Iwak subsistence technology ranges from the intensive type of wet rice agriculture to slash-and-burn cultivation of both grain and root crops.  This is a manifestation of the culture of the dominant tribes around them.  Significantly, however, taro is being cultivated; it is the preferred staple and ritually most prized.  Recently, the sweet potato has been supplanting taro in the Iwak's daily diet in most areas but indicatively, taro is still irreplaceable for ritual purposes.

The market sphere of Iwak produce is concentrated in handicraft manufacture.  They are sold at outlets specifically at the town of Santa Fe, Nueva Viscaya, which is at the juncture of the Cordillera and Caraballo mountains.  This production is limited into two kinds: basket and broom making.  Basketry technique has three classes Kabang - all purpose back basket, Gipias - small shallow tray used during meal time,  and Dakilan a large flat tray mostly used during rituals.
 

SOURCE: Jesus Peralta, "Iwak"

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