Do You Need an Arborist License in Alaska?

Last updated: August 25, 2026

Alaska issues no arborist license, so cutting and removing trees needs no state credential. Treatment does: anyone applying pesticides to property other than their own — or acting as a pesticide consultant — must be certified by DEC. The exam structure is the demanding part: all three sections of the Core Exam at 70% or higher, in one sitting, plus a category exam. And certification is not finished until proof of liability insurance reaches the Department.

What Alaska Actually Requires

• No arborist license — Alaska issues none; no exam or background check for tree work itself; ISA certification is voluntary.
• DEC pesticide applicator certification for applicators who apply pesticides to property other than their own, or who act as a pesticide consultant.
• ★ All three sections of the Core Exam at 70% or higher, in one sitting.
• At least one Category Exam passed at 70% or higher — DEC’s example of the relevant category is a tree care company that injects trees to control aphids.
• A $25 DEC fee, invoiced after you pass.
• ★ Proof of liability insurance submitted to DEC before certification is complete.
• An Alaska business license — Alaska is one of the few states requiring a general state business license on top of registering the entity.

What It Costs

Item	Cost	Notes
State arborist license	Does not exist	Cutting and removal need no Alaska credential
DEC certification fee	$25	Invoiced after you pass the exams
Core Exam	See DEC schedule	Three sections, 70% each, one sitting
Category Exam	See DEC schedule	At least one, at 70% or higher
Liability insurance	Proof required	Submitted to DEC — certification is not complete without it
Alaska business license	See CBPL schedule	A general state business license, separate from the entity filing
Alaska LLC	$250	Articles of organization — the highest formation fee in this guide

Three Core Sections in One Sitting — and Advice Counts as Application

Alaska’s tree rules are short: there is no arborist license. What is worth knowing is how the pesticide certification is structured, because two details make it stricter than the fee suggests.

First, consulting is inside the requirement. Certification is required of applicators who apply pesticides to property other than their own or act as a pesticide consultant. That puts Alaska with Oklahoma, Virginia, Louisiana and Mississippi in regulating advice as well as application. A consulting arborist who inspects a declining birch and recommends a treatment for a fee is inside it, even if a different company does the injecting.

Second, the Core Exam must be passed whole. You must pass all three sections with a score of 70% or higher in one sitting. Most states let you bank a passed component and retake the one you failed; Alaska does not describe it that way. That changes how you prepare — you cannot revise one section at a time and pick up the rest later, so the whole body of material has to be ready on the same day. On top of that comes at least one Category Exam, also at 70%.

DEC’s own illustration of the relevant category is worth quoting because it removes any doubt about whether tree work is covered: a tree care company that injects trees to control aphids. If that is your business, this is your category.

Third, the certification is not finished when you pass. DEC emails an invoice for the $25 fee and a reminder to submit proof of liability insurance. The cover is part of becoming certified, not a separate commercial decision made afterwards. The fee is trivial; the insurance is the substantive condition, which is the same pattern as Iowa, Georgia and South Carolina.

One thing that has nothing to do with trees but everything to do with starting here. Alaska requires a general state business license in addition to registering your entity — one of only a handful of states that do — and the LLC filing fee is $250, the highest in this guide. Neither is difficult, but both are easy to miss when you are budgeting from a checklist written for somewhere else.

How to Get Licensed, In Order

1. Stop looking for an arborist license — Alaska issues none.
2. Decide whether you will apply pesticides or advise on them for a fee; both trigger certification.
3. Prepare all three Core sections together, because they must be passed at 70% in one sitting.
4. Sit at least one Category Exam covering ornamental and landscape work.
5. Arrange liability cover before you finish — DEC requires proof submitted as part of certification.
6. Pay the $25 DEC fee when invoiced.
7. Get the Alaska business license as well as registering the entity.
8. Budget $250 for the LLC filing, which is higher than most states.

Staying Licensed

What you maintain in Alaska is the DEC certification and the proof of liability insurance that supports it — because the cover was a condition of certifying, a change of carrier is worth notifying rather than filing away. Recertification runs on DEC’s cycle, so confirm the interval when you are certified rather than assuming an annual renewal. Your Alaska business license is a separate renewal from the entity registration and from the DEC certification, which means three unrelated dates to keep. If your work expands into another category, that is an additional Category Exam at 70% rather than an amendment.

Frequently Asked Questions

Does Alaska require an arborist license?

No. Alaska issues no arborist license and has no arborist board, so cutting, pruning and removing trees needs no state credential, exam or background check. ISA certification is voluntary. What is regulated is pesticide application, by the Department of Environmental Conservation.

Who needs pesticide certification in Alaska?

Applicators who apply pesticides to property other than their own, or who act as a pesticide consultant, must obtain certification from the DEC Pesticide Program. Note that consulting is named alongside applying — advising for compensation is inside the requirement even if someone else does the work. DEC’s own example of the category is a tree care company that injects trees to control aphids.

How hard is the Alaska certification exam?

The structure is the demanding part. You must pass all three sections of the Core Exam with a score of 70% or higher in one sitting, and pass at least one Category Exam at 70% or higher. Failing one section means resitting rather than carrying a partial pass forward, so preparation has to cover all three areas at once.

Does Alaska require insurance for pesticide applicators?

Yes. After you pass the exams, DEC invoices the $25 fee and requires proof of liability insurance to be submitted. So certification is not complete on the exam result alone — the cover has to be filed with the Department before you are certified.

Tree work sits alongside our full guide to starting a landscaping business in Alaska, and the wider guide to starting a business in Alaska. Or see how every state handles tree work in our arborist license requirements by state guide.

Sources

Source	What It Covers
Alaska DEC — becoming a certified applicator	That certification is required of applicators applying pesticides to property other than their own or acting as a pesticide consultant, the requirement to pass all three Core Exam sections at 70% in one sitting plus a category exam, the $25 DEC fee, and the proof of liability insurance requirement
Alaska DEC — applicator categories	The category covering outdoor landscape and lawn pests, with a tree care company injecting trees to control aphids given as the example
Alaska DEC — pesticide control program	The pesticide program administering certification
Alaska Division of Corporations, Business and Professional Licensing	The $250 articles of organization fee and the separate Alaska business license