Toft was the first to add aluminous shale, or fireclay, a clay that can withstand high temperatures, to the paste for his earthenware. His work is characterized by restrained use of colour and unsophisticated, frequently amusing decoration. Toft ware bears designs in shades of red and brown, with small white dots adding liveliness. His themes include portraits of royalty, coats of arms, and emblems. His signature often appears on the wares. Toft's large plates and oven dishes are considered outstanding works of art. He also produced porringers, bowls, jars, cups, and candlesticks.

Several other Staffordshire potters working during the same period produced works showing the influence of Toft. This group includes Ralph Toft, working in Staffordshire from 1670 to 1680, who may or may not have been related to Thomas Toft.