QMB (financial math)

P

present value

A or S

future value (after interest)

r

annual rate

t

time in years (360 days not 365)

m

compound frequency per year

i

interest or r/m

n

total periods (t x m)

R

regular repeating payment

simple interest rate

days, no exponents, no division, interest only on principal

compound interest

interest reinvested, compounded

future value

invested, worth X amount later

present value

present value, today, how much to deposit now, negative exponent

effective rate

effective rate, APY, comparing annual yield

future value of ordinary annuity

deposited monthly, END result, accumulated

amortization

car loan, house, finance rest, paid monthly

continuous compounding

compounded continuously

sinking fund payment

what payment needed to reach X

future value of annuity due

payment at beginning of each month/year, R outside brackets, minus R

present value of annuity

cash value of payout

amortization

house, cars, finance rest, equal monthly paymenrs