Who created the concept of "present value"?

Answer 1

There is no single person who can clearly be credited with inventing the concept of present value.

The underlying idea—that money available today is worth more than the same amount received in the future—developed alongside lending, interest, and commercial mathematics over many centuries.

One important early figure was Leonardo of Pisa (Fibonacci). In his 1202 work Liber Abaci, he included mathematical problems involving the value of money at different points in time.

Later, mathematicians developed increasingly sophisticated methods for compound interest, annuities, and discounting. By the 17th and 18th centuries, present-value calculations were well established in areas such as loans, annuities, and insurance.

Therefore, it is more accurate to say that present value evolved gradually from the mathematics of interest and discounting rather than being invented by one individual. Fibonacci is an important early contributor to the mathematical treatment of the time value of money, but he should not be described simply as the sole inventor of present value.