In this article, we will learn How to use the DISC function in Excel.
What is the Discount rate for a security?
Discount for a security is the interest used to convert between future value and present value. A future value can be "discounted" by a given interest rate to determine the present value. The discount rate is calculated using the mathematical formula shown below.
Discount rate = ( 1 - pr / redemption ) * ( B / DSM )
Here pr is the price per $100 face value for the security. B is the number of days in a year, based on the selected basis method and DSM is the number of days between settlement and maturity. Learn how to calculate the discount rate using the DISC function in Excel.
DISC function in Excel
DISC function is a financial function which returns the discount rate as percentage using the terms for a bond or security. Below is detailed function syntax and arguments
DISC function syntax:
|=YIELD ( Settlement , Maturity, pr, redemption, [basis])|
settlement - Settlement date of security
Maturity - maturity date of security
pr - Price per $ 100 face value
redemption - redemption value
basis - [optional] Day count basis. Default is 0 and for see the table below.
|Basis||Day count basis|
|0||US (NASD) 30 / 360|
|1||actual / actual|
|2||actual / 360|
|3||actual / 365|
|4||European 30 / 360|
All of these might be confusing to understand. Let's understand this function using an example. Here we have some terms for the security stated as per required arguments and we need to calculate the discount rate for the security.
Use the formula:
Day count basis selected as US (NASD) 30 / 360
The function returns 0.04 as result, which means 4% in Excel. Change the format of the cell from General to Percentage to get the value in Percentage. Select the percentage from the format cell drop down list as shown below.
Selecting the Percentage, the 0.04 turns to 4% in cell as shown below.
As you can see, the same formula returns the same discount rate in percentage format. Learn more about the bond valuation formulas and related functions here at Exceltip.
Here are some observational notes using the DISC function shown below.
Hope this article about How to use the DISC function in Excel is explanatory. Find more articles on financial formulas here. If you liked our blogs, share it with your friends on Facebook. And also you can follow us on Twitter and Facebook. We would love to hear from you, do let us know how we can improve, complement or innovate our work and make it better for you. Write to us at firstname.lastname@example.org.
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