ISA Certified Arborist Exam Cost, Scheduling, and Registration

The ISA Certified Arborist exam costs $170 for ISA members and $280 for non-members. That's the exam fee alone. Add the required study guide ($90 member / $130 non-member), optional ISA membership ($150 to $170 a year), and the $125 administrative fee for computer-based testing, and the full cost of getting certified runs roughly $410 to $555 depending on the path you take. Once your application is approved, you get a 90-day window to sit the exam.

Note: For the master overview, see our Complete ISA Certified Arborist Exam Study Guide.

Getting your ISA credentials involves more logistics than most trades require. You can't just show up and test. The ISA vets every applicant first, and once you clear that step, there's a real decision tree in front of you: computer-based or paper exam, member or non-member, book it now or buy the extension later.

None of it is complicated once someone lays it out. Here's the full arc, from what you'll actually spend to get certified, through scheduling and rescheduling, to what recertification costs three years later.

Exam Costs: Member vs. Non-Member

The ISA prices membership into the exam on purpose. Members pay about $170 for the exam; non-members pay about $280, a $110 gap. Annual ISA membership runs $150 to $170 depending on your chapter, and it also drops the study guide from $130 to $90, a $40 saving. Add those two discounts together and membership covers most or all of its own cost before you've even sat the exam.

Run the actual numbers and a member and a non-member who both take the paper exam end up paying almost the same total, about $410, for the exam fee and study guide combined. The real payoff of membership doesn't show up on exam day. It shows up three years later, when the recertification fee is $170 for members against $290 for non-members, and again every three years after that. Join before you register if you plan to stay in the field long enough to recertify even once. The math favors it every cycle after the first.

Testing Centers vs. Paper Exams

You have two ways to sit the exam. Computer-based testing through Pearson VUE gives you the most control: pick nearly any weekday at hundreds of testing centers, get a preliminary result before you leave the building, and test in a quiet, proctored room built for this. It costs a $125 administrative fee on top of your exam fee, charged by Pearson VUE separately from the ISA.

Paper-based testing happens through local ISA chapters instead, usually tied to a chapter meeting or conference. There's no administrative fee, which is the appeal, but you're locked into whatever date your chapter has scheduled, often a weekend, and results take 4 to 6 weeks to arrive by mail. If your chapter's paper exam date happens to line up with when you're ready, it's the cheaper option. If it doesn't, waiting for it can cost you more in delayed certification than the $125 would have.

ISA Exam Dates and the 90-Day Scheduling Window

There's no fixed national exam date the way there might be for a bar exam or a licensing test. Computer-based testing runs on a rolling schedule, whatever days a Pearson VUE center near you has open, which in practice means you can usually test within a couple of weeks of deciding to. Paper exams are the ones with fixed dates, set by individual ISA chapters and typically tied to a spring or fall chapter event. Check your chapter's calendar directly if a paper exam is what you're after.

Either way, the clock that actually matters starts when your application is approved. You get a 90-day window from that point to sit the exam. Miss it, whether you never scheduled or scheduled and didn't show, and you forfeit the exam fee entirely. If you need more time, an extension is usually available for about $50, cheaper than paying the full fee again but still money you don't have to spend if you schedule realistically the first time.

Rescheduling Rules

Plans change. If you're testing through Pearson VUE and need to move your date, give more than 24 to 48 hours notice and you can usually reschedule for free or for a small fee. Give less than 24 hours notice, or simply don't show up, and you forfeit the exam fee outright, the same outcome as missing the 90-day window entirely.

Check your testing center's exact location and parking situation a few days ahead, not the night before. A wrong address or a closed parking garage doesn't count as an emergency to Pearson VUE, and by the time you're circling the block looking for a spot, you've already burned the buffer you'd normally use to walk in calm.

Recertification Costs Down the Road

Passing the exam starts a three-year clock, not the end of the process. To keep your credential, you need 30 Continuing Education Units and a recertification fee, about $170 for members and $290 for non-members, due every three years. Skip either requirement and the certification lapses, which means retaking the full 200-question exam to get it back.

Thirty CEUs is a lower bar than it sounds, about ten a year, and most of them come from things you're probably already doing: chapter conferences, ISA-approved webinars, safety meetings that cover ANSI Z133 topics, and the quiz that comes with every issue of Arborist News. Our full guide to earning ISA CEUs covers exactly how to rack up all 30 without a last-minute scramble.

The Full Financial Picture: First Exam to First Recertification

Here's what the entire first cycle costs, start to finish, combining everything above into real totals.

