Financial

COUPNUM Function in Excel

Returns the number of coupons payable between the settlement date and maturity date.

Syntax

  • =COUPNUM(settlement, maturity, frequency, [basis])

Arguments

  • settlement (required): Settlement date
  • maturity (required): Maturity date
  • frequency (required): Payments per year (1, 2, or 4)
  • basis (optional): Day count basis

Examples

  • =COUPNUM("1/25/2024", "11/15/2027", 2) - Number of coupons - Result: 8

COUPNUM modeling tips

  • Align rate and period units (annual rate ÷ 12 for monthly models).
  • Use consistent cash-flow signs (outflows negative, inflows positive).
  • Hub: [Financial functions guide](/guides/excel-financial-functions-guide/).

Common errors

  • #NUM! if dates invalid

Use cases

  • Bond analysis
  • Cash flow count
  • Fixed income

Frequently asked questions

  • What is the COUPNUM function in Excel? COUPNUM returns the number of coupons payable between the settlement date and maturity date. The syntax is =COUPNUM(settlement, maturity, frequency, [basis]). Typical use cases include bond analysis, cash flow count, fixed income.
  • How do I use the COUPNUM function? To use COUPNUM, type =COUPNUM( in a cell and provide the required arguments. Excel will show you the syntax and parameter hints as you type. Make sure to close the parentheses and press Enter to execute the function.
  • Why is COUPNUM not working in my Excel? Common issues with COUPNUM include #NUM! if dates invalid. Start by checking the syntax =COUPNUM(settlement, maturity, frequency, [basis]), then verify each referenced cell or range.

Editorial review

  • Reviewed by Excel.Directory Editorial Team. Updated May 2026.