Derived from the Provincial Seal of Isabela where the town is located.
GREEN TRIANGLE :
The green color symbolizes growth being an agricultural community.
The triangle signifies the three (3) important factors in agriculture: man, land, and water.
SUN IN TRIANGLE :
Emphasizes the importance of sunshine to the town’s agricultural production.
BLUE, RED COLORS :
Red implies bravery while blue represents justice and nobility.
LETTER “T” :
Stands for “Tomas” the name of the two (2) prominent pioneers of the town after whom Sto. Tomas was named.