Difference between revisions of "Documentation/How Tos/Calc: PRICEDISC function"

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:  returns approximately <tt>'''97.63'''</tt>. You purchase and settle a bond on 15 February 2008; the bond will mature on 30 November 2008, yielding its face value of $1000. With a discount rate of 3% per annum, the value of the bond is $976.30 using the basis 1 date system.
 
:  returns approximately <tt>'''97.63'''</tt>. You purchase and settle a bond on 15 February 2008; the bond will mature on 30 November 2008, yielding its face value of $1000. With a discount rate of 3% per annum, the value of the bond is $976.30 using the basis 1 date system.
  
=== See also: ===
+
{{Documentation/SeeAlso|
[[Documentation/How_Tos/Calc: YIELDDISC function|'''YIELDDISC''']],
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* [[Documentation/How_Tos/Calc: YIELDDISC function|YIELDDISC]],
[[Documentation/How_Tos/Calc: YIELD function|'''YIELD''']],
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* [[Documentation/How_Tos/Calc: YIELD function|YIELD]],
[[Documentation/How_Tos/Calc: PRICE function|'''PRICE''']],
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* [[Documentation/How_Tos/Calc: PRICE function|PRICE]],
[[Documentation/How_Tos/Calc: PRICEMAT function|'''PRICEMAT''']],
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* [[Documentation/How_Tos/Calc: PRICEMAT function|PRICEMAT]],
[[Documentation/How_Tos/Calc: DISC function|'''DISC''']]
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* [[Documentation/How_Tos/Calc: DISC function|DISC]]
  
'''[[Documentation/How_Tos/Calc: Derivation of Financial Formulas|Derivation of Financial Formulas]]'''
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* [[Documentation/How_Tos/Calc: Derivation of Financial Formulas|Derivation of Financial Formulas]]'''
  
[[Documentation/How_Tos/Calc: Date & Time functions#Financial date systems|'''Financial date systems''']]
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* [[Documentation/How_Tos/Calc: Date & Time functions#Financial date systems|Financial date systems]]
  
[[Documentation/How_Tos/Calc: Financial functions|'''Financial functions''']]
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* [[Documentation/How_Tos/Calc: Financial functions|Financial functions]]
  
[[Documentation/How_Tos/Calc: Functions listed alphabetically|'''Functions listed alphabetically''']],
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* [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]]
[[Documentation/How_Tos/Calc: Functions listed by category|'''Functions listed by category''']]
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* [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}}
  
 
=== Issues: ===
 
=== Issues: ===

Revision as of 14:12, 25 February 2009


PRICEDISC

Calculates a price for a non-interest paying discounted bond.

Syntax:

PRICEDISC(settlementdate; maturitydate; discountrate; redemptionvalue; basis)

settlementdate: the settlement (purchase) date of the bond.
maturitydate: the maturity (redemption) date of the bond.
discountrate: the (annual) discount rate of the bond.
redemptionvalue: the redemption value of the bond, per 100 par value.
basis: is the calendar system to use. Defaults to 0 if omitted.
0 - US method (NASD), 12 months of 30 days each
1 - Actual number of days in months, actual number of days in year
2 - Actual number of days in month, year has 360 days
3 - Actual number of days in month, year has 365 days
4 - European method, 12 months of 30 days each


This function calculates a price (or value), per 100 currency units par value, for a bond which pays no interest (a 'pure discount instrument' or 'discounted zero coupon bond').
PRICEDISC returns:
redemptionvalue - (redemptionvalue * discountrate * days_to_maturity / days_in_year).

Example:

PRICEDISC("2008-02-15"; "2008-11-30"; 3%; 100; 1)

returns approximately 97.63. You purchase and settle a bond on 15 February 2008; the bond will mature on 30 November 2008, yielding its face value of $1000. With a discount rate of 3% per annum, the value of the bond is $976.30 using the basis 1 date system.

Template:Documentation/SeeAlso

Issues:

  • There are (rare) circumstances when the results from Calc and Excel differ. The formula given has 'days_in_year', which is not a specific enough definition with basis 1, when the range of years may include leap years.
  • The formula uses takes no account of the compounding of interest. If you are using this function to calculate a bond value, and the time to maturity is over a year, choose your required discount rate with appropriate care.
  • The price is calculated as at the date of settlement (when the money changes hands). The contract to buy the bond may predate that (for example by 3 days).
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