Moneychangers in Fausset's Bible Dictionary

Kollubistes and kermatistes, both denoting dealers in small coin (kollubos and kerma the profit money, 1 1/2d.). They set up tables in the court of the Gentiles, to supply at a profit foreign Jews with the Jewish half shekels (1 shillings, 3 pence) required for the yearly payment into the temple treasury, in exchange for foreign coin. The "exchangers" (Matthew 25:27), trapezitai, were bankers.