Question 1

Is Tree-Ring Society a tax-exempt 501(c)(3)?

Accepted Answer

Yes — Tree-Ring Society is recognised by the IRS as a 501(c)(3) organisation (EIN 81-1389847). The IRS recognised Tree-Ring Society as tax-exempt in February 2016.

Question 2

What is Tree-Ring Society's EIN?

Accepted Answer

Tree-Ring Society's Employer Identification Number (EIN) is 81-1389847. The EIN was assigned by the IRS in February 2016. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.

Question 3

What does Tree-Ring Society do?

Accepted Answer

The Tree-Ring Society's purpose is to promote and support the science of Dendrochronology

Question 4

Where is Tree-Ring Society located?

Accepted Answer

Tree-Ring Society is located at 3021 Zodiac Court, Loveland, CO, 80537.

Question 5

When was Tree-Ring Society founded or recognised by the IRS?

Accepted Answer

Tree-Ring Society was recognised by the IRS as a tax-exempt organisation in February 2016. The IRS ruling date is the earliest authoritative date available for most US nonprofits.

Question 6

What is Tree-Ring Society's annual revenue?

Accepted Answer

On its most recent Form 990 (fiscal year 2025), Tree-Ring Society reported $78K in total revenue and $58K in total expenses.

Question 7

Has Tree-Ring Society been auto-revoked by the IRS?

Accepted Answer

No — Tree-Ring Society (EIN 81-1389847) does not appear on the IRS Auto-Revocation List. Givalgo Discover cross-references the IRS Auto-Revocation List on every profile load; if status changes, this page reflects it.

Question 8

Is Tree-Ring Society listed in IRS Publication 78?

Accepted Answer

Yes — Tree-Ring Society is listed in IRS Publication 78 as an organisation eligible to receive tax-deductible charitable contributions. Pub 78 status is the canonical IRS signal that donations to an org are deductible.

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Tree-Ring Society

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