Morton Arboretum
4100 Illinois Route 53, Lisle, IL · IRS data through FY2024
Revenue, expenses and net assets
Revenue Expenses Net assets
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| FY2024 | $57,793,716 | $58,286,620 | $310,222,157 |
| FY2023 | $45,149,282 | $52,201,196 | $297,536,894 |
| FY2022 | $53,650,331 | $47,787,763 | $280,785,934 |
| FY2021 | $64,971,405 | $40,941,761 | $316,483,560 |
| FY2020 | $28,928,117 | $35,709,406 | $261,490,776 |
| FY2019 | $28,464,414 | $39,708,822 | $252,750,023 |
| FY2018 | $55,465,982 | $38,744,591 | $233,000,558 |
| FY2017 | $45,756,008 | $37,286,192 | $249,027,602 |
| FY2016 | $18,142,764 | $34,397,968 | $232,744,675 |
| FY2015 | $31,789,482 | $32,952,740 | $225,600,435 |
| FY2014 | $54,327,903 | $31,725,140 | $242,292,485 |
| FY2013 | $32,109,978 | $27,186,843 | $244,435,012 |
| FY2012 | $29,466,987 | $27,451,381 | $232,339,040 |
| FY2011 | $37,159,932 | $25,621,362 | $220,696,875 |
Form 990 filings
The returns filed by Morton Arboretum (EIN 36-1505770), including Form 990 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 | $19,759,730 | 34% |
| Program service revenue | $10,584,870 | 18% |
| Other revenue | $27,449,116 | 47% |
Where the money was spent
| Category | Amount | % of expenses |
|---|---|---|
| Program services | $48,114,237 | 83% |
| Management & general | $6,188,994 | 11% |
| Fundraising | $3,983,389 | 7% |
What the numbers show
- Other revenue made up 47% of total revenue in FY2024.
- Program services accounted for 83% of functional expenses, management & general 11%, and fundraising 7%.
- 83% of functional expenses went to program services in FY2024. That is higher than 50.6% of 334 Environment organizations nationwide (too few in IL for a state comparison).
- Net assets covered about 63.9 months of expenses at the end of the reporting year. That puts it in the 69th percentile among 191 Environment organizations in IL.
- Total revenue was the highest among 201 Environment organizations in IL.
- Total revenue rose from $37,159,932 in FY2011 to $57,793,716 in FY2024. Revenue increased in 7 and decreased in 6 of 13 year-over-year comparisons.
- Expenses exceeded revenue in 6 of 14 reported years (FY2015, FY2016, FY2019, FY2020, FY2023, FY2024).
- The highest revenue on record here is $64,971,405 in FY2021.
- Net assets grew from $220,696,875 to $310,222,157 between FY2011 and FY2024.
- Contributions and grants made up 16% of revenue in FY2011 and 34% in FY2024.
- Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity).
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.
About this organization
COLLECT, STUDY, DISPLAY AND GROW TREES; TO ENCOURAGE THE PLANTING AND CONSERVATION OF TREES.
IRS status
| Ruling year | 1925 |
| Subsection | 501(c)(3) |
| Classification | Public charity |
| Program area (NTEE) | C410 — Environment |
| Donations | Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity). |
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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.
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