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

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{{Documentation/MasterTOC
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|bookid=1234'''
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|booktitle=<div style="padding: 8px; font-size: 140%; font-weight: bold; background-color: #9BC0F5;">CALC FUNCTIONS</div>
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|ShowParttitle=block|parttitle=[[Documentation/How_Tos/Calc:_Financial_functions|<div style="font-size: 140%;">Financial Functions]]
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|ShowNextPage=block|NextPage=Documentation/How_Tos/Calc:_DURATION_function
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|ShowPrevPage=block|PrevPage=Documentation/How_Tos/Calc:_ACCRINTM_function
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|ShowPrevPart=block|PrevPart=Documentation/How_Tos/Calc:_Date_%26_Time_functions
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|toccontent= <div style="padding: 4px; font-size: 130%; font-weight: hidden; background-color:#DCE9FC;">FUNCTIONS</div>
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<div style="font-size: 140%; border-style: outset outset outset none; border-color:#DCE9FC;">Depreciation</div>
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* [[Documentation/How_Tos/Calc:_AMORDEGRC_function|<div style="font-size: 120%;">Amordegrc]]
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* [[Documentation/How_Tos/Calc:_AMORLINC_function|<div style="font-size: 120%;">Amorlinc]]
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* [[Documentation/How_Tos/Calc:_DB_function|<div style="font-size: 120%;">Db]]
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* [[Documentation/How_Tos/Calc:_DDB_function|<div style="font-size: 120%;">Ddb]]
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* [[Documentation/How_Tos/Calc:_SLN_function|<div style="font-size: 120%;">Sln]]
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* [[Documentation/How_Tos/Calc:_SYD_function|<div style="font-size: 120%;">Syd]]
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* [[Documentation/How_Tos/Calc:_VDB_function|<div style="font-size: 120%;">Vdb]]
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<div style="font-size: 140%; border-style: outset outset outset none; border-color:#DCE9FC;">Payment Streams, Annuities, Loans</div>
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* [[Documentation/How_Tos/Calc:_CUMIPMT_function|<div style="font-size: 120%;">Cumipmt]]
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* [[Documentation/How_Tos/Calc:_CUMIPMT_ADD_function|<div style="font-size: 120%;">Cumipmt Add]]
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* [[Documentation/How_Tos/Calc:_CUMPRINC_function|<div style="font-size: 120%;">Cumprinc]]
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* [[Documentation/How_Tos/Calc:_CUMPRINC_ADD_function|<div style="font-size: 120%;">Cumpinc Add]]
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* [[Documentation/How_Tos/Calc:_FV_function|<div style="font-size: 120%;">Fv]]
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* [[Documentation/How_Tos/Calc:_FVSCHEDULE_function|<div style="font-size: 120%;">Fvschedule]]
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* [[Documentation/How_Tos/Calc:_IPMT_function|<div style="font-size: 120%;">Ipmt]]
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* [[Documentation/How_Tos/Calc:_IRR_function|<div style="font-size: 120%;">Irr]]
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* [[Documentation/How_Tos/Calc:_ISPMT_function|<div style="font-size: 120%;">Ispmt]]
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* [[Documentation/How_Tos/Calc:_MIRR_function|<div style="font-size: 120%;">Mirr]]
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* [[Documentation/How_Tos/Calc:_NPER_function|<div style="font-size: 120%;">Nper]]
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* [[Documentation/How_Tos/Calc:_NPV_function|<div style="font-size: 120%;">Npv]]
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* [[Documentation/How_Tos/Calc:_PMT_function|<div style="font-size: 120%;">Pmt]]
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* [[Documentation/How_Tos/Calc:_PPMT_function|<div style="font-size: 120%;">Ppmt]]
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* [[Documentation/How_Tos/Calc:_PV_function|<div style="font-size: 120%;">Pv]]
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* [[Documentation/How_Tos/Calc:_RATE_function|<div style="font-size: 120%;">Rate]]
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* [[Documentation/How_Tos/Calc:_RRI_function|<div style="font-size: 120%;">Rri]]
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* [[Documentation/How_Tos/Calc:_XIRR_function|<div style="font-size: 120%;">Xirr]]
