| Abbreviation | Definition |
|---|---|
| ITIN | Individual Tax ID Number |
| ITIN | Individual Tax Identification Number |
| ITIN | Individual Tax Identification Numbers |
| ITIP | Income Tax Instalment Payments |
| ITIS | Income Tax Instalment System |
| ITO | Intuit Tax Online |
| ITOC | Income Tax Offset Credit |
| ITPF | International Tax Policy Forum |
| ITPN | Income Tax Planning Network |
| ITPP | Income Tax Preparation Program |
| ITR | Implicit Tax Rate |
| ITR | Income Tax Received |
| ITR | Income Tax Return |
| ITR | Income Tax Returns |
| ITR | International Tax Review |
| ITRF | Income Tax Return Form |
| ITRL | Internal Tax Regime Law |
| ITRR | Income Tax Return Request |
| ITRV | Income Tax Return Verification |
| ITSG | International Tax Specialist Group |