Tandem Philanthropies
3558 Round Barn Blvd Ste 300, Santa Rosa, CA · IRS data through FY2023
Revenue, expenses and net assets
Revenue Expenses Net assets
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| FY2023 | $47,099,817 | $3,248,283 | $68,741,470 |
| FY2022 | $4,858,810 | $1,234,371 | $32,930,878 |
| FY2021 | $39,564,064 | $1,588,526 | $32,913,045 |
| FY2020 | $1,291,700 | $1,109,303 | $21,621,531 |
| FY2019 | $680,202 | $701,412 | $22,030,552 |
Form 990 filings
The returns filed by Tandem Philanthropies (EIN 38-4055324), including Form 990-PF PDFs and e-file data by year, are available in ProPublica's Nonprofit Explorer. The figures on this page come from IRS data files built from those returns.
Where the revenue came from
| Source | Amount | % of revenue |
|---|---|---|
| Contributions & grants | $10,831,731 | 23% |
| Other revenue | $36,268,086 | 77% |
Grants paid
Total contributions, gifts and grants paid by year, as reported on Form 990-PF. Individual recipients are not published. See private foundations in CA. See the largest grantmakers.
| Tax year | Grants paid |
|---|---|
| FY2023 | $2,750,800 |
| FY2022 | $1,150,000 |
| FY2021 | $1,500,000 |
| FY2020 | $1,080,000 |
| FY2019 | $205,000 |
What the numbers show
- Other revenue made up 77% of total revenue in FY2023.
- Net assets covered about 253.9 months of expenses at the end of the reporting year. That puts it in the 84th percentile among 6903 Philanthropy, Voluntarism & Grantmaking Foundations organizations in CA.
- Total revenue was higher than 98.9% of 7106 Philanthropy, Voluntarism & Grantmaking Foundations organizations in CA.
- Total revenue rose from $680,202 in FY2019 to $47,099,817 in FY2023. Revenue increased in 3 and decreased in 1 of 4 year-over-year comparisons.
- Expenses exceeded revenue in 1 of 5 reported years (FY2019).
- Net assets grew from $22,030,552 to $68,741,470 between FY2019 and FY2023.
- Contributions and grants made up 2% of revenue in FY2019 and 23% in FY2023.
- Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (private foundation).
Figures compared against other organizations of the same NTEE program area in the same state. See the methodology page for how these are calculated and the guide to reading nonprofit financials for their limits.
IRS status
| Ruling year | 2018 |
| Subsection | 501(c)(3) |
| Classification | Private foundation |
| Program area (NTEE) | T20 — Philanthropy, Voluntarism & Grantmaking Foundations (in CA) |
| Donations | Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (private foundation). |
Similar organizations
- Community Foundation Santa Cruz County — Aptos, CA · $46,923,526
- Sacramento Region Community Foundation — Sacramento, CA · $46,788,100
- Kalliopeia Foundation — Inverness, CA · $46,125,271
- California Health Foundation and Trust — Sacramento, CA · $45,957,239
- The 1440 Foundation — Saratoga, CA · $48,735,953
- United Way Inc — Los Angeles, CA · $50,225,007
- Intuitive Foundation — Sunnyvale, CA · $42,652,947
- Weingart Foundation — Los Angeles, CA · $42,452,186
Source: Internal Revenue Service — Exempt Organizations Business Master File (downloaded November 4, 2026), Statistics of Income extracts, Form 990 e-file data, Publication 78 and the Automatic Revocation list. Figures are as reported by the organization; IRS processing may adjust them. This is not a charity rating and not tax advice. Confirm deductibility in IRS Tax Exempt Organization Search.
Think something here is wrong or should be removed? Use the contact form — we act on removal requests within 30 days.