Civic Intelligence

Knickerbocker Tennis Foundation

EIN 45-5210489 • 501(c)3 • Brooklyn, NY

Profile

To keep people active and healthy by playing tennis

513 3rd StreetBrooklyn, NY 11215-1301

n/A

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

Score unavailable

No value available

Liabilities-to-assets requires both liabilities and assets on the latest valid filing.

Source year 2024

Liabilities / Revenue

Score unavailable

No value available

Liabilities-to-revenue requires both liabilities and revenue on the latest valid filing.

Source year 2024

Net Margin

27th percentile

-3.6%

Higher net margin than 27% of similar nonprofits.

NTEE N • <$500k nonprofits • Source year 2024

Top Officer Pay

92nd percentile

$0

Higher top officer pay than 92% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

NTEE N • <$500k nonprofits • Source year 2024

Asset Growth

40th percentile

-1.8%

Faster asset growth than 40% of similar nonprofits.

NTEE N • <$500k nonprofits • Annualized from 2023 to 2024

Revenue Growth

29th percentile

-12%

Faster revenue growth than 29% of similar nonprofits.

NTEE N • <$500k nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / AssetsScore unavailable

Assets

Down

$65,238

Down $1,226 (-1.8%) from 2023

Liabilities

-

No earlier filing loaded for comparison.

Net Assets

Down

$65,238

Down $1,226 (-1.8%) from 2023

Operations
Liabilities / RevenueScore unavailableNet Margin27th percentile

Revenue

Down

$34,198

Down $4,716 (-12%) from 2023

Expenses

Down

$35,423

Down $6,147 (-15%) from 2023

Net Income

Up

-$1,225

Up $1,431 (+54%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth40th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$80K$60K$40K$20K$0Assets 2014: $11,170Net Assets 2014: $11,1702014Assets 2015: $16,714Net Assets 2015: $16,7142015Assets 2016: $21,298Net Assets 2016: $21,2982016Assets 2017: $29,992Net Assets 2017: $29,9922017Assets 2018: $28,446Net Assets 2018: $28,4462018Assets 2019: $41,382Net Assets 2019: $41,3822019Assets 2020: $46,618Net Assets 2020: $46,6182020Assets 2021: $52,200Net Assets 2021: $52,2002021Assets 2022: $65,689Net Assets 2022: $65,6892022Assets 2023: $66,464Net Assets 2023: $66,4642023Assets 2024: $65,238Net Assets 2024: $65,2382024

Highlighted filing

2024

Assets$65,238
Liabilities-
Net Assets$65,238
Open 2024 Filing

Operations Trend

Revenue Growth29th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$60K$40K$20K$0-$20KRevenue 2014: $7,620Expenses 2014: $6,511Net Income 2014: $1,1092014Revenue 2015: $15,228Expenses 2015: $12,955Net Income 2015: $2,2732015Revenue 2016: $21,130Expenses 2016: $16,549Net Income 2016: $4,5812016Revenue 2017: $25,100Expenses 2017: $16,407Net Income 2017: $8,6932017Revenue 2018: $12,560Expenses 2018: $16,445Net Income 2018: -$3,8852018Revenue 2019: $33,253Expenses 2019: $20,007Net Income 2019: $13,2462019Revenue 2020: $18,396Expenses 2020: $13,165Net Income 2020: $5,2312020Revenue 2021: $26,790Expenses 2021: $21,209Net Income 2021: $5,5812021Revenue 2022: $36,897Expenses 2022: $23,408Net Income 2022: $13,4892022Revenue 2023: $38,914Expenses 2023: $41,570Net Income 2023: -$2,6562023Revenue 2024: $34,198Expenses 2024: $35,423Net Income 2024: -$1,2252024

