pro rata – Proportionally; for a Proportion
Proportionally; for a proportion.
In a situation where several debtors are each liable for her/his own share or proportion only, they are said to be bound “pro rata”. Term ‘pro rata’ is contrasted with ‘in solidum’ – where several debtors are each liable for the whole debt.
An example of both phrases may be found in the liabilty of partners; each is liable “in solidum” for the debts of the partnership in relation to creditors, but each is liable only “pro rata” in relation to between themselves.