| Abbreviation | Definition |
|---|---|
| ABI | accounting bookkeeping and income |
| ABIAF | Association of British Independent Accounting Firms |
| ABM | Accountancy Board of Malta |
| ABN | Accounting Bodies Network |
| ABOM | Accounting Business and Office Management |
| ABOM | Automated Bill Of Materials |
| ABR | Automated Budget Reallocation |
| ABREMA | Activity Based Risk Evaluation Model of Auditing |
| ABS | Accounting and Billing System |
| ABS | Alternative Business Structure |
| ABTEE | Annualized Before Tax Expense Equivalent |
| ABV | Accredited in Business Valuation (US) |
| AC | Accounting Council |
| AC | Additional Charge |
| AC | All Current |
| ACA | A Chartered Accountant |
| ACA | Accreditation Council for Accountancy |
| ACA | Actual Cost Adjustment |
| ACA | Associate of the Institute of Chartered Accountants in England and Wales |
| ACA | Associate of the Institute of Chartered Accountants in Ireland |