SI %

i (effective interest rate)

i (effective interest rate) is calculated using Newton’s Method.

PV + Α σ 307 + σ FV = 0

To I % from i (effective interest rate)

 

i 100 .................................

(P/Y = C/Y = 1)

 

 

P/Y

 

 

 

I% = {{(1+ i )C/Y

...–1}C/Y 100

(Other than those above)

n............

number of compound periods

FV .........

future value

I% .........

annual interest rate

P/Y ........

installment periods per year

PV.........

present value

C/Y........

compounding periods per year

307......

payment

 

 

• A deposit is indicated by a plus sign (+), while a withdrawal is indicated by a minus sign (–).

Press (CMPD) from the Financial 1 screen to display the following input screen for compound interest.

(CMPD)

n........... number of compound periods

I% ........ annual interest rate

PV ........ present value (loan amount in case of loan; principal in case of savings)

307..... payment for each installment (payment in case of loan; deposit in case of savings)

FV ........ future value (unpaid balance in case of loan; principal plus interest in case of

savings)

P/Y ....... installment periods per year

C/Y ....... compounding periods per year

Important!

Inputting Values

A period (n) is expressed as a positive value. Either the present value (PV) or future value (FV) is positive, while the other (PV or FV) is negative.

Precision

This calculator performs interest calculations using Newton’s Method, which produces approximate values whose precision can be affected by various calculation conditions. Because of this, interest calculation results produced by this calculator should be used keeping the above limitation in mind or the results should be verified.

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