A member who tests on paper and keeps dues current pays roughly $410 up front: the exam fee, the study guide, and a year of membership at the low end of its $150 to $170 range. Then another $170 lands at the three-year mark. That's about $580 total to go from unqualified to recertified once. Swap in computer-based testing and the up-front number climbs to about $535, pushing the three-year total to roughly $705.

A non-member pays close to that same $410 up front on paper testing, since the higher exam and study-guide fees roughly cancel out what a member spends on dues. The difference shows up at recertification: $290 instead of $170, which puts the non-member's three-year total around $700, or $825 with computer-based testing. That $120 recertification gap repeats every three years, so it keeps compounding in the member's favor for as long as they hold the credential.

Cost by Path

Path	Exam + Guide + Dues (Up Front)	Recertification (Year 3)	3-Year Total
ISA member, paper exam	~$410	~$170	~$580
ISA member, computer-based	~$535	~$170	~$705
Non-member, paper exam	~$410	~$290	~$700
Non-member, computer-based	~$535	~$290	~$825

From Application to Passing

1. Join the ISA (optional, but usually worth it). The fee savings on the exam and study guide typically outweigh a year of dues, and membership sets up cheaper recertification three years out.
2. Apply for eligibility. You need three years of qualifying field experience, or less with a relevant degree. Our eligibility and application walkthrough covers exactly what counts and the most common reasons applications get rejected. Approval usually takes 5 to 10 business days.
3. Receive your authorization. Approval opens your 90-day scheduling window, so don't apply until you're within a few months of being ready to test.
4. Create a Pearson VUE account, if you're testing by computer, and pick a date and center.
5. Study on a real schedule, not a cram plan. Most candidates need 70 to 90 hours of prep; our guide to the best ISA exam prep resources covers what's worth buying beyond the required study guide.
6. Show up and pass. Bring two forms of ID and arrive early. Our exam day checklist covers everything worth double-checking the morning of.

Cost Breakdown

Item	ISA Member	Non-Member
Exam fee	~$170	~$280
Study guide	~$90	~$130
Membership	~$150–$170/yr	—
Computer-based testing fee	~$125	~$125
Recertification (every 3 yrs)	~$170	~$290
90-day window extension	~$50	~$50

Frequently Asked Questions

How much does the ISA Certified Arborist exam cost?

The exam fee alone is about $170 for ISA members and $280 for non-members. That's not the full cost of getting certified, though. Add the required study guide and, if you test by computer, a $125 administrative fee, and the realistic total runs $410 to $555 depending on your path.

How much does it cost to become a certified arborist overall?

Budget roughly $410 to $555 from application to passing, covering the exam fee, the study guide, and a computer-based testing fee if you use one. ISA membership is optional but close to free once its exam and study-guide discounts are factored in, so most candidates land near the low end of that range either way.

Is ISA membership worth it just for the exam discount?

On exam day alone, it's close to a wash: the discount on the exam fee and study guide roughly offsets a year of dues. The real savings show up at recertification, when members pay $170 against $290 for non-members, a gap that repeats every three years you stay certified.

When are ISA exam dates and how do I find one near me?

There's no single national test date. Computer-based testing through Pearson VUE runs on a rolling schedule, so you can typically book within a couple of weeks at any center near you. Paper-based exams run on fixed dates set by individual ISA chapters, usually tied to a spring or fall chapter event, so check your local chapter's calendar directly.

How long do I have to take the ISA exam after registering?

You get a 90-day scheduling window starting when your application is approved. Miss it and you forfeit the exam fee, though an extension can usually be purchased for around $50.

Can I reschedule my ISA exam?

Yes, if you give enough notice. More than 24 to 48 hours ahead, you can typically reschedule for free or a small fee. Inside 24 hours, or if you simply don't show up, you forfeit the exam fee.

What is included in the ISA exam fee?

Just the exam itself. The study guide, ISA membership, and the Pearson VUE administrative fee for computer-based testing are all separate charges, which is why the exam fee alone understates what it actually costs to get certified.

What happens if I miss my scheduled ISA exam appointment?

You forfeit the exam fee, the same outcome as letting the 90-day window expire without testing. If you need to reschedule, do it with more than 24 to 48 hours notice so you keep the option of a free or low-cost date change instead.

How much does it cost to maintain ISA certification?

Recertification is roughly $170 for members and $290 for non-members every three years, plus 30 CEUs. Letting either lapse means retaking the full 200-question exam at whatever the current fee happens to be.