FIFO using Excel Formula or VBA - excel

Question

Here is my "IN" List -
PN Qty Price
A 100 5
B 150 6
C 150 7
D 50 -9
E 100 5
F 5 9
G 20 6
I 5 7
J 15 7
J 30 10
K 100 10
K 50 10
A 20 8
Here is my "OUT" List -
PN Qty
A 120
B 10
C 110
D 60
E 100
J 20
J 10
Expected Results -
Manual Formula to calculate Price for PN = "A" = ((100*5)+(20*8))/120
PN Qty Price Total
A 120 5.5 660
B 10 6 60
C 110 7 770
D 60 -9 -540
E 100 5 500
J 20 7.75 155
J 10 10 100
I want to implement FIFO logic to calculate the Total Price in "OUT" List based on "Quantity" in "IN" List.

Answer 1

When you have tables like this, the outgoing button with following code:
Private Sub Outgoing_Click()
Dim pn As String
Dim ammout As Long
Dim current As Long
pn = InputBox("Which Item do you want to take out?")
ammount = InputBox("How Item do you want to take out?")
Dim cells As Long
Dim fifo As Double
counter = 1 //line where your table starts
current = 0
fifo = 0
Do Until IsEmpty(cells(counter, 13).Value Or current = ammount)
If cells(counter, 13).Value = pn Then
If cells(counter, 14).Value > (ammount - current) Then
fifo = fifo + (ammount - current) * cells(current, 15).value
current = ammount
Else
fifo = fifo + cells(counter, 14).Value * cells(counter, 15).Value
current = current + cells(counter, 14)
cells(counter, 14).Value = 0
End If
counter = counter + 1
Loop
fifo = fifo / ammount
End Sub
Should be work.
I did not match lie if you have enough in your current list and others so the validation part is missing.

Answer 2

your "Expected Results" doesn't match your "Manual Formula"
following this latter
Option Explicit
Sub main()
Dim cell As Range
Dim dictSum As Object
Dim dictRept As Object
Set dictSum = CreateObject("Scripting.Dictionary")
Set dictRept = CreateObject("Scripting.Dictionary")
With Worksheets("IN")
For Each cell In .Range("A2", .Cells(.Rows.Count, 1).End(xlUp))
dictSum(cell.Value) = dictSum(cell.Value) + cell.Offset(, 1).Value * cell.Offset(, 2).Value
dictRept(cell.Value) = dictRept(cell.Value) + cell.Offset(, 1).Value
Next
End With
With Worksheets("OUT")
For Each cell In .Range("A2", .Cells(.Rows.Count, 1).End(xlUp))
cell.Offset(, 2) = dictSum(cell.Value) / dictRept(cell.Value)
cell.Offset(, 3) = cell.Offset(, 1) * cell.Offset(, 2)
Next
End With
End Sub