通过excel公式在列中列出每年，每月，每季度，每两周的日期间隔

Question

I have the table below.

In the first column, I placed the periods (or the number of instances; it works like an ID in this table). The table is named "LoanSchedule". $B$20 stores a date. In this case, I entered February 20, 2020. I have this formula in Column 2 to list the consecutive monthly date after $B$20. $B$18 stores the number of times payment is made in a year

=IF(AND([@[Payment Period]]<>"",$B$20<>"--"),IF($B$18=12,EOMONTH($B$20,ROW([@[Payment Period]])-ROW(LoanSchedule[[#Headers],[Payment Period]])-1)+DAY($B$20),"--"))

It works well if payment is monthly or $B$18 = 12. How can I modify the formula if Payment periods will be quarterly(4x year), yearly, or biweekly (26weeks), and list the corresponding months?

For example if I choose quarterly & $B$20 stays the same, the dates that will be displayed on the second column will be May 20, 2020; August 20, 2020, November 20, 2020, February 20, 2021, etc. if Biweekly, every 2 weeks. Thanks for any help.

Answer 1

You need to translate the entries in B18 (number of pmts per year), and the payment period, into the number of months or days to add to the original date.

I translated {1,4,12} using a lookup table with vlookup, handling 26 separately for the 14 day interval (2 weeks).

I chose this method because merely dividing 12/$B$18 would require a more complex formula should the result of the division not be an integer, since payments would then not be at monthly intervals

=IF($B$18=26,$B$20+14*[@[Payment Period]],
EDATE($B$20,VLOOKUP($B$18,{1,12;4,3;12,1},2,FALSE)*[@[Payment Period]]))

B18 = 12

B18=4

B18=26