Returns the interest payment for a given period for an investment based on periodic, constant payments and a constant interest rate. For a more complete description of the arguments in IPMT and for more information about annuity functions, see {PV}.
 | Rate | is the interest rate per period. |
| Per | is the period for which you want to find the interest and must be in the range 1 to nper. |
| Nper | is the total number of payment periods in an annuity. |
| Pv | is the present value, or the lump-sum amount that a series of future payments is worth right now. |
 | Fv | is the future value, or a cash balance you want to attain after the last payment is made. If fv is omitted, it is assumed to be 0 (the future value of a loan, for example, is 0). |
| Type | is the number 0 or 1 and indicates when payments are due. If type is omitted, it is assumed to be 0. |
