The Tiller Foundation
Nonprofit profile at a glance
- EIN
- 475005677
- IRS 990-EZ coverage
- 2024–2025
- Forms available
- Form 990 2023, Form 990-EZ 2025
- Location
- Pine, AZ, USA
- Phone
- 9284687388
- Rating
- 88
- Verdict
- STRONG
- Rating confidence
- Moderate
- Sector
- Medical Research N.E.C.
Reported finances
- Revenue
- $76,692
- Expenses
- $84,590
- Assets
- $369,371
Source: IRS Form 990-EZ. Selected filing: tax year 2025. Amounts in USD.
Leadership & pay
6 people listed
Executive titles in this filing
- William C Roberts (President)
People named in this filing
- John Gregory Fandel (Secretary & Tre)
- William C Roberts (President)
- Steven Lamer (Director)
Selected names, not a complete roster or a statement of current roles. Open leadership details for the complete filed list.
Source: IRS Form 990-EZ. Selected filing: tax year 2025. Names and roles reflect this filing, not necessarily current officeholders.
Overview
Mission
Scientific research; corporation is organized exclusively for scientific purposesto support development of new science and technologies that help solving today'sproblems and dificulties; creating and selling unimprinted electrical device that enrich human intentions
What it reported doing in 2025
Public support to conduct scientific activities and to create new science and thechnologies that help solve today's problems and dificulties; creating and selling unimprinted electrical device that enrich human intentions
Operating model
- Revenue model
- Cannot be determined from the filing. The filing does not provide enough consistent revenue detail to tell how this nonprofit funds its work.
- Distribution model
- Direct operator. The filing allocates 100% of reported program-service expenses outside its grant, affiliate-payment, and member-benefit lines. This expense classification does not rule out separately announced grant awards.
The verdict
STRONG - A large share of available resources goes toward mission work and the filed numbers largely add up. Revenue has declined or grown slowly and expenses are high relative to revenue.
Rating breakdown
- Financial Efficiency: 100
- Transparency & Controls: 82
- Sustainability: 38
- Growth: 60
Detailed rating inputs
Financial Efficiency
- Mission deployment rate: 100%; rating input score 100
- Program expense ratio: 100%; rating input score 100
Transparency & Controls
- Consistency checks: 100%; rating input score 100; 51st percentile among comparable filings
- Major donor itemization: Limited
Sustainability
- Operating margin: -10.3%; rating input score 29; 29th percentile among comparable filings
- Total-asset coverage ratio: 4.37; rating input score 81; 81st percentile among comparable filings
- Liabilities to assets ratio: Limited
- Officer compensation ratio: 50.6%; rating input score 3; 3rd percentile among comparable filings
Growth
- Program expense growth: 6.4% per year; rating input score 100; 64th percentile among comparable filings
- Revenue growth: -0.8% per year; rating input score 0; 46th percentile among comparable filings
- Asset growth: 7.1% per year; rating input score 100; 63rd percentile among comparable filings
Details
- Where the money goes: 100% of revenue deployed · 100% of spending went to programs
- Governance: Filed governance answers
- Accomplishments: 1 filed program accomplishment · $85K in reported program spending
- Leadership: top reported pay $0 · 6 people listed
- Consistency: 7 of 7 current checks pass
- Schedules: 2 filed schedules
- Filing history: 2 filing years from 2024 to 2025
- Contacts: How to reach this organization
- Money network: 6 filed money-flow records
- Grant readiness: Federal tax and exclusion status, award history, and grant-maker relationships.
- People: Everyone the filings name, and which of them the filings identify by more than a name.
Key Signals
Signals prioritize questions for review. They are not findings of misconduct.
- High — Growth: Revenue growth scored 0/100.
- High — Sustainability: Operating margin scored 29/100.
- High — Sustainability: Officer compensation ratio scored 3/100.