The International Association of Assessing Officers

What The International Association of Assessing Officers does

The International Association of Assessing Officers (IAAO) is a nonprofit professional membership association founded in 1934 and headquartered in Kansas City, Missouri, serving approximately 8,000 property assessment professionals across government jurisdictions, the private sector, and academia worldwide. Its core function is setting and propagating mass appraisal standards through a portfolio of educational products, professional designations, technical publications, and an industry event calendar. The technology platform comprises IAAO-U (a learning management system at learn.iaao.org delivering 30+ courses, 25+ workshops, self-study programs, and webinars), IAAO Connect (a member community platform), the Paul V. Corusy Memorial Library, a Research Exchange repository, and ProctorFree-integrated remote proctored examinations. Six internationally recognized professional designations (CAE, RES, MAS, AAS, PPS, CMS) anchor the credentialing business, supported by recertification requirements and the newer CEAA and Professional Member Program certificates.

IAAO operates a multi-stream revenue model. Membership dues range from $50 (emerging markets) to $255 (Regular/Associate), with intermediate tiers for Entry Level ($175), Retired ($85), and Student ($70) members, prorated quarterly. Designation-related fees include a $145 candidacy application, $170/$85 annual designation maintenance, and a $50 accredited member fee. Education programs (Certified and Contract courses, workshops, one-day forums), publications (Fair + Equitable magazine, Journal of Property Tax Assessment & Administration, Assessing Info newsletter), event registrations across five flagship conferences, and Professional Consulting Services of IAAO (PCS) round out the monetization stack. The go-to-market is community-led: nearly 80 Chapter and Affiliate associations globally handle local delivery and recruitment; affinity groups (Large Jurisdiction Group, Launch Pad, WIN) deepen engagement; and a mentorship program and scholarships pipeline new entrants. Distribution mixes self-serve online (IAAO-U, my.iaao.org) with field delivery through local education coordinators and sponsoring agencies. IAAO established its first non-US office in Belgrade, Serbia in 2025 to serve Southeast Europe, and runs a reduced-rate emerging-markets trial program initiated in 2024 to grow international membership.

Name

The International Association of Assessing Officers

Legal name

International Association of Assessing Officers

Website

https://iaao.org

Company type

Private

Founded year

1934

Operating status

Operating

Headcount range

11–50 employees

Short description

IAAO is a 1934-founded nonprofit professional association serving ~8,000 property assessment professionals worldwide through education, six designations (CAE, RES, MAS, AAS, PPS, CMS), technical standards, publications, events, and consulting, delivered via nearly 80 chapters and affiliates.

Ownership category

akta.pro rank

Product category

Professional Association Services

NAICS

Business Associations (813910), Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors (92615)

SIC

Services-Membership Organizations (8600), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Psychometric Standards, Test Development & Validation Authorities (EDADAFAG)

akta.pro secondary industry

Standards, Metrology & Accreditation Bodies (BPAIAOAC)

Keywords

• Property tax assessment
• Mass appraisal standards
• Professional designations
• Assessment education
• Valuation methodology

Headquarters

HQ city

Kansas City

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Membership Dues: Annual membership dues paid by individuals (Regular, Associate, Entry Level, Student, Retired) and organizational Affiliate members. Membership runs January 1 through December 31. Dues are prorated quarterly for new members.
2. Professional Designations: Fees for professional designation candidacy applications ($145), annual designation fees ($170 first, $85 second, $85 additional), and accredited member fees ($50). Includes fees for demonstration appraisal reports and case study examinations.
3. Education Programs: Revenue from courses, workshops, one-day forums, and self-study programs. Course fees vary by program type (Certified vs Contract). Includes continuing education units (CEUs) and exam retake/challenge fees.
4. Publications and Resources: Sales of IAAO publications including books, multimedia materials, and periodicals (Fair + Equitable magazine, Journal of Property Tax Assessment & Administration, Assessing Info newsletter) available through the marketplace.
5. Events and Conferences: Registration fees for Annual Conference, International Research Symposium, Legal Seminar, GIS/Valuation Technologies Conference, Mass Appraisal Valuation Symposium, and Emerging Leadership Summit.
6. Professional Consulting Services: Professional Consulting Services of IAAO (PCS) provides consulting services to jurisdictions, available through pcsiaao.com.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels8 records

Core offering

The International Association of Assessing Officers (IAAO) is a nonprofit professional membership association that delivers education, professional designations, technical standards, publications, and conferences for property assessment officials and tax administration personnel worldwide. Its portfolio includes 30+ courses and 25+ workshops, six internationally recognized designations (CAE, RES, MAS, AAS, PPS, CMS), flagship events such as the Annual Conference and International Research Symposium, periodicals including Fair + Equitable and the Journal of Property Tax Assessment & Administration, the Paul V. Corusy Memorial Library, and consulting services delivered through Professional Consulting Services of IAAO (PCS).

