The annuitycalcuations from francose

annuitycalcuations's Introduction

Calcuating present value

Assuming our user would like to know the downpayment amount with provided kwargs below;

Logic

terms, period and interest amount rate. Price - (presentValue* _N _ Repay Amount ) = Down payment

Calculating the future value

Assuming our user pays at the end of the given period, so our program should accumulate the value with gthe iven interest rate;

Logic

Accumulated Down payment(1+i)**N = Accumulated Price(1+i)**N - (AccumulatedValue*_N _ Repay Amount)

Calculating The Down Payment with Given Time Value

Assuming our user wants to calculate the downpayment with the given period of time

Logic

Accumulated Down payment = Accumulated Price ** T -(presentValue * Repay Amount ) ** T- (AccumulatedValue * Repay Amount)**-(N+T) / (1+i)**T

'''
Present Value method takes 5 parameters as intergers and returns downpayment amount
'''
presentValue = PresentValue(
    InterestRate, effectiveInterestTerms, fixedPeriod, repayAmount, price)

'''
Accumulated Value method takes 5 parameters as intergers and returns downpayment amount (future value)
'''
accumulatedValue = AccumulatedValue(
    InterestRate, effectiveInterestTerms, fixedPeriod, repayAmount, price)


'''
Calculate Given Time method takes 5 parameters as intergers and returns downpayment amount at any given time.
'''
calculateGivenTime = CalculateGivenTime(
    InterestRate, effectiveInterestTerms, fixedPeriod, repayAmount, price)

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