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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 86-0684609

RINCON INSTITUTE

Tax-exempt · TUCSON, AZ 85718

Financials

$50K$19K2022$21K$25K2023$31K$28K2024$14K$18K2025
Revenue Expenses · by fiscal year end
Financials of RINCON INSTITUTE by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2026990-EZ$14,406$17,750-$3,344$35,599$0$35,599
June 30, 2025990-EZ$31,122$28,135$2,987$38,943$0$38,943
June 30, 2024990-EZ$20,556$25,249-$4,693$35,956$0$35,956
June 30, 2023990-EZ$50,045$18,550$31,495$40,649$0$40,649
Financial details: 990-EZ for the year ended June 30, 2026

Revenue

Contributions, gifts and grants
$8,000
Other revenue
$6,406

Expenses

Compensation of officers, directors and key employees
$0
Professional fees and payments to contractors
$13,435
Other expenses
$4,315
Program services (functional)
$16,390

Balance sheet and other

Total assets, start of year
$38,943
Total assets, end of year
$35,599
Total liabilities, end of year
$0
Net assets, end of year
$35,599
Cash, savings and investments
$562
Gross receipts
$14,406

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-EZ for the year ended June 30, 2026, highest compensation first.

NameTitleHours / weekCompensation
Robert TuckerDirector/Chairman1$0
Priscilla StormDirector/Secretary1$0
Jim TressDirector0.25$0
990-EZ for the year ended June 30, 2025: 4 people
NameTitleHours / weekCompensation
Robert TuckerDirector/Chairman1$0
Priscilla StormDirector/Secretary1$0
Henri BissonDirector0.25$0
Jim TressDirector0.25$0
990-EZ for the year ended June 30, 2024: 4 people
NameTitleHours / weekCompensation
Robert TuckerDirector/Chairman1$0
Priscilla StormDirector/Secretary1$0
Henri BissonDirector0.25$0
Jim TressDirector0.25$0
990-EZ for the year ended June 30, 2023: 4 people
NameTitleHours / weekCompensation
Robert TuckerDirector/Chairman1$0
Priscilla StormDirector/Secretary1$0
Henri BissonDirector0.25$0
Jim TressDirector0.25$0

Address and contacts

Address (IRS master file)
2200 E RIVER RD STE 115, TUCSON, AZ 85718-6577
Signed the 990-EZ
Robert Tucker, Chairman
Phone
(520) 577-0200
Return prepared by
Keegan Linscott & Associates PC

Mission

The Rincon Institute works to protect the natural resources of the Rincon Mountain District of the Saguaro National Park, the Rincon Valley and the Cienega Corridor. We carry out research, ecological monitoring, outreach and cooperation with landowners, community education, and wildlife habitat restoration to accomplish this goal.

990-EZ for the year ended June 30, 2026

Program accomplishments

  • Community Engagement
    Expenses $4,255
  • Natural Area Protection
    Expenses $12,135

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026990-EZ on file
2024June 30, 2025November 17, 2025990-EZ on file
2023June 30, 2024November 15, 2024990-EZ on file

File the 2026 990-N for RINCON INSTITUTE

Due November 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
86-0684609
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Supporting organization (509(a)(3))
Donations deductible (Pub 78)
Supporting organization of unknown type
Exempt since
1992
Accounting year ends
June
Files
Form 990-N (e-Postcard)
Category (NTEE)
Environment (C013)
Assets (IRS master file)
$35,599
Income (IRS master file)
$14,406

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZJune 2026$14,406$17,750$35,599XML
990-TJune 2026–––IRS
990-EZJune 2025$31,122$28,135$38,943IRS
990-TJune 2025–––IRS
990-EZJune 2024$20,556$25,249$35,956XML
990-TJune 2024–––IRS
990-EZJune 2023$50,045$18,550$40,649XML
990-TJune 2023–––IRS
990-EZJune 2022–––IRS
990-TJune 2022–––IRS
990June 2021–––IRS
990-TJune 2021–––IRS
990June 2020–––IRS
990June 2019–––IRS
990June 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 86-0684609).

Questions about RINCON INSTITUTE

What is the EIN of RINCON INSTITUTE?
The employer identification number (EIN) of RINCON INSTITUTE is 86-0684609.
Is RINCON INSTITUTE tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1992.
Are donations to RINCON INSTITUTE tax-deductible?
Yes. It is listed in IRS Publication 78 (Supporting organization of unknown type).
Which annual return does RINCON INSTITUTE file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of RINCON INSTITUTE due?
The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did RINCON INSTITUTE last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended June 2026.
Who are the officers and directors of RINCON INSTITUTE?
The 990-EZ for the year ended June 30, 2026 lists 3 people; 0 received compensation from the organization.
How much revenue does RINCON INSTITUTE have?
On its 990-EZ for the year ended June 30, 2026 it reported revenue of $14,406, expenses of $17,750 and total assets of $35,599 at year end.

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