A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Assuming the data to be pasted is in the active worksheet with headings (not to be copied) in row 1 the destination worksheet is called "MonthlyData"
Sub AppendToMonthlyData()
Dim rLast As Range
Set rLast = ThisWorkbook.Sheets("MonthlyData").Cells(Rows.Count,1).End(xlUp)
With Range("A1").CurrentRegion
.Offset(1).Resize(.Rows.Count-1).Copy
rLast.Offset(1).PasteSpecial xlAll
rLast.Cells(1,"O").Resize(.Rows.Count,9).FillDown ' formulas in 9 columns O to W
End With
End Sub