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Financial
The Excel DISC function returns the discount rate of a security. Settlement and maturity are dates wrap them in DATE() so Excel reads them correctly..
Quick answer:
=DISC(DATE(2026,1,1), DATE(2026,7,1), 97, 100) // implied discount rate
Syntax
=DISC(settlement, maturity, pr, redemption, [basis])
| Argument | Description | |
|---|---|---|
settlement | Required | Settlement date. |
maturity | Required | Maturity date. |
pr | Required | Price per $100. |
redemption | Required | Redemption value per $100. |
basis | Optional | Day-count basis. |
How to use it
DISC returns the discount rate of a security. Settlement and maturity are dates wrap them in DATE() so Excel reads them correctly..
=DISC(DATE(2026,1,1), DATE(2026,7,1), 97, 100) // implied discount rate
Try it: interactive demo
Live demo
This is the formula pattern DISC uses — copy it into Excel with your own numbers.
Result: computed in Excel
Practice workbook
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Frequently asked questions
How do I enter the dates?
Wrap settlement and maturity in DATE(year,month,day) so Excel reads real dates, not text.
Which Excel versions support it?
All modern versions.
Why might it return #NUM! or #VALUE!?
Out-of-range arguments (e.g. negative rate or settlement after maturity) give #NUM!; non-numeric inputs give #VALUE!.
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