Returns the cumulative principal paid on a loan between start_period and end_period.

If this function is not available, and returns the #NAME? error, install and load the Analysis ToolPak add-in.


  1. On the Tools menu, click Add-Ins.
  2. In the Add-Ins available list, select the Analysis ToolPak box, and then click OK.
  3. If necessary, follow the instructions in the setup program.



Rate     is the interest rate.

Nper     is the total number of payment periods.

Pv     is the present value.

Start_period     is the first period in the calculation. Payment periods are numbered beginning with 1.

End_period     is the last period in the calculation.

Type     is the timing of the payment.

Type Timing
0 (zero) Payment at the end of the period
1 Payment at the beginning of the period


  • Make sure that you are consistent about the units you use for specifying rate and nper. If you make monthly payments on a four-year loan at an annual interest rate of 12 percent, use 12%/12 for rate and 4*12 for nper. If you make annual payments on the same loan, use 12% for rate and 4 for nper.
  • Nper, start_period, end_period, and type are truncated to integers.
  • If rate ≤ 0, nper ≤ 0, or pv ≤ 0, CUMPRINC returns the #NUM! error value.
  • If start_period < 1, end_period < 1, or start_period > end_period, CUMPRINC returns the #NUM! error value.
  • If type is any number other than 0 or 1, CUMPRINC returns the #NUM! error value.


The example may be easier to understand if you copy it to a blank worksheet.

ShowHow to copy an example

  1. Create a blank workbook or worksheet.
  2. Select the example in the Help topic.

 Note   Do not select the row or column headers.

Selecting an example from Help

Selecting an example from Help
  1. Press CTRL+C.
  2. In the worksheet, select cell A1, and press CTRL+V.
  3. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
Data Description
9.00% Interest rate per annum
30 Term in years
125,000 Present value
Formula Description (Result)
=CUMPRINC(A2/12,A3*12,A4,13,24,0) The total principal paid in the second year of payments, periods 13 through 24 (-934.1071)
=CUMPRINC(A2/12,A3*12,A4,1,1,0) The principal paid in a single payment in the first month (-68.27827)

 Note   The interest rate is divided by 12 to get a monthly rate. The years the money is paid out is multiplied by 12 to get the number of payments.

Applies to:
Excel 2003