What is an annuity with payments made at the end of each period?

An annuity with payments made at the end of each period is known as an ordinary annuity. In this type of financial arrangement, equal payments are made at the conclusion of each specified time interval, such as monthly or annually. This structure is commonly used in loans, mortgages, and retirement plans, where the timing of the payments affects the present value and future value calculations. The ordinary annuity contrasts with an annuity due, where payments are made at the beginning of each period.