| Abbreviation | Definition |
|---|---|
| ATR | Americans for Tax Reform |
| ATRM | American Tax Reduction Movement |
| ATROS | After Tax Return on Sales |
| ATT | Association of Tax Technicians |
| ATTD | Alcohol and Tobacco Tax Division |
| ATTIS | Analysis of Transfers Taxes and Income Security |
| ATU | Alcohol Tax Unit |
| ATW | average tax wedge |
| ATY | After Tax Yeild |
| BATL | Bonus And Tax Loan |
| BCTT | Banking Cash Transaction Tax |
| BCTT | Banking Cash Transactions Tax |
| Bd | Bead |
| BD | Breach of Duty |
| BEFIT | Business in Europe Framework for Income Taxation |
| BEPS | Base Erosion and Profit Shifting |
| BETB | Business Entities Tax Bureau |
| BETO | Bureau of Employer Tax Operations |
| BFIT | Before Federal Income Tax |
| BFTC | Beginning Farmer Tax Credit |