New Jersey · Nonprofit
BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC
BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC (New Jersey) receives grants from 28 organizations whose IRS filings report $1,078,843 to it, the largest being Princeton Area Community Foundation Inc ($443,915). 15 of them have funded it in more than one year.
- Revenue FY2024
- $740k
- Funders on record
- 28
- Grants received
- $1.1M
- Net assets
- $762k
What Big Brothers Big Sisters of Mercer County Inc does
Mission
The mission of Big Brothers Big Sisters of Mercer County is to create and support one-to-one mentoring relationships that ignite the power and promise of youth. We pursue our mission by matching under-resourced and undeserved youth in Mercer County, ages 6-18, with caring adult mentors who provide emotional and intellectual support while helping youth navigate whatever challenges they may face.
As stated on its FY2024 Form 990.
Program
BBBS - Mercer provided mentors to 300 vulnerable youths in 2025. The Three Basic types of programs are: Community based - involves volunteers (Bigs) who provide opportunities for youths (Littles) to enjoy the companionship of caring adult outside of the home and school in various cultural, educational and recreational types of activities; school based - involves volunteers who provide Littles with one on one time and attention in their school setting, typically for at least one hour per week during the academic year; Workplace Mentoring - involves volunteers who provide one on one mentoring at the workplace twice monthly where littles learn about the business, careers, and educational requirements. STEM educational activities are also part of the curriculum.
$510,052 spent100% of program spending
The program described on its FY2025 Form 990. Program spending in total: $510,052.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2020 to 2021, from $678k to $904k (+33%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2017 11% · 2018 11% · 2019 9% · 2020 24% · 2021 32% · 2022 19% · 2023 24% · 2024 20%. Grants only. Government contracts and fees sit inside program revenue.
78% of BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC’s revenue is contributions — about as donation-reliant as the typical peer (83% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 8 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Stephanie Karpowicz
Executive Director
As listed on its FY2025 Form 990.
The chief executive listed changed between the FY2022 and FY2023 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 7 funders to 14 funders, grant income fell $153k → $114k.
7 of 28 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 50% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC’s funders (the co-funder graph). Top 27 of 28 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC leans on a few funders — its largest provides 41% of grant income and the top three 63%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
84% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC.
Largest funder’s share by year: 2017 65% · 2018 57% · 2019 63% · 2020 43% · 2021 62% · 2022 47% · 2023 44% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
46% of BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC's funders are still giving 3 years after their first grant; 54% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
59% of BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC's grant income comes from New Jersey funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $538k arriving through sponsors registered in 6 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC is better cushioned than half of the 5,688 youth development nonprofits its size.
this organization peer median middle 50% of peers· 5,688 youth development nonprofits $100k–$1M, FY2024
Organizations like BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In New Jersey
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
67% of spending goes to programs.
Governance
Public support
90%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC?
- BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC (New Jersey) receives grants from 28 organizations whose IRS filings report $1,078,843 to it, the largest being Princeton Area Community Foundation Inc ($443,915). 15 of them have funded it in more than one year.
- How many funders does BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC have?
- IRS filings report 28 organizations giving $1,078,843 in grants to BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC, 15 of which have funded it in more than one year.
- Who is the largest funder of BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC?
- Princeton Area Community Foundation Inc is the largest funder on record, with $443,915 in grants. The full list of funders is on this page.
- How can an organization like BIG BROTHERS BIG SISTERS OF MERCER COUNTY INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New Jersey. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Big Brothers Big Sisters of Mercer County →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 28 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing