| Abbreviation | Definition |
|---|---|
| HP | Hire Purchase |
| HV | High Volume |
| HVSP | Holiday, Vacation, Sick Pay |
| IAA | Internal Accounting Association |
| IAA | International Accounting Association |
| IAAA | I Am An Accountant |
| IAAA | Inter- American Accounting Association |
| IAAB | Insurance Agency Accounting and Bookkeeping |
| IAAE | International Accounting Auditing Ethics |
| IAAER | International Association for Accounting Education and Research |
| IAAER | International Association for Accounting Education Research |
| IAAM | Independent Accountants Association of Michigan |
| IAAP | International Association of Accounting Professionals |
| IAASA | Irish Auditing Accounting Supervisory Authority |
| IAASA | Irish Auditing and Accounting Supervisory Authority |
| IAASA | Irish Auditing and Accounting Supervisory Authority (Accountant Feb 2002) |
| IAASB | International Auditing and Assurance Standards Board |
| IAB | Institute der Accountants en Belastingadvizeurs (Belgium) |
| IAB | International Association of Book-keepers |
| IACJCE | Instituto de Auditores-Censores Jurados de Cuentas (Institute of Sworn Auditors) (Spain) |