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# Financial functions

## Simple financial functions

`fv`(rate, nper, pmt, pv[, when]) | Compute the future value.
`pv`(rate, nper, pmt[, fv, when]) | Compute the present value.
`npv`(rate, values) | Returns the NPV (Net Present Value) of a cash flow series.
`pmt`(rate, nper, pv[, fv, when]) | Compute the payment against loan principal plus interest.
`ppmt`(rate, per, nper, pv[, fv, when]) | Compute the payment against loan principal.
`ipmt`(rate, per, nper, pv[, fv, when]) | Compute the interest portion of a payment.
`irr`(values) | Return the Internal Rate of Return (IRR).
`mirr`(values, finance_rate, reinvest_rate) | Modified internal rate of return.
`nper`(rate, pmt, pv[, fv, when]) | Compute the number of periodic payments.
`rate`(nper, pmt, pv, fv[, when, guess, tol, ...]) | Compute the rate of interest per period.

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