- The initial two-year CIER term costs $500: a $100 examination fee plus a $400 certification fee.
- The certification fee includes a $100 nonrefundable processing fee, so a denied application still costs you.
- A retake costs $100; renewal at the end of each two-year term costs $400.
- ACAC publishes no separate member and non-member fee schedule for this credential.
The Official CIER Fee Schedule
The Council-certified Indoor Environmental Remediator credential is issued by the American Council for Accredited Certification (ACAC) through its CIER Certification Board, and its pricing is refreshingly simple compared with many professional credentials. ACAC lists fees in US dollars on its Fees and Payments page, and the numbers below reflect that schedule as rechecked for this article.
| Fee Item | Amount (USD) | Notes |
|---|---|---|
| Examination fee | $100 | Part of the initial package |
| Certification fee | $400 | Includes a $100 nonrefundable processing fee |
| Initial total (two-year term) | $500 | Exam plus certification |
| Exam retake | $100 | Per additional attempt |
| Renewal | $400 | Per two-year term |
Because ACAC does not publish a separate member and non-member schedule, you do not need to budget around a membership decision before applying. The figure you see is the figure you plan around. As always, confirm the current numbers on the issuer's fee page before paying, since administrative pages can change. For the full eligibility picture that precedes any payment, see our guide to CIER requirements, eligibility and prerequisites.
What the $500 Initial Fee Actually Covers
The $500 breaks into two pieces, and understanding the split matters because the pieces behave differently if something goes wrong.
The $100 examination fee
This pays for your sitting of the CIER examination: 100 multiple-choice questions, each with at least four answer options, delivered by computer over three hours in a closed-book format. The passing score is 75%, set using the Modified Angoff method. The exam is administered through Kryterion, Inc., and you can take it at a testing center or through online video proctoring. For a deeper look at how that threshold works, read our breakdown of the CIER passing score.
The $400 certification fee and the $100 processing fee
The certification fee covers the credential itself for the initial two-year term. Inside that $400 sits a $100 nonrefundable processing fee. In practical terms, this is the part of your spending that is at risk before you ever see an exam question: the application must clear board review, which ACAC's current application page describes as requiring unanimous board approval, with the board meeting every four to six weeks. If your application is not approved, you should assume the processing fee is gone.
Costs That Never Appear on the Fee Page
The $500 is the cost of the credential. The cost of becoming eligible for the credential is a different matter, and for CIER it can be the larger number in real terms.
The experience requirement carries a time cost
CIER candidates need either a related two-year postsecondary degree or 15 qualifying college credits plus at least one year of documented indoor environmental remediation experience, or a high school diploma or GED plus two years of experience. That experience must cover at least two of five areas: asbestos, lead, hazardous materials, microbial and allergens, and industrial hygiene, chemicals and toxicology. ACAC's FAQ makes clear that actual field experience is required. If you are early in your career, the true cost of this credential includes the months or years of field work needed to qualify, and the opportunity cost of steering your assignments toward two or more of those areas.
Documentation effort
You must submit four project sheets, applicable educational evidence and experience verification. Each project sheet describes the problem, your own responsibilities and actions, and the outcome. There is no fee for writing them, but expect to spend real hours reconstructing projects, tracking down verifiers and, depending on which administrative instructions govern your file, possibly arranging notarized forms or employer affidavits. ACAC's current application page and its handbook differ on some of these details, so confirm the current process directly with the issuer before you start gathering paperwork.
Technology and logistics
If you test at a center, expect to bring two government-issued IDs, including one photo ID, and to arrive early; ACAC's pages and handbook disagree on whether that means 15 or 30 minutes, so plan for the longer window. If you test online, you need your own computer, an approved webcam, a private location and an internet connection of at least 2 Mbps upload and download. Phones and tablets are excluded. If your current setup does not meet those specifications, an upgrade is a real, if modest, cost.
