Tithes were a form of tax raised to support the Church which had been present in Ireland since the 12th century. After the establishment of a Protestant Church, Catholics had to pay twice the amount of tax
The 1823 Tithe Composition (Ireland) Act extended the payment of tithes to pastureland and tillage land, making it a monetary charge which had to be paid twice a year by a majority of Irish farmers
The new Act was greatly resented and seen as an example of British oppression, particularly as the tithe had been extended to pasture farmers as well. This encouraged a desire to resist the payment