New York · Nonprofit
CARBON TAX CENTER
CARBON TAX CENTER (New York) receives grants from 8 organizations whose IRS filings report $251,880 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($151,175). 3 of them have funded it in more than one year, and 78% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $7k
- Funders on record
- 8
- Grants received
- $252k
- Net assets
- $3k
What Carbon Tax Center does
Mission
The Carbon Tax Center promotes education, research, and understanding about the climate and environmental benfits of carbon taxes for the United States
As stated on its FY2025 Form 990-EZ.
Program
The Carbon Tax Center promotes education, research and understanding about the climate and environmental benefits of carbon taxes for the United States
$29,500 spent100% of program spending
The program described on its FY2025 Form 990-EZ. Program spending in total: $29,500.
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 at each year end, in dollars. The largest one-year move in total assets was 2018 to 2019, from $70k to $211k (+203%).
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.
100% of CARBON TAX CENTER’s revenue is contributions — more reliant on donations than three-quarters of its peers (65% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 7 of the last 9 reported years ran a deficit.
Leadership and staff
Chief executive
Charles Komanoff
President & CEO
As listed on its FY2025 Form 990-EZ.
Who funds it, year by year
2017 → 2023: the base held at 2 funders, grant income fell $64k → $15k.
4 of 8 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 78% 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 CARBON TAX CENTER’s funders (the co-funder graph). 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
CARBON TAX CENTER leans on a few funders — its largest provides 60% of grant income and the top three 87%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
78% 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 CARBON TAX CENTER.
Largest funder’s share by year: 2017 84% · 2019 54% · 2020 46% · 2021 98% · 2022 100% · 2023 100% — growing more concentrated.
“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
33% of CARBON TAX CENTER's funders are still giving 3 years after their first grant; 38% 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
78% of CARBON TAX CENTER's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $57k that is directly attributable, 99% of it comes from funders outside New York, across 4 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $195k arriving through sponsors registered in 4 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
CARBON TAX CENTER's revenue fell 92% between 2017 and 2025.
this organization peer median middle 50% of peers· 17,277 education nonprofits under $100k, FY2025
Organizations like CARBON TAX CENTER
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 York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
100%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for CARBON TAX CENTER: 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 CARBON TAX CENTER?
- CARBON TAX CENTER (New York) receives grants from 8 organizations whose IRS filings report $251,880 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($151,175). 3 of them have funded it in more than one year, and 78% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does CARBON TAX CENTER have?
- IRS filings report 8 organizations giving $251,880 in grants to CARBON TAX CENTER, 3 of which have funded it in more than one year.
- Who is the largest funder of CARBON TAX CENTER?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $151,175 in grants. The full list of funders is on this page.
- How can an organization like CARBON TAX CENTER find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. 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 Carbon Tax Center →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 8 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