Retake and Renewal Costs
Two recurring numbers deserve a place in any long-term budget.
The $100 retake
A failed attempt costs $100 to repeat. That is cheap relative to the initial package, which makes it tempting to treat the first sitting as a trial run. Resist that. The exam is three hours of closed-book questions drawn from regulations and technical practice across asbestos, lead, hazardous materials, microbial contaminants and chemicals, and a casual first attempt wastes both the fee and your momentum. Our article on how hard the CIER exam is will help you judge your readiness honestly before you book.
One caution on expectations: ACAC does not disclose a numerical pass rate for CIER in the reports we reviewed, and its published certification activity data shows dashes rather than figures. A dash is not a 0% pass rate, and we do not invent one here. Our piece on the CIER pass rate explains how to read that data without over-interpreting it.
The $400 renewal
Certification lasts two years, and renewal costs $400. ACAC's current Recertification Procedures call for 40 recertification credits (RCs) per term: 10 for continued field activity and 30 for professional development, with attestation and retained evidence in case of audit. A current photo is also requested. The handbook and program pages describe the renewal credit requirements somewhat differently, so rely on the current procedures page and keep your records organized from day one.
The renewal credits are where hidden spending can accumulate. Professional development can be free or expensive depending on how you earn it, so plan the 30 professional-development RCs deliberately rather than scrambling in the final months of your term.
Preparation Spending: What to Buy and What to Skip
No mandatory preparation course or minimum training-hour requirement is published for CIER. ACAC states that it does not develop or administer preparation courses, and its prep-course page did not list a CIER-specific offering when reviewed. That leaves you to decide how much, if anything, to spend, and the free official material is substantial.
Start with the free official sources
The ACAC CIER Candidate Handbook includes required skills and an exam study guide covering five published competency headings that map to the five domains below. The public study guide warns that its selected pages are examples rather than exhaustive coverage and advises studying the references comprehensively. Those references are mostly public regulatory documents, which is good news for your budget.
The five published competency areas
Each heading addresses engineering controls, cleaning and removal methods, worker safety and applicable regulations. They are unweighted issuer competencies, and no public domain chart or percentage weights could be verified.
- Domain 1: Understand and execute successful remediation of asbestos in the indoor environment
- Domain 2: Understand and execute successful remediation of lead in the indoor environment
- Domain 3: Understand and execute successful remediation of hazardous materials in the indoor environment
- Domain 4: Understand and execute successful remediation of microbial contaminants and allergens in the indoor environment
- Domain 5: Understand and execute successful remediation of chemicals in the indoor environment
The listed study materials include the ACAC Code of Conduct, 40 CFR 763, 40 CFR 61 Subpart M, 29 CFR 1926.1101, 40 CFR 745, 29 CFR 1926.62, 29 CFR 1910.120, the New York City Department of Health and Mental Hygiene guidelines on assessing and remediating fungi in indoor environments (2008), the NIOSH Respirator Selection Logic (2004), mercury-response material, and the EPA Voluntary Guidelines for Methamphetamine Laboratory Cleanup. Most of these are free to read online. Note that the handbook and study guide describe the mercury document inconsistently, so verify which mercury reference you are actually studying. Our complete guide to the CIER exam domains walks through how these references line up with each content area.
Evaluating paid third-party materials
Several marketplaces carry CIER-labeled study documents and flashcards at varying price points. We have not verified the full contents or answer quality of paid material, and several listings use generic professional-process scenarios with weak alignment to the actual exam. Before paying for anything, check four things:
- Does the preview mention specific regulations from the official reference list, such as the asbestos and lead standards?
- Does it cover all five domains, including chemicals and hazardous materials, rather than only mold?
- Are answers explained with reference to a regulation or guideline, not just stated?
- Does the seller identify the exact credential as the ACAC Council-certified Indoor Environmental Remediator, rather than a similarly named certification?