Product overview

The International Association of Assessing Officers (IAAO) is a professional membership association, not a software product company. IAAO offers a comprehensive ecosystem of education, credentialing, publications, events, and member services for property assessment professionals worldwide. The portfolio consists of: IAAO-U (online learning platform) and instructor-led courses/workshops/one-day forums for professional education; six internationally recognized professional designations (CAE, RES, MAS, AAS, PPS, CMS) for career credentialing; publications including Fair + Equitable magazine, Journal of Property Tax Assessment & Administration, and Assessing Info newsletter; flagship events including the Annual Conference, International Research Symposium, GIS/Valuation Technologies Conference, Legal Seminar, and Mass Appraisal Valuation Symposium; the Paul V. Corusy Memorial Library and Research Exchange for knowledge resources; IAAO Connect for member community; affinity groups (Launch Pad, Women's Initiative Network, Large Jurisdiction Group) for networking; and scholarship programs for financial assistance. IAAO serves approximately 8,000 members through nearly 80 Chapter and Affiliate organizations globally.

Differentiator

Problem solved

Functional benefit

Products and services

• IAAO Membership Annual membership program for property assessment professionals and related government, private-sector, and academic stakeholders, with tiered categories (Regular, Associate, Entry Level, Student, Retired) priced by country of residence and including benefits such as publications, library access, member discounts, and chapter affiliation.
• IAAO-U Online Learning Platform

Quantifiable outcome

• 7 to 1 return on investment for IAAO membership

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered minor.

• Enterprise Rent-A-CarminorOthersEnterprise and National brand rental car services available to IAAO members at discounted rates. Members use account number XZ05497 for Business accounts and XZ05P30 for leisure rentals.
• National Car RentalminorOthersNational and Enterprise brand rental car services available to IAAO members at discounted rates. Members use account number XZ05497 for Business accounts and XZ05P30 for leisure rentals.
• Omaha SteaksminorOthersIAAO members receive 10% off all purchases from Omaha Steaks website with free shipping on select combos. Part of IAAO Savings Center program.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Government Finance Officers Association (GFOA): Membership association for state and local government finance officers offering the CPFO designation, training, and technical standards. Closely comparable to IAAO in structure: nonprofit, government-employee members, designations, conferences, and standards-setting role.
• American Society of Appraisers (ASA): U.S. professional association offering credentials (ASA, AM, FASA) for real estate, business valuation, and personal property appraisers. Overlaps IAAO's PPS and CAE designations and competes for the same continuing-education and designation fee budget.
• National Institute of Governmental Purchasing (NIGP): Professional association for government procurement officers offering the CPPO/CPP designations, education, and standards. Same membership-association-for-government-professionals archetype as IAAO with comparable revenue streams and structure.
• Appraisal Institute: Largest U.S. professional association for real property appraisers, offering the MAI, SRA, AI-GRS, and AI-RRS designations. Directly competes with IAAO for the same professional designation, education, and credentialing spend among valuation professionals.
• Royal Institution of Chartered Surveyors (RICS): Global professional body for property and real estate professionals offering the MRICS/FRICS chartered surveyor credential with deep international reach. Competes with IAAO for international mass appraisal and property valuation membership and standards authority.
• International City/County Management Association (ICMA): Professional and educational association for municipal and county administrators with credentialing programs (ICMA Credentialed Manager). Direct structural analog to IAAO — membership association, government professional audience, designations, conferences, and research output.
• International Association of Chiefs of Police (IACP): Long-established U.S./international professional association for law enforcement leaders offering training, certifications, and policy standards. Structurally analogous to IAAO in governance, chapter model, and member services delivery.

Broad incumbents

• American Institute of Certified Public Accountants (AICPA): Massive U.S. professional association offering the CPA credential, continuing professional education, and technical standards. Highly comparable business model — multi-stream revenue (dues, CPE, publications, conferences, credential maintenance) — though in accounting rather than property assessment.
• National Association of Counties (NACo): U.S. membership organization serving county governments with policy advocacy, training, and conferences. Broader than IAAO in scope but overlaps in serving county assessors as part of a wider county-official portfolio.

Emerging players

• CoreLogic (now ICE Mortgage Services / Cotality MLS data platforms): Property data, analytics, and valuation technology provider serving the same assessor and appraiser customer base. Represents the technology-enabled competitive vector that could reshape IAAO's traditional education and credentialing role.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/iaaohq
• Facebookfacebook.com/IAAO.org
• LinkedInlinkedin.com/company/international-association-of-assessing-officers
• Instagraminstagram.com/iaaohq

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about The International Association of Assessing Officers