Liabilities / Assets
76th percentile
Higher debt load relative to assets than 76% of similar nonprofits.
EIN 45-3638914 • 501(c)3 • San Carlos, CA
Profile
Carlmont music boosters, inc. Was created to support and enhance the carlmont high school instrumental music program. Their mission of "promoting excellence through music education" is realized through individual donations, corporate matching funds, sales income and dedication from volunteers and community.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
76th percentile
Higher debt load relative to assets than 76% of similar nonprofits.
Liabilities / Revenue
70th percentile
Higher debt load relative to revenue than 70% of similar nonprofits.
Net Margin
42nd percentile
Higher net margin than 42% of similar nonprofits.
Top Officer Pay
81st percentile
Higher top officer pay than 81% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
46th percentile
Faster asset growth than 46% of similar nonprofits.
Revenue Growth
97th percentile
Faster revenue growth than 97% of similar nonprofits.
Assets
Down$72,473
Down $3,421 (-4.5%) from 2024
Liabilities
Up$4,473
Up $1,015 (+29%) from 2024
Net Assets
Down$68,000
Down $4,436 (-6.1%) from 2024
Revenue
Up$367,628
Up $290,094 (+374%) from 2024
Expenses
Up$372,264
Up $267,168 (+254%) from 2024
Net Income
Up-$4,636
Up $22,926 (+83%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
Carlmont music boosters, inc. Was created to support and enhance the carlmont high school instrument music program. Their mission of "promoting excellence through music education" is realized through individual donations, corporate matching funds, sale income and dedication from volunteers and community.
Carlmont music boosters, inc. Was created to support and enhance the carlmont high school instrumental music program. Their mission of "promoting excellence through music education" is realized through individual donations, corporate matching funds, sales income and dedication from volunteers and community.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Cash and Non-Interest-Bearing Accounts | $11,078 | $57,153 | ▲ $46,075 |
| Savings and Temporary Cash Investments | $64,816 | $15,320 | ▼ $49,496 |
| Total Assets | $75,894 | $72,473 | ▼ $3,421 |
| Liabilities | |||
| Other Liabilities | $3,458 | $4,473 | ▲ $1,015 |
| Total Liabilities | $3,458 | $4,473 | ▲ $1,015 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $72,436 | $68,000 | ▼ $4,436 |
| Total Net Assets Fund Balance | $72,436 | $68,000 | ▼ $4,436 |
| Total Liabilities and Net Assets / Fund Balance | $75,894 | $72,473 | ▼ $3,421 |
| Name | Title |
|---|---|
| David Elliott | President Fy |
| Kim Bishop | President Fy |
| Jordan Webster | Music Director as |
| Brian Switzer | Music Direct |
| Bethany French | Secretary |
| Molly Nguyen | Treasurer Fy |
| Linda Sonne-harrison | VP of Commun |
| Linda Beroza | VP of Volunt |
| Tanya Ivanova | VP-webmaster |
| Line Item | Amount |
|---|---|
| Other Expenses | $372,264 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| All Other Expenses | $27,384 | - | - | $27,384 |
| Fees for Services Other | $11,796 | $9,770 | - | $21,566 |
| Other Expenses | $12,523 | - | - | $12,523 |
| Total Functional Expenses | $362,494 | $9,770 | $0 | $372,264 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Cmb Instrumental Music Council | $4,473 |
“Form 990, form rrf-1 & form 199 are to be provided to all board members for review.”
“Financial statements and the conflict of interest policy is available upon request.”
“Carlmont music boosters, inc. Was created to support and enhance the carlmont high school instrumental music program. Their mission of "promoting excellence through music education" is realized through individual donations, corporate matching funds, sales income and dedication from volunteers and community.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | CARLMONT MUSIC BOOSTERS, INC. WAS CREATED TO SUPPORT AND ENHANCE THE CARLMONT HIGH SCHOOL INSTRUMENTAL MUSIC PROGRAM. THEIR MISSION OF "PROMOTING EXCELLENCE THROUGH MUSIC EDUCATION" IS REALIZED THROUGH INDIVIDUAL DONATIONS, CORPORATE MATCHING FUNDS, SALES INCOME AND DEDICATION FROM VOLUNTEERS AND COMMUNITY. |
| IRS990/AllOtherContributionsAmt | 0 | 15000 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 27384 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 27384 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | false |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | CARLMONT MUSIC BOOSTERS |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine2Txt | 0 | CARLMONT MUSIC BOOSTERS |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6505950210 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1400 ALAMEDA DE LAS PULGAS |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine2Txt | 0 | POBOX 7084 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | BELMONT |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94070 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 11078 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 57153 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 45199 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 0 |
| IRS990/CYOtherExpensesAmt | 0 | 372264 |
| IRS990/CYOtherRevenueAmt | 0 | 8941 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 313488 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -4636 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 372264 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 367628 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | CMB FUNDRAISING EFFORTS SUPPORT THE MUSIC PROGRAM WITH SHEET MUSIC, NEW INSTRUMENTS,INSTRUMENT REPAIRS, MUSIC ENRICHMENT EVENTS, UNIFORMS, ELECTRONICS, EQUIPMENTS, AND ARRANGE CLINICIAN TIME FOR STUDENTS TO RECEIVE SUPPLEMENT MUSIC INSTRUCTION. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 57586 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederatedCampaignsAmt | 0 | 30199 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 9770 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 11796 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 21566 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | LINDA BEROZA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | KIM BISHOP |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DAVID ELLIOTT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | BETHANY FRENCH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | TANYA IVANOVA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | MOLLY NGUYEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | LINDA SONNE-HARRISON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | BRIAN SWITZER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JORDAN WEBSTER |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | VP OF VOLUNT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT FY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT FY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | VP-WEBMASTER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TREASURER FY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | VP OF COMMUN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | MUSIC DIRECT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | MUSIC DIR AS |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormationYr | 0 | 2012 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 8 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 367628 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 8 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 12 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | CARLMONT MUSIC BOOSTERS, INC. WAS CREATED TO SUPPORT AND ENHANCE THE CARLMONT HIGH SCHOOL INSTRUMENTAL MUSIC PROGRAM. THEIR MISSION OF "PROMOTING EXCELLENCE THROUGH MUSIC EDUCATION" IS REALIZED THROUGH INDIVIDUAL DONATIONS, CORPORATE MATCHING FUNDS, SALES INCOME AND DEDICATION FROM VOLUNTEERS AND COMMUNITY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 72436 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 68000 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 72436 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 68000 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherExpensesGrp/Desc | 0 | FY 2024-25 TOUR EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 1 | AWARDS AND SCHOLARSHIPS |
