Overview

fv(rate, nper, pmt, pv[, when])	Compute the future value.
pmt(rate, nper, pv[, fv, when])	Compute the payment against loan principal plus interest.
nper(rate, pmt, pv[, fv, when])	Compute the number of periodic payments.
ipmt(rate, per, nper, pv[, fv, when])	Compute the interest portion of a payment.
ppmt(rate, per, nper, pv[, fv, when])	Compute the payment against loan principal.
pv(rate, nper, pmt[, fv, when])	Compute the present value.
rate(nper, pmt, pv, fv[, when, guess, tol, ...])	Compute the rate of interest per period.
irr(values[, guess, tol, maxiter])	Return the Internal Rate of Return (IRR).
npv(rate, values)	Returns the NPV (Net Present Value) of a cash flow series.
mirr(values, finance_rate, reinvest_rate)	Modified internal rate of return.
depreciate(cost, salvage, life)	Calculate the straight-line depreciation of an asset over time.
digits(cost, salvage_value, useful_life)	Compute the depreciation for an asset using the sum-of-years-digits method.
decline(cost, salvage_value, useful_life, rate)	Compute the accumulated depreciation for an asset using the declining balance method.
double(cost, salvage_value, useful_life, rate)	Compute the depreciation for an asset using the double declining balance method.
units(cost, salvage, ...)	Calculate the units-of-production depreciation and book value at the end of year t.