| Abbreviation | Definition |
|---|---|
| AT | Automatic Transfer |
| ATAP | Association of Tax Accounting Professionals |
| ATB | Accounting Terminology Bulletins |
| ATB | Aged Trial Balance |
| ATC | Accountancy Training Centre |
| ATC | Accounting Technician Certificate |
| ATC | Average Total Cost |
| ATC | Average Total Costs |
| ATCL | Accounting Tax Corporate Legal |
| ATD | Accounting Technicians Diploma |
| ATD | Adjustment Transfer Debit |
| ATD | Advice Transfer Debit |
| ATD | Applied to Deductible |
| ATE | Authorised Training Employer |
| ATF | After The Flat |
| ATF | As Trustee For |
| ATFT | Accounting Tools For Tutors |
| ATL | Above the Line |
| ATLAS | Accounting Transaction Ledger Archival System |
| ATO | Asset TurnOver |