| IRS990/OtherExpensesGrp/Desc | 2 | SHEET MUSIC/SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 3 | SKYWALKER TRIP EXPENSES |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 282175 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 14410 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 14206 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 12523 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 282175 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 14410 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 14206 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 12523 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 3458 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 4473 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | APPAREL, UNIFORM INCOME |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | OTHER INCOME |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 8938 |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 1 | 3 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 8938 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 3 |
| IRS990/OtherRevenueTotalAmt | 0 | 8941 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | KIM BISHOP |
| IRS990/PriorPeriodAdjustmentsAmt | 0 | 200 |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | FY2024-25 TOUR RECEIPTS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | CONCERT TICKETS, CONCESSIONS |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 282175 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 31313 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 282175 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 31313 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | CMB'S SECOND MISSION IS PROVIDING FINANCIAL AND LOGISTICAL SUPPORT FOR MUSIC PERFORMANCES, ARRANGING TRANSPORTATION AND CHAPERONE AT MUSIC EVENTS. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 304908 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 33355 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYOtherExpensesAmt | 0 | 105096 |
| IRS990/PYOtherRevenueAmt | 0 | 9932 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 34247 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -27562 |
| IRS990/PYTotalExpensesAmt | 0 | 105096 |
| IRS990/PYTotalRevenueAmt | 0 | 77534 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -4636 |
| IRS990/RegularMonitoringEnfrcInd | 0 | false |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 313488 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 64816 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 15320 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 45199 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 33355 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 30835 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 38044 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 42051 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 189484 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 322429 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 44179 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 280014 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 47341 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 3581 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 697544 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.00000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.00000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 1.00000 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 1.00000 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 887028 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 367628 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 77534 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 310849 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 85385 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 45632 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 887028 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 367628 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 77534 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 310849 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 85385 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 45632 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 887028 |
| 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 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 4473 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | CMB INSTRUMENTAL MUSIC COUNCIL |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 4473 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | CARLMONT MUSIC BOOSTERS, INC. WAS CREATED TO SUPPORT AND ENHANCE THE CARLMONT HIGH SCHOOL INSTRUMENTAL MUSIC PROGRAM. THEIR MISSION OF "PROMOTING EXCELLENCE THROUGH MUSIC EDUCATION" IS REALIZED THROUGH INDIVIDUAL DONATIONS, CORPORATE MATCHING FUNDS, SALES INCOME AND DEDICATION FROM VOLUNTEERS AND COMMUNITY. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | FORM 990, FORM RRF-1 & FORM 199 ARE TO BE PROVIDED TO ALL BOARD MEMBERS FOR REVIEW. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | FINANCIAL STATEMENTS AND THE CONFLICT OF INTEREST POLICY IS AVAILABLE UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990 - ORGANIZATION'S MISSION |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
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| IRS990/TotalAssetsGrp/EOYAmt | 0 | 72473 |
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| IRS990/TotalEmployeeCnt | 0 | 0 |
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| IRS990/TotalLiabilitiesEOYAmt | 0 | 4473 |
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| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 4473 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 72436 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 68000 |
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| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 72473 |
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| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
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| IRS990/USAddress/CityNm | 0 | SAN CARLOS |
| IRS990/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/USAddress/ZIPCd | 0 | 94070 |
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| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | MOLLY NGUYEN |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | TREASURER FY2024-25 |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 6505950210 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-10-23 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | CARLMONT MUSIC BOOSTERS INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | CARL |
| ReturnHeader/Filer/EIN | 0 | 453638914 |
| ReturnHeader/Filer/PhoneNum | 0 | 6505950210 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | PO BOX 7084 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | SAN CARLOS |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | CA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 940707772 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | false |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 943413641 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | CLAYTON PATTERSON EA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 433 AIRPORT BLVD SUITE 307 |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | BURLINGAME |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | CA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 940102010 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 6505916797 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2025-11-06 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | CLAYTON PATTERSON EA |
| ReturnHeader/ReturnTs | 0 | 2025-11-06T20:06:11-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2024-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2025-06-30 |
| ReturnHeader/TaxYr | 0 | 2024 |
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