Environment (C40) IRS Verified DX Registered 990 on File

TRANSITION ZONE HORTICULTURAL INSTITUTE INC

EIN: 94-2788812 · FLAGSTAFF, AZ 86005-8775 · United States · FY 2023 Data

3 out of 5 50 / 100 Based on 2+ years of filings

Financial strength (30%) 71/100

Reliability (20%) 55/100

Effectiveness (25%) 70/100

Impact (25%) No data yet

Financial data: FY 2023 · Scored 9/13/2026

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Mission Statement

To increase the understanding, appreciation, and conservation of plants and plant communities native to the Colorado Plateau. Identify, evaluate, display, and introduce plants adapted to the climatic and soil conditions of the Flagstaff environment.

Financial Overview — FY 2023

$855K

Total Revenue

$735K

Total Expenses

$2.5M

Net Assets

Employees

Revenue Sources

Expense Breakdown

Program Expense Ratio 62.3%

Fundraising Efficiency 135.0%

Operating Reserve 40.97x

Liability-to-Asset 6.5%

Revenue Diversification 41.3%

Executive Compensation $81K

Compared with Peers

FY 2023

Compared with 3,997 similar organizations (United States, Environment, $100K–$1M in expenses), FY 2023.

This organization Middle half of peers (P25–P75) Peer median

Ratio	This org	Peer median	Position (P10 → P90)
Program expense ratio Program expenses / total expenses · higher is better	62.3%	82.6%	P10P90	Bottom quarter
Admin expense ratio Management and general / total expenses · lower is better	29.5%	13.1%	P10P90	Bottom quarter
Fundraising expense ratio Fundraising expenses / total expenses · lower is better	8.2%	0.4%	P10P90	Bottom quarter
Fundraising efficiency Fundraising expenses / gross fundraising income · lower is better	135.0%	50.7%	P10P90	Below median
Operating reserve Months of expenses covered by net assets · higher is better	41.0 mo	13.4 mo	P10P90	Above median
Liabilities to assets Total liabilities / total assets · lower is better	6.5%	1.2%	P10P90	Below median
Revenue concentration Share of revenue from the largest source · lower is better	41.3%	92.8%	P10P90	Top quarter
Revenue growth Year over year revenue growth	28.4%	9.0%	P10P90
Expense growth Year over year expense growth	-24.8%	14.5%	P10P90
Surplus margin Surplus as a share of revenue	14.0%	4.0%	P10P90

Financial History

Year	Revenue	Expenses	Net Assets	Program %	Staff
2023	$855K	$735K	$2.5M	62.3%	25
2022	$666K	$977K	$2.3M	64.6%	24
2021	$1.2M	$719K	N/A	—	24

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Organization Details

EIN: 94-2788812
State: AZ
City: FLAGSTAFF
ZIP: 86005-8775
Classification: C40
Category: Environment
Rating: 3★
Coverage: A
Last Updated: Aug 2026
IRS Ruling Year: 1981
Foundation Code: 15
Form 990: On File

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CharityAI™ rates charities from 0 to 100 using public filings (IRS Form 990 and the equivalent registries outside the US) together with the information the charity itself provides on DonationX. Ratings are recalculated every quarter, without human bias, and shown as stars.

Four pillars

Financial strength30%

Program expense ratio, fundraising efficiency, operating reserves, liabilities and revenue diversification, compared with similar organizations.

Reliability20%

Standing with the registry, filing history, verification and how complete the profile is.

Effectiveness25%

How much goes to programs and how consistently the organization delivers them.

Impact25%

The outcomes the charity reports on DonationX: people served, cost per service and results.

Stars

★★★★★ 80–100 ★★★★☆ 60–79 ★★★☆☆ 40–59 ★★☆☆☆ 20–39 ★☆☆☆☆ 1–19

A pillar with no data counts as zero. Without impact metrics the score is capped at 59 (three stars): only the charity can supply that data.
The coverage grade (A to D) says how much filing data the score rests on; NONE means there is not enough to rate.
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