| From | ||||
| Destination | GBP | USD | EURO | |
| Taiwan | 2p | 3¢ | 3¢ | |
| Taiwan - Mobile | 6p | 9¢ | 7¢ | |
| Taiwan-Mobile-Chunghwa | 6p | 9¢ | 7¢ | |
| Tajikstan | 8p | 12¢ | 9¢ | |
| Tajikstan - Mobile | 7p | 10¢ | 8¢ | |
| Tanzania | 9p | 13¢ | 11¢ | |
| Tanzania - Mobile | 9p | 13¢ | 11¢ | |
| Thailand | 1p | 2¢ | 2¢ | |
| Thailand - Mobile | 1p | 2¢ | 2¢ | |
| Togo | 28p | 40¢ | 32¢ | |
| Togo - Mobile | 28p | 40¢ | 32¢ | |
| Tokelau | 49p | 70¢ | 55¢ | |
| Tonga | 30p | 43¢ | 34¢ | |
| Tonga - Mobile | 30p | 43¢ | 34¢ | |
| Trinidad & Tobago | 4p | 6¢ | 5¢ | |
| Trinidad & Tobago - Mobile | 8p | 12¢ | 9¢ | |
| Trinidad & Tobago - Mobile (Digicel) | 7p | 10¢ | 8¢ | |
| Tunisia | 13p | 19¢ | 15¢ | |
| Tunisia - Mobile | 27p | 39¢ | 31¢ | |
| Tunisia - Mobile (Tunisiana) | 25p | 36¢ | 28¢ | |
| Turkey | 2p | 3¢ | 3¢ | |
| Turkey - Mobile | 8p | 12¢ | 9¢ | |
| Turkey - Mobile (KKTC Telsim) | 11p | 16¢ | 13¢ | |
| Turkey - Mobile (KKTCell) | 14p | 20¢ | 16¢ | |
| Turkey - Mobile (Telsim) | 7p | 10¢ | 8¢ | |
| Turkey - Mobile (Turkcell) | 6p | 9¢ | 7¢ | |
| Turkmenistan | 9p | 13¢ | 11¢ | |
| Turkmenistan - Mobile | 9p | 13¢ | 11¢ | |
| Turks & Caicos - Mobile (Digicel) | 16p | 23¢ | 18¢ | |
| Turks & Caicos Islands | 9p | 13¢ | 11¢ | |
| Turks & Caicos Islands - Mobile | 19p | 27¢ | 22¢ | |
| Tuvalu | 42p | 60¢ | 48¢ | |