ISPMT Function in Excel: Interest on Equal-Principal Loans

⏱ 1 min readUpdated 28 September 2026

FinancialLevel: ExpertAvailable in: Excel 2007+

In this article
  1. Syntax
  2. Examples
  3. Example 1
  4. Related functions

ISPMT calculates interest for a loan where the principal is repaid in equal parts (not an EMI). Note the period argument starts at 0.

Syntax

=ISPMT(rate, per, nper, pv)
Argument What it means
per 0 for the first period.

Examples

Example 1

=-ISPMT(10%/12, 0, 12, 120000)

₹1,000 interest in month one when ₹10,000 of principal is repaid each month.

IPMT · CUMIPMT

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