In the late 1930s, the first independent Arab banks in Palestine, the Arab Bank and the Arab Agricultural Bank, sued customers who had defaulted on loans in an attempt to maintain solvency. Their indebted customers, unable to pay, fought back to prevent their lands from being foreclosed and sold to Zionist buyers. Each party claimed that its position was consistent with, indeed essential to, the anti-Zionist nationalist cause. The story of these pioneering Arab banks and their legal battles with their customers in the wake of the 1936-1939 revolt provides insight into Arab financial life in Mandate Palestine. It reveals the banks’ struggles to survive; complicates notions of Arab-Palestinian landlessness and indebtedness; and argues that political and economic exigencies, not reductive notions of collaboration or patriotism, produced the banks’ antagonistic relationship with their customers, whereby the survival of one came at the expense of the other.