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COUPDAYBS
The COUPDAYBS function returns the number of days between the beginning of the coupon period in which settlement occurs and the settlement date.
COUPDAYBS(settle, maturity, frequency, days-basis)
settle: A date/time value or date string representing the trade settlement date, usually one or more days after the trade date.
maturity: A date/time value or date string representing the date when the security matures. maturity must be after the date specified for settle.
frequency: A modal value specifying the number of coupon payments each year.
annual (1): One payment per year.
semiannual (2): Two payments per year.
quarterly (4): Four payments per year.
days-basis: An optional modal value specifying the number of days per month and days per year (days-basis convention) used in the calculations.
30/360 (0 or omitted): 30 days in a month, 360 days in a year, using the NASD method for dates falling on the 31st of a month.
actual/actual (1): Actual days in each month, actual days in each year.
actual/360 (2): Actual days in each month, 360 days in a year.
actual/365 (3): Actual days in each month, 365 days in a year.
30E/360 (4): 30 days in a month, 360 days in a year, using the European method for dates falling on the 31st of a month.
Example |
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Suppose you are considering the purchase of a hypothetical security. The purchase will settle on 2 April 2010 (settle), the bond matures on 31 December 2015 (maturity), and pays interest quarterly (frequency) on an actual calendar days basis (days-basis). =COUPDAYBS("2/4/2010", "31/12/2015", 4, 1) returns 2, because there are 2 days between the last coupon payment date of 31 March 2010 and the settlement date of 2 April 2010. This would be the number of days included in the computation of the accrued interest that would be added to the bond’s purchase price. |