What is the opposite of "paying by installments"? I'm looking for the proper financial term for paying in full in a single payment.
The opposite of paying by instalments is usually to pay in a lump sum.
A lump sum is a single payment of money, as opposed to a series of payments made over time (such as an annuity).
You may use the expression:
- to pay in one installment.
Lump sum payment. n.
A single sum of money that serves as complete payment.
A lump-sum payment is usually taken in lieu of recurring payments distributed over a period of time.
If you decide that you don't want to pay by installments, you can "pay in full."