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* [[Documentation/How_Tos/Calc:_XNPV_function|<div style="font-size: 120%;">Xnpv]]
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<div style="font-size: 140%; border-style: outset outset outset none; border-color:#DCE9FC;">Securities</div>
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* [[Documentation/How_Tos/Calc:_ACCRINT_function|<div style="font-size: 120%;">Accrint]]
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* [[Documentation/How_Tos/Calc:_ACCRINTM_function|<div style="font-size: 120%;">Accrintm]]
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* [[Documentation/How_Tos/Calc:_DISC_function|<div style="font-size: 120%; border-style: double; border-color:#778899;">Disc]]
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* [[Documentation/How_Tos/Calc:_DURATION_function|<div style="font-size: 120%;">Duration]]
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* [[Documentation/How_Tos/Calc:_DURATION_ADD_function|<div style="font-size: 120%;">Duration Add]]
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* [[Documentation/How_Tos/Calc:_EFFECTIVE_function|<div style="font-size: 120%;">Effective]]
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* [[Documentation/How_Tos/Calc:_EFFECT_ADD_function|<div style="font-size: 120%;">Effect Add]]
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* [[Documentation/How_Tos/Calc:_INTRATE_function|<div style="font-size: 120%;">Intrate]]
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* [[Documentation/How_Tos/Calc:_MDURATION_function|<div style="font-size: 120%;">Mduration]]
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* [[Documentation/How_Tos/Calc:_DURATION_ADD_function|<div style="font-size: 120%;">Duration Add]]
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* [[Documentation/How_Tos/Calc:_NOMINAL_function|<div style="font-size: 120%;">Nominal]]
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* [[Documentation/How_Tos/Calc:_NOMINAL_ADD_function|<div style="font-size: 120%;">Nominal Add]]
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* [[Documentation/How_Tos/Calc:_ODDFPRICE_function|<div style="font-size: 120%;">Oddfprice]]
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* [[Documentation/How_Tos/Calc:_ODDFYIELD_function|<div style="font-size: 120%;">Oddfyield]]
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<div style="font-size: 140%; border-style: outset outset outset none; border-color:#DCE9FC;">Coupons</div>
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* [[Documentation/How_Tos/Calc:_COUPDAYBS_function|<div style="font-size: 120%;">Coupdaybs]]
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* [[Documentation/How_Tos/Calc:_COUPDAYS_function|<div style="font-size: 120%;">Coupdays]]
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* [[Documentation/How_Tos/Calc:_COUPDAYSNC_function|<div style="font-size: 120%;">Coupdaysnc]]
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* [[Documentation/How_Tos/Calc:_COUPNCD_function|<div style="font-size: 120%;">Coupncd]]
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* [[Documentation/How_Tos/Calc:_COUPNUM_function|<div style="font-size: 120%;">Coupnum]]
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* [[Documentation/How_Tos/Calc:_COUPPCD_function|<div style="font-size: 120%;">Couppcd]]
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<div style="font-size: 140%; border-style: outset outset outset none; border-color:#DCE9FC;">Miscellaneous</div>
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* [[Documentation/How_Tos/Calc:_DOLLARDE_function|<div style="font-size: 120%;">Coupdaybs]]
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* [[Documentation/How_Tos/Calc:_DOLLARFR_function|<div style="font-size: 120%;">Coupdays]]
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}}__TOC__
  
 
== DISC ==
 
== DISC ==

Revision as of 02:18, 1 June 2013


DISC

Returns the discount rate of a security.

This function is only available if the Analysis AddIn is installed.

Syntax:

DISC(settlementdate; maturitydate; price; redemptionvalue; basis)

settlementdate: the settlement (purchase) date of the security.
maturitydate: the maturity (redemption) date of the security.
price: the price of the security.
redemptionvalue: the redemption value of the security.
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


DISC calculates the discount rate using this formula:
(redemptionvalue - price) / (redemptionvalue * YEARFRAC(settlementdate; maturitydate; basis))

Example:

DISC("2007-12-21"; "2008-02-15"; 98.9; 100; 1)

returns approximately 0.072, a discount rate of around 7.2%.

Issues:

  • Calc follows Excel's apparent use of YEARFRAC in calculating DISC. Both Excel and Calc calculate YEARFRAC incorrectly in certain circumstances, and these (small) errors are propagated to DISC.
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