director, Officer | 0.5 | $0 |
990 for the year ended December 31, 2023: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| BRIAN C McK HENDERSON | PRESIDENT AND DIRECTOR Trustee or director, Officer | 0.5 | $0 |
| BERNARD GROVEMAN | TREASURER AND DIRECTOR Trustee or director, Officer | 0.5 | $0 |
| SUSAN SCHOENFELD HARRINGTON | SECRETARY AND DIRECTOR Trustee or director, Officer | 0.5 | $0 |
Address and contacts
- Address (IRS master file)
- CO SLQ FLAHERTY 1725 I ST NW ST 300, WASHINGTON, DC 20006-0000
- In care of
- % ROHA & FLAHERTY
- Principal officer (990 for 2025)
- BRIAN C McK HENDERSON, co SLQ FLAHERTY, 1725 I ST NW STE 300, WASHINGTON, DC 20006
- Signed the 990
- PHOEBE WOOD, TREASURER
- Phone
- (202) 833-0033
- Return prepared by
- LAW OFFICE OF SUSAN L Q FLAHERTY
Mission
PROMOTE STUDY OF INTERNATIONAL AFFAIRS
Program accomplishments
- PROVIDE GRANTS TO PROMOTE INTERNATIONAL UNDERSTANDINGExpenses $325,000 · grants $325,000
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 year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 13-1347212
- 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
- 1983
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- International, foreign affairs and national security (Q20)
- Assets (IRS master file)
- $452,343
- Income (IRS master file)
- $702,104
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $702,104 | $339,193 | $452,343 | XML |
| 990 | December 2024 | $505,674 | $624,210 | $89,433 | XML |
| 990 | December 2023 | $261,754 | $154,366 | $207,969 | XML |
| 990 | December 2022 | $758,139 | $833,556 | $100,581 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | 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 13-1347212).
Questions about THE CHATHAM HOUSE FOUNDATION INC
- What is the EIN of THE CHATHAM HOUSE FOUNDATION INC?
- The employer identification number (EIN) of THE CHATHAM HOUSE FOUNDATION INC is 13-1347212.
- Is THE CHATHAM HOUSE FOUNDATION INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1983.
- Are donations to THE CHATHAM HOUSE FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does THE CHATHAM HOUSE FOUNDATION INC 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 THE CHATHAM HOUSE 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 THE CHATHAM HOUSE FOUNDATION INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of THE CHATHAM HOUSE FOUNDATION INC?
- The 990 for the year ended December 31, 2025 names BRIAN C McK HENDERSON.
- Who are the officers and directors of THE CHATHAM HOUSE FOUNDATION INC?
- The 990 for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does THE CHATHAM HOUSE FOUNDATION INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $702,104, expenses of $339,193 and total assets of $452,343 at year end.
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