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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 39-4809445

COLORADO MATH CIRCLE

Tax-exempt · BOULDER, CO 80303

Financials

$51K$29K2025
Revenue Expenses · by fiscal year end
Financials of COLORADO MATH CIRCLE by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2026990-EZ$50,581$29,106$21,475$21,475$0$21,475
Financial details: 990-EZ for the year ended June 30, 2026

Revenue

Contributions, gifts and grants
$23,029
Program service revenue
$26,645
Investment income
$0
Other revenue
$907

Expenses

Grants and similar amounts paid
$200
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Other expenses
$28,906
Program services (functional)
$28,671

Balance sheet and other

Total assets, start of year
$0
Total assets, end of year
$21,475
Total liabilities, end of year
$0
Net assets, end of year
$21,475
Cash, savings and investments
$21,475
Gross receipts
$50,581

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 June 30, 2026, highest compensation first.

NameTitleHours / weekCompensation
Silva ChangPresident, Treasurer, Co-Executive Director4$0
Thomas DavidsSecretary, Co-Executive Director4$0
Xiao ZhangDirector1$0

Address and contacts

Address (IRS master file)
340 FOX DR, BOULDER, CO 80303-3532
In care of
% SILVA CHANG
Signed the 990-EZ
Silva Chang, President
Phone
(720) 600-4599

Mission

Math enrichment programs for K-12 students

990-EZ for the year ended June 30, 2026

Program accomplishments

  • Trip to ARML national competition for Colorado team of 31 students in grades 8-12
    Expenses $26,747 · grants $200
  • Colorado Math Circle meetings (in person and remote) and contests for 115 students in grades 6-12
    Expenses $1,924

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 yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026990-EZ on file
2024June 30, 2025November 17, 2025Check at the IRS
2023June 30, 2024November 15, 2024Check at the IRS

File the 2026 990-EZ for COLORADO MATH CIRCLE

Due November 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
39-4809445
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
2025
Accounting year ends
June
Files
Form 990 or 990-EZ
Category (NTEE)
Education (B90)
Assets (IRS master file)
$21,475
Income (IRS master file)
$50,581

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZJune 2026$50,581$29,106$21,475XML

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 39-4809445).

Questions about COLORADO MATH CIRCLE

What is the EIN of COLORADO MATH CIRCLE?
The employer identification number (EIN) of COLORADO MATH CIRCLE is 39-4809445.
Is COLORADO MATH CIRCLE tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2025.
Are donations to COLORADO MATH CIRCLE tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does COLORADO MATH CIRCLE 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 COLORADO MATH CIRCLE due?
The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did COLORADO MATH CIRCLE last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended June 2026.
Who are the officers and directors of COLORADO MATH CIRCLE?
The 990-EZ for the year ended June 30, 2026 lists 3 people; 0 received compensation from the organization.
How much revenue does COLORADO MATH CIRCLE have?
On its 990-EZ for the year ended June 30, 2026 it reported revenue of $50,581, expenses of $29,106 and total assets of $21,475 at year end.

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