Highlighted filing

2024

Revenue$34,198
Expenses$35,423
Net Income-$1,225
Open 2024 Filing

Filings

Most recent year

2024 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$65,238
Liabilities
-
Net assets
$65,238
Revenue
$34,198
Expenses
$35,423
Net income
-$1,225
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$65.2$65.2$34.2$35.4$1.23
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$66.5$66.5$38.9$41.6$2.66
2022Detailed filing. Detailed filing data is available for this year.$65.7$65.7$36.9$23.4$13.5
2021XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$52.2$52.2$26.8$21.2$5.58
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$46.6$46.6$18.4$13.2$5.23
2019XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$41.4$41.4$33.3$20.0$13.2
2018XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$28.4$28.4$12.6$16.4$3.89
2017Detailed filing. Detailed filing data is available for this year.$30.0$30.0$25.1$16.4$8.69
2016XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$21.3$21.3$21.1$16.5$4.58
2015XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$16.7$16.7$15.2$13.0$2.27
2014Detailed filing. Detailed filing data is available for this year.$11.2$11.2$7.62$6.51$1.11
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Aug 27, 2025
Return Version
2024v5.0
Gross Receipts
$34,198
Mission and Program Overview

Mission

To keep people active and healthy by playing tennis

Program Services

DescriptionGrantsExpenses
TO KEEP PEOPLE ACTIVE AND HEALTHY BY PLAYING TENNIS-$35,038
TO KEEP PEOPLE ACTIVE AND HEALTHY BY PLAYING TENNIS--
Compensation and Service Providers
Top Officer Pay92nd percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
MICHAEL KATZTreasurer-$0--
NINA SPORNPresident-$0--
Filing and Contact Details

Filer

Filer Name
Knickerbocker Tennis Foundation
EIN
45-5210489
Phone
9178031599
Address
513 3RD STREET, BROOKLYN, NY 11215-1301

Signing Officer

Name
Nina Sporn
Title
President
Phone
9178031599
Signed
2025-08-27

Preparer

Firm
Diversified Financial Services
Address
122 E 42ND ST STE 1518, NEW YORK, NY 10168
Preparer
Mohammed Ali CPA
Phone
2126878801
Supplemental Narrative

Additional Explanations

Form 990-ez, Part I, Line 16

“Expenses office 1,262 materials & supplies 2,907 junior clinics 1,230 fall fundraiser 258 paypal fees 127 scholarships 26,450 summer camp 2,789 total 35,023”

Form 990-ez, Part III, Line 31

“To keep people active and healthy by playing tennis”

