ACCRINT calculates the accrued interest for a security that pays periodic interest. @issue is the issue date of the security. @first_interest is the first interest date of the security. @settlement is the settlement date of the sequrity. The settlement date is always after the issue date (the date when the security is bought). @rate is the annual rate of the security and @par is the par value of the security. @frequency is the number of coupon payments per year. Allowed frequencies are: 1 = annual, 2 = semi, 4 = quarterly. @basis is the type of day counting system you want to use:
0 US 30/360
1 actual days/actual days
2 actual days/360
3 actual days/365
4 European 30/360
If @issue date, @first_interest date, or @settlement date is not valid, ACCRINT returns #NUM! error. The dates must be @issue < @first_interest < @settlement, or ACCRINT returns #NUM! error. If @rate <= 0 or @par <= 0 , ACCRINT returns #NUM! error. If @basis is omitted, US 30/360 is applied. If @basis < 0 or @basis > 4, ACCRINT returns #NUM! error. If @issue date is after @settlement date or they are the same, ACCRINT returns #NUM! error.