IAAI-FIT
IAAI-FIT®
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ExploreAbout this exam
The IAAI-FIT® is one of the credentials offered by the International Association of Arson Investigators, Inc., which describes itself as the world's premiere professional association for fire, arson, and explosion investigation professionals. According to the association's own description, the FIT credential is intended for personnel who have general experience in fire scene investigation without exclusive fire investigation specialization, such as fire officer, fire marshal, and insurance adjuster. It is therefore a natural step for people whose duties bring them to fire scenes regularly but who do not investigate fires full time, and who want a recognized marker of that competence before, or instead of, pursuing the more demanding IAAI-CFI® certification. The association states that the designation is based in job performance requirements in NFPA 1021, NFPA 1033, and NFPA 1037, so candidates should expect content grounded in fire officer duties, the professional practice of fire investigation, and fire marshal responsibilities rather than in a single specialty. Preparation should start with those three standards and their job performance requirements, then move to the association's own training channels, which include CFITrainer.Net® online training, self-study training organized by topic, in-person classes, and published resources such as the Fire Scene Evidence Collection Guide and the Fire Investigator Health and Safety Best Practices. Candidates should verify current application, fee, scheduling, and testing arrangements directly with the association, since those details are administered by the IAAI and are not established by this page. The IAAI also offers the (V) motor vehicle fire and (M) marine fire endorsements, which attach to an IAAI-FIT credential and demonstrate a fundamental understanding of investigating fires involving motor vehicles and marine vessels respectively.
What you'll study
About IAAI-FIT preparation
Who is the IAAI-FIT® actually designed for?
The association describes it as a credential for personnel who have general experience in fire scene investigation without exclusive fire investigation specialization, naming fire officers, fire marshals, and insurance adjusters as examples. If fire investigation is only part of your role rather than your full-time specialty, this is the credential the IAAI positions for you.
How does the FIT differ from the IAAI-CFI®?
The IAAI-CFI® is described by the association as the world's premiere certification for fire investigators, with rigorous requirements and corresponding prestige, and it measures against the job performance requirements in NFPA 1033. The FIT is the general-experience credential grounded in NFPA 1021, 1033, and 1037, aimed at people without exclusive investigation specialization.
What standards should I study first?
The association states the designation is based in job performance requirements in NFPA 1021, NFPA 1033, and NFPA 1037. Start by working through the job performance requirements in those three documents, since the credential is explicitly mapped to them rather than to a single specialty text.
What preparation resources does the IAAI provide?
The association lists CFITrainer.Net® as its online network for fire investigation training and resources, self-study training organized by topic, in-person classes open for registration, and published resources including the Fire Scene Evidence Collection Guide, the Fire Investigator Health and Safety Best Practices, and the Fire & Arson Investigator Journal.
Can I add a motor vehicle or marine endorsement?
Yes. The association offers a Motor Vehicle Fire Endorsement (V) and a Marine Fire Endorsement (M) that attach to an IAAI-CFI or IAAI-FIT credential. Each demonstrates that the holder has a fundamental understanding of how to properly investigate fires involving motor vehicles or marine vessels, respectively.
Where do I find the exam format, fees, and scheduling?
Those administrative details are not published on the association's home page, so confirm them directly with the IAAI before planning. The association lists a phone line (410-451-FIRE) and a mailing address in Forest Hill, Maryland, along with a contact form, and it posts news alerts about program changes.
Is anything about the credential changing?
The association's home page carries a notice titled Certifications and Designations Changes Beginning in May 2025, linking to further information. Anyone preparing now should read that notice and confirm the current requirements and naming before applying, since the announcement may affect how the credential is structured or titled.
How should a working fire officer sequence their study?
Begin with the NFPA 1021 material you already apply on scene, then move to NFPA 1033 job performance requirements, which cover the investigation itself, and finally NFPA 1037 fire marshal responsibilities. Reinforce each area with CFITrainer.Net® modules and the IAAI's evidence collection and health and safety resources.
Does the IAAI require membership to pursue the credential?
The association states that membership is open to all personnel who have an interest in the thorough and proper investigation of fire and explosion incidents, and it maintains separate membership types. Whether membership is a prerequisite for the FIT application is not stated on the home page, so verify eligibility directly with the IAAI.