That last check matters. The CIER acronym is shared by several unrelated credentials, and material written for another one will waste your money and your study time. Our CIER study guide shows how to build a plan around the official references, and the CIER cheat sheet is a quick way to confirm you have the core facts straight.
Where practice questions fit
Because the exam is multiple-choice and closed-book, timed practice with explanations is the most efficient paid spending for most candidates. You can work through scenario-style items on our CIER practice test site to find weak domains before you commit to a sitting.
Exam Delivery Options and Their Cost Implications
ACAC offers both testing-center and online video-proctored delivery. The published fee schedule does not distinguish between them, so the choice comes down to indirect costs.
| Factor | Testing Center | Online Proctored |
|---|---|---|
| Published exam fee | $100 (no separate delivery fee published) | $100 (no separate delivery fee published) |
| Equipment | Provided by the center | Your computer, approved webcam, private room |
| Connection | Not your concern | At least 2 Mbps upload and download; no phones or tablets |
| Identification | Two government-issued IDs, including one photo ID | Per proctoring instructions |
| Travel | Possible travel time and expense | None |
Online delivery eliminates travel but demands a compliant environment, and a technical failure mid-exam is a stressful way to lose focus. Testing centers cost you travel time but remove the equipment risk. Scores are available electronically immediately and confirmed by email, so you learn your result without delay either way. For timing and deadlines, see our CIER exam dates and scheduling guide.
Building a Realistic Budget
Rather than a single number, think in three scenarios built only from published fees.
| Scenario | Published Fees | Total |
|---|---|---|
| Pass on first attempt | $100 exam + $400 certification | $500 |
| Pass on second attempt | $500 + $100 retake | $600 |
| Pass first time, then renew once | $500 + $400 renewal | $900 |
These totals exclude study materials, professional-development costs, equipment upgrades and the value of your time. They also assume your application is approved; if it is not, you have still spent the $100 nonrefundable processing fee.
A short sequencing note tied to the five domains
If you are paying out of pocket and want to minimize the chance of a $100 retake, schedule your reading to match the regulatory weight of each area. Spend your first block on asbestos (40 CFR 763, 40 CFR 61 Subpart M and 29 CFR 1926.1101) and lead (40 CFR 745 and 29 CFR 1926.62), because those are dense, citation-heavy standards. Move to hazardous materials and 29 CFR 1910.120 next, then microbial contaminants and the NYC fungi guidelines, and finish with chemicals, including the mercury and methamphetamine-lab material. Leave your final stretch for mixed practice questions so the five domains are fresh together.
Does the cost pay off?
We cannot quote a salary premium for CIER holders: no reliable salary survey specific to this credential was verified, and we will not invent one. If you are weighing the $500 against career value, our analyses of whether the CIER is worth it and the CIER salary landscape lay out what is and is not known, and our overview of CIER jobs covers the kinds of roles where this credential is relevant.
Key Takeaway
The published cost of CIER is low and predictable: $500 to start, $100 per retake, $400 per renewal. The real variables are the experience you must document, the nonrefundable $100 processing fee, and how much you spend on preparation. Verify the current fee page and application instructions before you pay anything.
Frequently Asked Questions
The initial two-year term costs $500 in USD: a $100 examination fee plus a $400 certification fee that includes a $100 nonrefundable processing fee. A retake is $100 and renewal is $400 per two-year term.
The $100 processing fee within the certification fee is described as nonrefundable. Confirm refund terms for the remaining amounts directly with ACAC before paying, since policies can change.
No. ACAC publishes no mandatory preparation course or minimum training-hour requirement, and it does not develop or administer preparation courses. The official handbook and its listed regulatory references are the primary study sources.
No separate member and non-member fee schedule is published for CIER. The listed fees apply as shown on ACAC's Fees and Payments page.
Renewal is $400 per two-year term, and the current procedures require 40 recertification credits: 10 for continued field activity and 30 for professional development. Budget separately for any paid professional-development activities you choose to use.