Liabilities / Assets
59th percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 82-4087225 • 501(c)3 • Cambridge, MA
Profile
The Cambridge Math Circle was established to give elementary and middle school students in Cambridge, MA and surrounding towns a chance to experience deep, fascinating math and meet others who like solving puzzles and stretching their minds. CMC aims to serve all students, with a special focus on those who are traditionally underrepresented in STEM fields.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
59th percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
61st percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
25th percentile
Higher net margin than 25% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
21st percentile
Faster asset growth than 21% of similar nonprofits.
Revenue Growth
54th percentile
Faster revenue growth than 54% of similar nonprofits.
Assets
Down$111,974
Down $67,345 (-38%) from 2023
Liabilities
Flat$0
Flat from 2023
Net Assets
Down$111,974
Down $67,345 (-38%) from 2023
Revenue
Up$399,548
Up $6,333 (+1.6%) from 2023
Expenses
Up$466,893
Up $172,263 (+58%) from 2023
Net Income
Down-$67,345
Down $165,930 (-168%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
The Cambridge Math Circle was established to give elementary and middle school students in Cambridge, MA and surrounding towns a chance to experience deep, fascinating math and meet others who like solving puzzles and stretching their minds. CMC aims to serve all students, with a special focus on those who are traditionally underrepresented in STEM fields.
Enrichment mathematics education for K-8 students with an emphasis on outreach to groups underrepresented in STEM
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Cash and Non-Interest-Bearing Accounts | $159,319 | $82,807 | ▼ $76,512 |
| Accounts Receivable | $20,000 | $29,167 | ▲ $9,167 |
| Total Assets | $179,319 | $111,974 | ▼ $67,345 |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $179,319 | $111,974 | ▼ $67,345 |
| Total Net Assets Fund Balance | $179,319 | $111,974 | ▼ $67,345 |
| Total Liabilities and Net Assets / Fund Balance | $179,319 | $111,974 | ▼ $67,345 |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Nataliya Yufa | President, Executive Director | FT | $122,917 | $122,917 |
| Name | Title |
|---|---|
| Fetiya Omer | Director |
| Hari Prasad Thadakamalla | Director |
| Josh Greene | Director |
| Kim Bostic | Director |
| Doug Marshall | Director, Secretary, Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $258,122 |
| Other Expenses | $208,771 |
| Total Fundraising Expense | $27,226 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Current Officers, Directors, Trustees, and Key Employees | $92,188 | $18,438 | $12,292 | $122,918 |
| Other Salaries and Wages | $70,337 | $27,997 | $10,926 | $109,260 |
| Payroll Taxes | $12,051 | $3,443 | $1,722 | $17,216 |
| Other Expenses | $16,860 | $0 | $0 | $16,860 |
| Other Employee Benefits | $6,110 | $2,618 | $0 | $8,728 |
| Fees for Services Accounting | $0 | $6,500 | $0 | $6,500 |
| All Other Expenses | $1 | $3,121 | $800 | $3,922 |
| Insurance | $0 | $3,415 | $0 | $3,415 |
| Advertising | $0 | $1,403 | $0 | $1,403 |
| Travel | $1,295 | $0 | $0 | $1,295 |
| Office Expenses | $0 | $1,039 | $0 | $1,039 |
| Occupancy | $924 | $0 | $0 | $924 |
| Total Functional Expenses | $366,002 | $73,665 | $27,226 | $466,893 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“The Board of Directors is provided with a copy of the organizations Form 990 and given the opportunity to ask questions at the next Board meeting (but not necessarily before the filing deadline). The Treasurer reviews the form thoroughly before it is submitted..”
“Governing and policy documents are available to the public upon request.”