Raw XML Appendix122 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

Path#Value
IRS990EZ/ActivitiesNotPreviouslyRptInd0false
IRS990EZ/BooksInCareOfDetail/PersonNm0MICHAEL KATZ
IRS990EZ/BooksInCareOfDetail/PhoneNum09178031599
IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt0123 7TH AVENUE
IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine2Txt0BOX 142
IRS990EZ/BooksInCareOfDetail/USAddress/CityNm0BROOKLYN
IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd0NY
IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd0112151301
IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt066463
IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt065238
IRS990EZ/ChgMadeToOrgnzngDocNotRptInd0false
IRS990EZ/ContributionsGiftsGrantsEtcAmt034198
IRS990EZ/DonorAdvisedFndsInd0false
IRS990EZ/EngagedInExcessBenefitTransInd0false
IRS990EZ/ExcessOrDeficitForYearAmt0-1225
IRS990EZ/FeesAndOtherPymtToIndCntrctAmt0400
IRS990EZ/FiledScheduleAInd0true
IRS990EZ/ForeignFinancialAccountInd0false
IRS990EZ/ForeignOfficeInd0false
IRS990EZ/Form1120PolFiledInd0false
IRS990EZ/Form990TotalAssetsGrp/BOYAmt066463
IRS990EZ/Form990TotalAssetsGrp/EOYAmt065238
IRS990EZ/GrossReceiptsAmt034198
IRS990EZ/InfoInScheduleOPartIIIInd0X
IRS990EZ/InfoInScheduleOPartIInd0X
IRS990EZ/LobbyingActivitiesInd0false
IRS990EZ/MadeLoansToFromOfficersInd0false
IRS990EZ/MethodOfAccountingCashInd0X
IRS990EZ/NetAssetsOrFundBalancesBOYAmt066463
IRS990EZ/NetAssetsOrFundBalancesEOYAmt065238
IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt066463
IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt065238
IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt0000.00
IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt1000.00
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt00
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt10
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm0MICHAEL KATZ
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm1NINA SPORN
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt0TREASURER
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt1PRESIDENT
IRS990EZ/OperateHospitalInd0false
IRS990EZ/Organization501c3Ind0X
IRS990EZ/OrganizationDissolvedEtcInd0false
IRS990EZ/OrganizationHadUBIInd0false
IRS990EZ/OtherExpensesTotalAmt035023
IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt0NONE
IRS990EZ/PartVIOfCompOfHghstPdEmplTxt0NONE
IRS990EZ/PoliticalCampaignActyInd0false
IRS990EZ/PrimaryExemptPurposeTxt0TO KEEP PEOPLE ACTIVE AND HEALTHY BY PLAYING TENNIS
IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt0TO KEEP PEOPLE ACTIVE AND HEALTHY BY PLAYING TENNIS
IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt1TO KEEP PEOPLE ACTIVE AND HEALTHY BY PLAYING TENNIS
IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt035038
IRS990EZ/ProhibitedTaxShelterTransInd0false
IRS990EZ/RelatedOrganizationCtrlEntInd0false
IRS990EZ/ScheduleBNotRequiredInd0X
IRS990EZ/SchoolOperatingInd0false
IRS990EZ/SubjectToProxyTaxInd0false
IRS990EZ/TanningServicesProvidedInd0false
IRS990EZ/TotalExpensesAmt035423
IRS990EZ/TotalProgramServiceExpensesAmt035038
IRS990EZ/TotalRevenueAmt034198
IRS990EZ/TransactionWithControlEntInd0false
IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd0false
IRS990EZ/TypeOfOrganizationCorpInd0X
IRS990EZ/WebsiteAddressTxt0N/A
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt034198
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt038914
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt036897
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt026790
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt018396
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt0155195
IRS990ScheduleA/InvestmentIncomeCYPct00.00000
IRS990ScheduleA/InvestmentIncomePYPct00.00000
IRS990ScheduleA/PubliclySupportedOrg509a2Ind0X
IRS990ScheduleA/PublicSupportCY509Pct01.00000
IRS990ScheduleA/PublicSupportPY509Pct01.00000
IRS990ScheduleA/PublicSupportTotal509Amt0155195
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind0X
IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt034198
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt038914
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt036897
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt026790
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt018396
IRS990ScheduleA/Total509Grp/TotalAmt0155195
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt034198
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt038914
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt036897
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt026790
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt018396
IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt0155195
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0EXPENSES OFFICE 1,262 MATERIALS & SUPPLIES 2,907 JUNIOR CLINICS 1,230 FALL FUNDRAISER 258 PAYPAL FEES 127 SCHOLARSHIPS 26,450 SUMMER CAMP 2,789 TOTAL 35,023
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1TO KEEP PEOPLE ACTIVE AND HEALTHY BY PLAYING TENNIS
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990-EZ, PART I, LINE 16
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990-EZ, PART III, LINE 31
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0NINA SPORN
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0PRESIDENT
ReturnHeader/BusinessOfficerGrp/PhoneNum09178031599
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-08-27
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0KNICKERBOCKER TENNIS FOUNDATION
ReturnHeader/Filer/BusinessNameControlTxt0KNIC
ReturnHeader/Filer/EIN0455210489
ReturnHeader/Filer/PhoneNum09178031599
ReturnHeader/Filer/USAddress/AddressLine1Txt0513 3RD STREET
ReturnHeader/Filer/USAddress/CityNm0BROOKLYN
ReturnHeader/Filer/USAddress/StateAbbreviationCd0NY
ReturnHeader/Filer/USAddress/ZIPCd0112151301
ReturnHeader/IRSResponsiblePrtyInfoCurrInd0false
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0453170407
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0DIVERSIFIED FINANCIAL SERVICES
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt0122 E 42ND ST STE 1518
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0NEW YORK
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0NY
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd010168
ReturnHeader/PreparerPersonGrp/PhoneNum02126878801
ReturnHeader/PreparerPersonGrp/PreparationDt02025-08-29
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0MOHAMMED ALI CPA
ReturnHeader/ReturnTs02025-09-12T14:42:44-04:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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