| Abbreviation | Definition |
|---|---|
| CTBA | Center for Tax and Budget Accountability |
| CTD | Collecting Taxes Database |
| CTDF | Community Tax Declaration Form |
| CTDR | Council Tax Discretionary Relief |
| CTIM | Chartered Tax Institute of Malaysia |
| CTJ | Citizen for Tax Justice |
| CTJ | Citizens for Tax Justice |
| CTLP | Community Tax Law Project |
| CTO | Chief Tax Officer |
| CTO | Collection of Taxes is Obligation |
| CTP | Certified Tax Practitioner |
| CTPC | California Tax |
| CTRP | Comprehensive Tax Reform Program |
| CTSR | Center for Tax Strategies and Resources |
| CTT | Commodity Transaction Tax |
| CTT | Currency Transaction Tax |
| CTY | Current Tax Year |
| DAP | Delivery At Place |
| DAT | Department of Assessments and Taxation |
| DCIT | Deputy Commissioner of Income Tax |