Money.Financial.present_value

You're seeing just the function present_value, go back to Money.Financial module for more information.

present_value(flows, interest_rate)

Specs

present_value([{integer(), Money.t()}], number()) :: Money.t()

Calculates the present value for a list of cash flows and an interest rate.

flows is a list of tuples representing a cash flow. Each flow is represented as a tuple of the form {period, %Money{}}
interest_rate is a float representation of an interest rate. For example, 12% would be represented as 0.12

Example

iex> Money.Financial.present_value([{4, Money.new(:USD, 10000)}, {5, Money.new(:USD, 10000)}, {6, Money.new(:USD, 10000)}], 0.13)
#Money<:USD, 16363.97191111964880256655144>

iex> Money.Financial.present_value [{0, Money.new(:USD, -1000)},{1, Money.new(:USD, -4000)}], 0.1
#Money<:USD, -4636.363636363636363636363636>

present_value(money, interest_rate, periods)

Specs

present_value(Money.t(), number(), number()) :: Money.t()

Calculates the present value for future value, an interest rate and a number of periods

future_value is a %Money{} representation of the future value
interest_rate is a float representation of an interest rate. For example, 12% would be represented as 0.12
periods in an integer number of periods

Examples

iex> Money.Financial.present_value Money.new(:USD, 100), 0.08, 2
#Money<:USD, 85.73388203017832647462277092>

iex> Money.Financial.present_value Money.new(:USD, 1000), 0.10, 20
#Money<:USD, 148.6436280241436864020760472>