“The Executive Directors salary for each calendar year is determined at a meeting of the Board of Directors the previous December, from which the Executive Director (who is also the President) recuses herself. The Treasurer prepares data for the meeting, including top management salaries at similar organizations in the area, cost of living adjustments, etc. The Board votes on a salary and notifies the Executive Director in writing.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
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|---|---|---|
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| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 29167 |
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| IRS990/ActivityOrMissionDesc | 0 | Enrichment mathematics education for K-8 students with an emphasis on outreach to groups underrepresented in STEM |
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| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 1403 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 1403 |
| IRS990/AllOtherContributionsAmt | 0 | 162870 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 800 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 3121 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 1 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 3922 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Doug Marshall |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6179472597 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 129 Hancock Street |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Cambridge |
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| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 0 |
| IRS990/CYOtherExpensesAmt | 0 | 208771 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 216678 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -67345 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 258122 |
| IRS990/CYTotalExpensesAmt | 0 | 466893 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 27226 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 399548 |
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| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | The Cambridge Math Circle conducted enrichment mathematics classes for elementary and middle school students, reaching 150-200 students per week for three 10-week sessions during the school year and a 3-week long summer camp. We also ran lunchtime sessions in Cambridge Public Schools and a free public math festival attended by about 150 students. |
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| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 6500 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Nataliya Yufa |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Doug Marshall |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Hari Prasad Thadakamalla |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Josh Greene |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Kim Bostic |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 122917 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | President, Executive Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Director, Secretary, Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Director |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormationYr | 0 | 2018 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 6 |
| IRS990/GovernmentGrantsAmt | 0 | 20000 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 399548 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 5 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 0 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 3415 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 3415 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | Enrichment mathematics education for K-8 students with an emphasis on outreach to groups underrepresented in STEM |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 179319 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 111974 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 179319 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 111974 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 924 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 924 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1039 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 1039 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 2618 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 6110 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 8728 |
| IRS990/OtherExpensesGrp/Desc | 0 | Consultant |
| IRS990/OtherExpensesGrp/Desc | 1 | Contractors |
| IRS990/OtherExpensesGrp/Desc | 2 | Program Expenses |
| IRS990/OtherExpensesGrp/Desc | 3 | Program Supplies |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 1486 |
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| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 5691 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 0 |
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| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 0 |
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| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 7140 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 16860 |
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| IRS990/OtherExpensesGrp/TotalAmt | 1 | 164787 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 7140 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 16860 |
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| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 109260 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 1722 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 3443 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 12051 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 17216 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | Nataliya Yufa |
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| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Program Service Fees |
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| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 216678 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
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| IRS990/PYOtherExpensesAmt | 0 | 152471 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 165295 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 98585 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 142159 |
| IRS990/PYTotalExpensesAmt | 0 | 294630 |
| IRS990/PYTotalRevenueAmt | 0 | 393215 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
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| IRS990/ReconcilationRevenueExpnssAmt | 0 | -67345 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
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| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 0 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 182870 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 227920 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 134145 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 65530 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 35802 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 646267 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 1.00000 |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 1.00000 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 646267 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 182870 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 227920 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 134145 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 65530 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 35802 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 646267 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 646267 |
| IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | true |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | The Board of Directors is provided with a copy of the organizations Form 990 and given the opportunity to ask questions at the next Board meeting (but not necessarily before the filing deadline). The Treasurer reviews the form thoroughly before it is submitted.. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | Governing and policy documents are available to the public upon request. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | The Executive Directors salary for each calendar year is determined at a meeting of the Board of Directors the previous December, from which the Executive Director (who is also the President) recuses herself. The Treasurer prepares data for the meeting, including top management salaries at similar organizations in the area, cost of living adjustments, etc. The Board votes on a salary and notifies the Executive Director in writing. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Pt VI, Line 11b |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Pt VI, Line 18 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Pt VI, Line 15a |
| IRS990/SchoolOperatingInd | 0 | false |
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| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 179319 |
| IRS990/TotalAssetsEOYAmt | 0 | 111974 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 179319 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 111974 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 182870 |
| IRS990/TotalEmployeeCnt | 0 | 5 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 27226 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 73665 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 366002 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 466893 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 179319 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 111974 |
| IRS990/TotalOtherCompensationAmt | 0 | 0 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 366002 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 216678 |
| IRS990/TotalReportableCompFromOrgAmt | 0 | 122917 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 216678 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 399548 |
| IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/TotalVolunteersCnt | 0 | 10 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 179319 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 111974 |
| IRS990/TotReportableCompRltdOrgAmt | 0 | 0 |
| IRS990/TravelGrp/FundraisingAmt | 0 | 0 |
| IRS990/TravelGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/TravelGrp/ProgramServicesAmt | 0 | 1295 |
| IRS990/TravelGrp/TotalAmt | 0 | 1295 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 37 High Street Apt 2 |
| IRS990/USAddress/CityNm | 0 | CAMBRIDGE |
| IRS990/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/USAddress/ZIPCd | 0 | 02138 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 6 |
| IRS990/VotingMembersIndependentCnt | 0 | 5 |
| IRS990/WebsiteAddressTxt | 0 | www.cambridgemathcircle.org |
| IRS990/WhistleblowerPolicyInd | 0 | false |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | Nataliya Yufa |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | President, Executive Director |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 6174547627 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-05-13 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | CAMBRIDGE MATH CIRCLE INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | CAMB |
| ReturnHeader/Filer/EIN | 0 | 824087225 |
| ReturnHeader/Filer/PhoneNum | 0 | 6174547627 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 37 High Street Apt 2 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | CAMBRIDGE |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 02138 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | true |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 043453038 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | Sambo Onos & Company LLC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 31 West St |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | Randolph |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 02368 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 7818853912 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2025-10-15 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | Jean Etienne CPA |
| ReturnHeader/PreparerPersonGrp/SelfEmployedInd | 0 | X |
| ReturnHeader/ReturnTs | 0 | 2025-10-15T10:25:37-07:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2024-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-12-31 |
| ReturnHeader/TaxYr | 0 | 2024 |
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