Let's take your original line, as an example:
For E the formula I am using is: =IF(B1=0,TODAY()-$A$1,B1-$A$1)

What I meant by the indicative:
=IF($A$1="","",<yourformula)

was to apply it like this:
=IF($A$1="","",IF(B1=0,TODAY()-$A$1,B1-$A$1))
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Max
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xdemechanik
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"Serendipity" wrote:
I tried this with no luck.
=IF($T17="","",(V17=0,TODAY()-$T17,V17-$T17))
and
=IF($T17="","",V17=0,TODAY()-$T17,V17-$T17)

The formula that works except for the wrong answers is:

=IF(V17=0,TODAY()-$T17,V17-$T17)

V17 = no date
T17 = no date or with a date

and the answer I am getting is 39679 or in that neck of the woods.

What did I do wrong?

Thanks