Do You Need an Arborist License in Indiana?

Last updated: August 24, 2026

Indiana issues no arborist license, so tree cutting and removal need nothing from the state. Pesticide work is regulated by the Office of Indiana State Chemist — based at Purdue, not a conventional agriculture department. The structure is two-part and priced per person: a pesticide business license for any firm that applies or offers to apply pesticide for hire, with a certificate of insurance for that location, and a for-hire applicator license for each individual who applies or supervises on the business’s behalf.

What Indiana Actually Requires

• No arborist license — Indiana issues none; no exam, no background check; ISA certification is voluntary.
• ★ A pesticide business license for any firm that applies or offers to apply pesticide for hire. Offering counts — advertising treatment triggers it.
• ★ A certificate of insurance for that location, included with the business license application.
• Fees for at least one certified applicator for hire working at that location, submitted with the business license.
• A for-hire pesticide applicator license for any person who applies or supervises the application of any pesticide on behalf of a licensed pesticide business.
• The appropriate applicator certification exams passed for the type of applications to be made.
• $45 a year for the business, and $45 for each certified applicator and registered technician.
• The ornamental category for trees and shrubs; turf management is a separate category.

What It Costs

Item	Cost	Notes
State arborist license	Does not exist	Nothing to sit, pay or wait for on the cutting side
Pesticide business license	$45 / year	Per firm applying or offering to apply for hire
Each certified applicator	$45 / year	And $45 for each registered technician — the cost scales with headcount
Certificate of insurance	Required per location	Submitted with the business license for that location
Certification exams	Per OISC schedule	Appropriate to the type of applications being made
Indiana LLC	$95	Articles of organization filed through INBiz

Regulated by a University Chemist — and the Insurance Is Per Location

Two things make Indiana worth reading carefully, and neither is about trees.

First, the regulator is not where you would look for it. Pesticide licensing runs through the Office of Indiana State Chemist, based at Purdue University. Most states put this inside a department of agriculture; Indiana houses it in a university office. Practically, that means the forms, the exam scheduling and the guidance all live at oisc.purdue.edu rather than on a state agency site, and searching “Indiana department of agriculture pesticide license” will send you in circles. South Carolina does the same thing through Clemson.

Second, the trigger is the offer, and the insurance is per location. A pesticide business license is required of any firm that applies or offers to apply pesticide for hire. As in Ohio, Tennessee and Connecticut, advertising the service is enough — the requirement lands when you offer treatment, not when you first spray. And the application must include a certificate of insurance for that location. Read that location literally: the license and its insurance attach to the place, so a second branch is a second license with its own certificate rather than an amendment to the first.

The pricing follows people rather than the company. Annual fees are $45 for the business and $45 for each certified applicator and registered technician. That is cheap per head, but it scales: a business with an owner-applicator and three technicians pays five times $45, not one. It also means every hire who will apply pesticide is a licensing cost and a licensing action, not just a payroll entry. The business license application itself has to include fees for at least one certified applicator for hire working at that location — so you cannot license the company and staff it later.

The individual credential is separate from the company one. A for-hire pesticide applicator license is required of any person who applies or supervises the application of any pesticide on behalf of a licensed pesticide business, and they must have passed the appropriate certification exams for the type of applications to be made. Supervising counts, so a crew lead who never holds the wand still needs the credential if they direct the work.

How to Get Licensed, In Order

1. Decide whether you will apply pesticides at all — and remember that offering to apply already triggers the business license.
2. Go to OISC at Purdue, not a state agriculture department, for forms and exams.
3. Get at least one person certified in the category covering ornamental trees and shrubs.
4. Obtain a certificate of insurance for the location the business license will cover.
5. File the business license application with the certificate and fees for at least one certified applicator at that location.
6. License each individual who will apply or supervise — $45 each, annually.
7. Treat a second branch as a second license, with its own certificate of insurance.
8. Register the business entity through INBiz — $95.

Staying Licensed

Indiana’s costs are annual and headcount-driven: $45 for the business and $45 for each certified applicator and registered technician, so the renewal bill moves with your crew. The certificate of insurance is tied to the location on the business license, which means both a change of carrier and a change of premises are licensing events rather than private ones. Every new hire who will apply or supervise applications needs their own for-hire applicator license and the right certification before they start, not after. Certification is by category, so adding a service that falls outside ornamental work means another exam rather than an amendment.

Frequently Asked Questions

Does Indiana require an arborist license?

No. Indiana issues no arborist license and has no arborist board. Cutting, pruning and removing trees needs no state credential, no exam and no background check, and ISA certification is voluntary. What is regulated is pesticide use, by the Office of Indiana State Chemist.

Who regulates pesticide use in Indiana?

The Office of Indiana State Chemist, known as OISC, which is based at Purdue University rather than at a conventional state department of agriculture. That is unusual — most states run pesticide licensing through their agriculture department — but the licensing obligations are no lighter for it.

Do I need a pesticide business license in Indiana?

If your firm applies or offers to apply pesticide for hire, yes. Note the phrase offers to apply — advertising the service triggers the requirement before any application happens. The business license must include a certificate of insurance for that location, and must include fees for at least one certified applicator for hire working at that location.

What does Indiana pesticide licensing cost?

Annual fees are $45 for the business and $45 for each certified applicator and registered technician. So the cost scales with headcount rather than with a flat business fee — a company with three certified applicators is paying for the business plus each of them.

Tree work sits alongside our full guide to starting a landscaping business in Indiana, and the wider guide to starting a business in Indiana.

Sources

Source	What It Covers
Office of Indiana State Chemist — pesticide, fertilizer and distribution licenses	The pesticide business license for firms that apply or offer to apply for hire, the certificate of insurance for that location, the requirement to include fees for at least one certified applicator, and the $45 annual fees
OISC — Indiana pesticide credential categories	The credential categories, including ornamental and turf
OISC — how to become a certified and licensed applicator	The certification exam route for commercial applicator categories
INBiz — Indiana business registration	Articles of organization filing for an Indiana LLC