| EX Code | Description | Tax Code |
| AB | ABATEMENT | 11.28 |
| CH | CHARITABLE | 11.18 |
| CHODO | Community Housing Development Organizations | 11.182 |
| CLT | Community Land Trust | 11.1827 |
| DP | DISABILITY | 11.13 |
| DPS | DISABLED Surviving Spouse | 11.22 |
| DSTR | Disaster Damage Exemption | 11.22 |
| DV1 | Disabled Veterans 10% – 29% | 11.22 |
| DV1S | Disabled Veterans Surviving Spouse 10% – 29% | 11.22 |
| DV2 | Disabled Veterans 30% – 49% | 11.22 |
| DV2S | Disabled Veterans Surviving Spouse 30% – 49% | 11.22 |
| DV3 | Disabled Veterans 50% – 69% | 11.22 |
| DV3S | Disabled Veterans Surviving Spouse 50% – 69% | 11.22 |
| DV4 | Disabled Veterans 70% – 100% | 11.22 |
| DV4S | Disabled Veterans Surviving Spouse 70% – 100% | 11.22 |
| DVCH | Disabled Veteran Charity Homestead | 11.132 |
| DVCHS | Disabled Veteran Charity Homestead Surviving Spouse | 11.132 |
| DVHS | Disabled Veteran Homestead | 11.131 |
| DVHSS | Disabled Veteran Homestead Surviving Spouse | 11.131 |
| EX-XA | Public property for housing indigent persons | 11.111 |
| EX-XD | Improving property for housing with volunteer labor | 11.181 |
| EX-XF | Assisting ambulatory health care centers | 11.183 |
| EX-XG | Primarily performing charitable functions | 11.184 |
| EX-XH | Developing model colonia subdivisions | 11.185 |
| EX-XI | Youth spiritual, mental, and physical development organizations | 11.19 |
| EX-XJ | Private schools | 11.21 |
| EX-XL | Organizations Providing Economic Development Services to Local Community | 11.231 |
| EX-XM | Marine cargo containers | 11.25 |
| EX-XN | Motor vehicles leased for personal use | 11.252 |
| EX-XO | Motor vehicles for income production and personal use | 11.254 |
| EX-XP | Offshore drilling equipment not in use | 11.271 |
| EX-XQ | Intracoastal waterway dredge disposal site | 11.29 |
| EX-XR | Nonprofit water or wastewater corporation | 11.36 |
| EX-XS | Raw cocoa and green coffee held in Harris County | 11.33 |
| EX-XT | Limitation on taxes in certain municipalities | 11.34 |
| EX-XU | Miscellaneous Exemptions | 11.23 |
| EX366 | HOUSE BILL 366 | 11.145 |
| FR | FREEPORT | 11.251 |
| FRSS | First Responder Surviving Spouse | 11.134 |
| GIT | GOODS IN TRANSIT | 11.253 |
| HS | HOMESTEAD | 11.13 |
| HT | HISTORICAL | 11.24 |
| LIH | Public property for housing indigent persons | 11.111 |
| LVE | LEASED VEHICLE | 11.252 |
| MASSS | Member Armed Services Surviving Spouse | 11.132 |
| OV65 | OVER 65 | 11.13 |
| OV65S | OVER 65 Surviving Spouse | 11.13 |
| PC | POLLUTION CONTROL | 11.31 |
| PPV | Personal Property Vehicle | 11.14 |
| SO | SOLAR | 11.27 |
