Is William And Flora Hewlett Foundation a Trustworthy Charity?
Independent charity trust assessment · Updated April 12, 2026
48
Donor Caution Advised
Significant transparency concerns — conduct thorough research before donating
D
William And Flora Hewlett Foundation is a nonprofit organization with a Nerq Trust Score of 48.2/100 (D). Donor recommendation: Proceed with Caution. Education, environment, global development. $12B+ endowment.
Overall assessment: William And Flora Hewlett Foundation is not recommended for donors without further due diligence.
Trust Score Breakdown
Financial Transparency (30%)65/100 Program Effectiveness (25%)49/100 Accountability (10%)59/100
Key Findings
⚠Financial Transparency: 65/100 — Good
⚠Program Effectiveness: 49/100 — Fair
⚠Governance: 44/100 — Fair
⚠Donor Trust: 49/100 — Fair
⚠Accountability: 59/100 — Fair
How does William And Flora Hewlett Foundation spend its money?
Financial Transparency score: 65/100 (Good).
Estimated program expense ratio: 52%.
A significant portion of funds may go to administration and fundraising.
Financial estimates derived from Nerq analysis. Verify with the charity's public filings (IRS Form 990) for exact figures.
How is William And Flora Hewlett Foundation governed?
Governance score: 44/100 (Fair).
Accountability score: 59/100 (Fair).
Governance practices raise concerns — donors should verify board independence and audit history.
Accountability measures are present but could be strengthened.
Frequently Asked Questions
Is William And Flora Hewlett Foundation a trustworthy charity?
William And Flora Hewlett Foundation has a Nerq Trust Score of 48.2/100 (D). Proceed with Caution. Conduct thorough research before donating.
How does William And Flora Hewlett Foundation spend donations?
Estimated program expense ratio: 52%. Financial Transparency score: 65/100. Review the latest Form 990 for detailed spending breakdown.
Is my donation to William And Flora Hewlett Foundation tax-deductible?
Check William And Flora Hewlett Foundation's IRS tax-exempt status on the IRS Tax Exempt Organization Search tool. Most registered 501(c)(3) nonprofits offer tax-deductible donations. Verify directly with the organization.
Does William And Flora Hewlett Foundation publish annual reports?
Transparency score: 65/100. Check the organization website or GuideStar/Candid for available reports.
How effective is William And Flora Hewlett Foundation at achieving its mission?
Program Effectiveness score: 49/100 (Fair). Limited evidence of program effectiveness — request impact data directly.
Who oversees William And Flora Hewlett Foundation?
Governance score: 44/100. Governance information is limited — review IRS Form 990 for board details.
How does William And Flora Hewlett Foundation compare to similar charities?
William And Flora Hewlett Foundation has an overall trust score of 48.2/100. Compare with similar nonprofits below or browse the full charity index to find top-rated organizations in the same cause area.
How we calculated this score
William And Flora Hewlett Foundation's trust score of 48.2/100 (D) is based on analysis of public financial filings, governance disclosures, program outcomes, and donor feedback signals. The score reflects 5 charity-specific dimensions: Financial Transparency (65/100, 30%), Program Effectiveness (49/100, 25%), Governance (44/100, 20%), Donor Trust (49/100, 15%), and Accountability (59/100, 10%).
Nerq indexes over 7.5 million entities across 26 registries, enabling direct cross-organization comparison. Scores are updated as new data becomes available.
Full methodology documentation · Machine-readable data (JSON API)
Last updated: April 12, 2026 · Data sources: IRS Form 990, GuideStar, Charity Navigator, public filings