module Finance::Saving

Overview

Collection of formulas used for a fixed rate saving.

finance/saving.cr

#savings_for_n_years(amount : Float64, rate : Float64, duration : Int32)
Returns the total savings given a fixed amount of savings per month, a yearly rate and the duration in years.
#savings_for_one_year(amount : Float64, rate : Float64)
Returns the total savings of a year given a fixed amount of savings per month and a yearly rate.
#yearly_interests(capital : Float64, rate : Float64, monthly_savings = 0.0)
Returns the total interests for a single year given an existing capital, a yearly rate and a fixed amount of savings per month.

def savings_for_n_years(amount : Float64, rate : Float64, duration : Int32) #

Returns the total savings given a fixed amount of savings per month, a yearly rate and the duration in years.

Finance::Saving.savings_for_n_years(100.0, 0.05, 2) # => 2526.13

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def savings_for_one_year(amount : Float64, rate : Float64) #

Returns the total savings of a year given a fixed amount of savings per month and a yearly rate.

Finance::Saving.savings_for_one_year(100.0, 0.05) # => 1232.26

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def yearly_interests(capital : Float64, rate : Float64, monthly_savings = 0.0) #

Returns the total interests for a single year given an existing capital, a yearly rate and a fixed amount of savings per month.

Finance::Saving.yearly_interests(100.0, 0.05, 100.0) # => 37.26

[View source]