Charity Search / HEARTSTONE FOUNDATION
Philanthropy & Grantmaking (T20) 990 on File

HEARTSTONE FOUNDATION

EIN: 20-6197750 · BROOKLINE, MA 02445-5703 · United States · FY 2024 Data
3 out of 5 52 / 100 Based on 2+ years of filings
Financial strength (30%) 95/100
Reliability (20%) 55/100
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
$1.5M
Total Revenue
$1.4M
Total Expenses
$13.9M
Net Assets
N/A
Employees
Revenue Sources
Expense Breakdown
Program Expense Ratio 82.6%
Fundraising Efficiency N/A
Operating Reserve 120.06x
Liability-to-Asset 0.0%
Revenue Diversification 64.3%
Executive Compensation $0
Compared with Peers
FY 2024
Compared with 5,337 similar organizations (United States, Philanthropy & Grantmaking, $1M–$10M 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
82.6% 90.9%
P10P90
Below median
Operating reserve
Months of expenses covered by net assets · higher is better
120.1 mo 80.9 mo
P10P90
Above median
Liabilities to assets
Total liabilities / total assets · lower is better
0.0% 0.0%
P10P90
Top quarter
Revenue concentration
Share of revenue from the largest source · lower is better
64.3% 89.7%
P10P90
Top quarter
Revenue growth
Year over year revenue growth
83.4% 21.6%
P10P90
Expense growth
Year over year expense growth
33.2% 9.6%
P10P90
Surplus margin
Surplus as a share of revenue
9.1% 2.5%
P10P90
Financial History
Year Revenue Expenses Net Assets Program % Staff
2024 $1.5M $1.4M $13.9M 82.6%
2023 $831K $1.0M $13.7M 48.7%
2022 $87K $1.1M $14.0M 91.5%
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Organization Details
EIN
20-6197750
State
MA
City
BROOKLINE
ZIP
02445-5703
Classification
T20
Category
Philanthropy & Grantmaking
Rating
3★
Coverage
A
Last Updated
Aug 2026
Form 990
On File
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