Nonprofit · EIN 46-3636266
UNITED MATH CIRCLES FOUNDATION
Tax-exempt · EL CERRITO, CA 94530
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $551,286 | $619,257 | -$67,971 | $769,220 | $0 | $769,220 |
| June 30, 2024 | 990 | $737,943 | $613,591 | $124,352 | $837,191 | $0 | $837,191 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $15,843
- Program service revenue
- $535,443
- Investment income
- $0
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $265,565
- Other salaries and wages
- $245,309
- Salaries, compensation and benefits (total)
- $554,700
- Professional fundraising fees
- $0
- Accounting fees
- $2,681
- Travel
- $1,274
- Program services (functional)
- $366,389
- Management and general (functional)
- $252,868
Balance sheet and other
- Total assets, start of year
- $837,191
- Total assets, end of year
- $769,220
- Total liabilities, end of year
- $0
- Net assets, end of year
- $769,220
- Net assets without donor restrictions
- $769,220
- Gross receipts
- $551,286
- Employees
- 46
- Volunteers
- 70
- Year formed
- 2013
- State of legal domicile
- CA
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 June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Zvezdelina Stankova | CEO Trustee or director, Officer | 36 | $108,705 |
| Laura Givental | COO Trustee or director, Officer | 30 | $86,950 |
| Peter Koroteev | CFO Trustee or director, Officer | 0.01 | $15,250 |
| Maria Nemirovskaya | Board member Trustee or director | 0.01 | $14,700 |
| Patricio Angulo | MTRW Instructor Officer | 3 | $12,648 |
| Quan Lam | President Trustee or director, Officer | 0.01 | $0 |
| Anna Ratner | Secretary Trustee or director, Officer | 0.01 | $0 |
| Christopher Overton | Board member Trustee or director | 0.01 | $0 |
| Ivan Matic | Board member Trustee or director | 0.01 | $0 |
| Paul Zeitz | Board member Trustee or director | 0.01 | $0 |
| Slobodan Simic | Board member Trustee or director | 0.01 | $0 |
| Dmitri Mironov | Board member Trustee or director | 0.01 | $0 |
| Richard Kubelka | Board member Trustee or director | 0.01 | $0 |
990 for the year ended June 30, 2024: 13 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Zvezdelina Stankova | CEO Trustee or director, Officer | 15 | $124,908 |
| Laura Givental | COO Trustee or director, Officer | 30 | $75,540 |
| Kelli Talaska | Executive Dir. Officer | 8 | $23,384 |
| Peter Koroteev | CFO Trustee or director, Officer | 3 | $18,563 |
| Paul Zeitz | Board member Trustee or director | 0.2 | $905 |
| Quan Lam | President Trustee or director, Officer | 0.2 | $0 |
| Anna Ratner | Secretary Trustee or director, Officer | 0.2 | $0 |
| Christopher Overton | Board member Trustee or director | 0.2 | $0 |
| Ivan Matic | Board member Trustee or director | 0.2 | $0 |
| Maria Nemirovskaya | Board member Trustee or director | 0.2 | $0 |
| Slobodan Simic | Board member Trustee or director | 0.2 | $0 |
| Dmitri Mironov | Board member Trustee or director | 0.2 | $0 |
| Richard Kubelka | Board member Trustee or director | 0.2 | $0 |
Address and contacts
- Address (IRS master file)
- 5426 HILLSIDE AVE, EL CERRITO, CA 94530-1451
- Principal officer (990 for 2024)
- Zvezdelina Stankova, 5426 Hillside Ave, El Cerrito, CA 94530
- Signed the 990
- Laura Givental, CEO
- Phone
- (341) 333-8921
- Return prepared by
- Iryna AC
California records
California keeps its own records of charities and corporations. Search them by EIN 46-3636266 or by the name UNITED MATH CIRCLES FOUNDATION.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
The purpose of the United Math Circles Foundation (UMCF) is to enrich the mathematical education and to advance mathematical knowledge and skills among the students in grades 1 to 12, at the Berkeley Math Circle-Upper, Berkeley Math Circle-Elementary, San Jose Math Circle, and any other circles and similar programs that fall under its organizational and financial umbrella, and to carry on other charitable and educational activities associated with this goal. The UMCF facilitates mathematical circles and similar programs to emulate famous Eastern European models, draw kids to mathematics, prepare them for mathematical contests, introduce them to the wonders of beautiful mathematical theories, and encourage them to undertake future careers linked with mathematics, whether as mathematicians, mathematics educators, economists, or business entrepreneurs. The UMCF programs aim at providing an interaction media and stimulating environment, both encouraging further involvement from students al
Program accomplishments
- BMC Elementary is the after-school math program that has 877 students enrolled 1st-4th graders preparing for math contest, careers in math, theories, etc.(Fall and Spring, session is 1 hr) 30 sessions x 1 hr x 12 classes per week ( 9 classes on Tuesday, 3 classes on Wednesday) + (Summer, each session is 3 hr) (5 morning + 2 afternoon sessions) x 3 hr x 5 instructors = 360 + 75 = 435 hr/yr.Expenses $193,880 · revenue $343,215
- BMC Upper is the after-school math program that has 893 students enrolled 5th - 12th grade studying to become math scientists, educators, etc.BMC: 5 levels meet once a week for an average of 1.75 hours each week for two semesters of 15 weeks each, including two final colloquiums. MTRW: 4 levels meet once a week for 3hrs, split into 1hr topics for two semesters of 15 weeks each.Expenses $172,509 · revenue $192,228
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 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 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 46-3636266
- 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
- 2014
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B99)
- Assets (IRS master file)
- $769,220
- Income (IRS master file)
- $551,286
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $551,286 | $619,257 | $769,220 | IRS |
| 990 | June 2024 | $737,943 | $613,591 | $837,191 | XML |
| 990 | June 2023 | $819,278 | $752,989 | $712,839 | IRS |
| 990 | June 2022 | – | – | – | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | 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 46-3636266).
Questions about UNITED MATH CIRCLES FOUNDATION
- What is the EIN of UNITED MATH CIRCLES FOUNDATION?
- The employer identification number (EIN) of UNITED MATH CIRCLES FOUNDATION is 46-3636266.
- Is UNITED MATH CIRCLES FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2014.
- Are donations to UNITED MATH CIRCLES FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does UNITED MATH CIRCLES FOUNDATION 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 UNITED MATH CIRCLES 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 UNITED MATH CIRCLES FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of UNITED MATH CIRCLES FOUNDATION?
- The 990 for the year ended June 30, 2025 names Zvezdelina Stankova.
- Who are the officers and directors of UNITED MATH CIRCLES FOUNDATION?
- The 990 for the year ended June 30, 2025 lists 13 people; 5 received compensation from the organization, the highest $108,705 (Zvezdelina Stankova, CEO).
- How much revenue does UNITED MATH CIRCLES FOUNDATION have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $551,286, expenses of $619,257 and total assets of $769,220 at year end.
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