Charity Search / OLD STONE MILL FOUNDATION TRUST
Environment (C32) 990 on File

OLD STONE MILL FOUNDATION TRUST

EIN: 81-3365000 · COLCHESTER, CT 06415-2027 · United States · FY 2024 Data
3 out of 5 43 / 100 Based on 2+ years of filings
Financial strength (30%) 70/100
Reliability (20%) 45/100
Effectiveness (25%) 51/100
Impact (25%) No data yet
Financial data: FY 2024 · Scored 9/13/2026
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Financial Overview — FY 2024
$838K
Total Revenue
$86K
Total Expenses
$2.1M
Net Assets
N/A
Employees
Revenue Sources
Expense Breakdown
Program Expense Ratio 95.9%
Fundraising Efficiency N/A
Operating Reserve 287.10x
Liability-to-Asset 35.4%
Revenue Diversification 80.1%
Compared with Peers
FY 2024
Compared with 2,616 similar organizations (United States, Environment, under $100K in expenses), FY 2024.
This organization Middle half of peers (P25–P75) Peer median
Ratio This org Peer median Position (P10 → P90)
Program expense ratio
Program expenses / total expenses · higher is better
95.9% 81.5%
P10P90
Above median
Operating reserve
Months of expenses covered by net assets · higher is better
287.1 mo 36.7 mo
P10P90
Top quarter
Liabilities to assets
Total liabilities / total assets · lower is better
35.4% 0.0%
P10P90
Bottom quarter
Revenue concentration
Share of revenue from the largest source · lower is better
80.1% 95.1%
P10P90
Above median
Revenue growth
Year over year revenue growth
816.8% 2.5%
P10P90
Expense growth
Year over year expense growth
8.2% -0.2%
P10P90
Surplus margin
Surplus as a share of revenue
89.8% 17.9%
P10P90
Financial History
Year Revenue Expenses Net Assets Program % Staff
2024 $838K $86K $2.1M 95.9%
2023 $91K $79K $1.3M 95.7%
2022 $735K $81K $1.3M 95.8%
2021 $210K $64K $867K 94.7%
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Organization Details
EIN
81-3365000
State
CT
City
COLCHESTER
ZIP
06415-2027
Classification
C32
Category
Environment
Rating
3★
Coverage
A
Last Updated
Aug 2026
Form 990
On File
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