Help with Excel (office 2007)

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21 Apr 2010
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hi folks
I'm trying to create an invoice document for work, and I need the assistance of someone with some formula skills...

Basically there's four columns in the invoice spreadsheet: Item Description, Unit Cost, Quantity & Sub-Total.
At the bottom of the sub-total column there are three boxes; net-total, VAT & TOTAL. I want to preserve this layout.

What I am trying to do is write formulae for the net-total, VAT & TOTAL boxes that do not break when you add or remove rows; I want the spreadsheet to be able to work regardless of how many items (one to a row) are being invoiced.

Column D is the sub-total column, so presumably for the Net Total Box the formula should be something like SUM(D2 : DX) where X=The-box-above-this-one, but I don't know the correct notation for this in Excel...
If I could just get that manner of cell reference sorted I could adapt it for the two further boxes below; VAT & TOTAL



Well I hope that makes sense enough for someone to be able to give me some advice :)

This may not even be possible, I've looked at a lot of Invoice Templates on the MS Office website, and none of them have 'smart' summing formulae like this, they are all based on specific cell references: i.e. Sum(D2 : D9)

Cheers,
gooner
 
Just put the cell reference for the sum to finish in the cell above the net total row and make sure when you insert rows you do it above this cell and the area will automatically expand.
 
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