On Mon, 2006-02-20 at 20:44 -0500, Paul_B wrote:
> On Tue, 21 Feb 2006 12:02:13 +1100, Ross Johnson wrote:
>
> > On Mon, 2006-02-20 at 18:52 -0500, Paul_B wrote:
> >> On Sun, 19 Feb 2006 20:27:22 -0500, Paul_B wrote:
> >>
> >>> On Mon, 20 Feb 2006 09:31:28 +1100, Ross Johnson wrote:
> >>>
> >>>> On Sun, 2006-02-19 at 15:29 -0500, Paul_B wrote:
> >>>>> On Sun, 19 Feb 2006 10:59:58 -0600, Rod Engelsman wrote:
> >>>>>
> >>>>>> Paul_B wrote:
> >>>>>>
> >>>>>>>Is there any way to set up a multiple case logic test?
> >>>>>>>
> >>>>>>>Currently I have =IF(B27="";"";B27-(14.325+(E$25-70.35)*0.28)) as
> >>>>>>>a formula in a column of cells. It tests another column's cell,
> >>>>>>>if it's empty the result is null, otherwise a tax approximation
> >>>>>>>kicks in.
> >>>>>>>
> >>>>>>>However, I'd like to allow for a few tax brackets. To do so I'd
> >>>>>>>need to account for the null possibility plus three other
> >>>>>>>possible number ranges (as income increases, a different tax
> >>>>>>>formula should be invoked).
> >>>>>>>
> >>>>>>>Currently I don't see how this is possible.
> >>>>>>>
> >>>>>>>Thanks,
> >>>>>>>paul
> >>>>>>>
> >>>>>>>
> >>>>>> You can use nested IF() statements.
> >>>>>>
> >>>>>> =IF(B27="";"";IF(B27=.......
> >>>>>
> >>>>> Ahh. Ok, thanks. Hadn't thought of that. A case select command
> >>>>> would be nice, but this should do what I need.
> >>>>
> >>>> Have you tried using lookup tables for this kind of thing.
> >>>> Functions: LOOKUP, VLOOKUP etc in Help.
> >>>>
> >>>> I use them for this purpose in my own tax sheets and they work.
> >>>
> >>> That indeed looks like it would do it, as it amounts to a
> >>> powerful case select statement. Should be interesting working out
> >>> the details. Will get on this maybe tomorrow.
> >>>
> >>> Thanks much,
> >>> Paul
> >>
> >> Ok, I'm trying to set this up.
> >>
> >> Is there any way to use a function's return as part of a cell
> >> address?
> >>
> >> For instance:
> >>
> >> =MATCH($E$26;$H$3:$H$8)
> >>
> >> finds the row in which the H column matches cell E26. but
> >>
> >> =G(MATCH($E$26;$H$3:$H$8))
> >>
> >> doesn't work. I want to find the row which contains the value
> >> searched for, and then use that number in the address of another
> >> value, here found under column G.
> >
> > Use something like =INDIRECT("G"&MATCH($E$26;$H$3:$H$8)+2)
> >
> > But LOOKUP does this for you. E.g.
> >
> > = LOOKUP($E$26;$H$3:$H$8;$G$3:$G$8)
>
>
> You definitely know your stuff, The INDIRECT formula is awesome,
> and you even caught the need for an offset of 2 in my MATCH
> formula.
>
> I was getting LOOKUP to return the row number, as does your
> formula above, but only because I set up column G to contain that
> data. But how then would I use the returned row number to specify
> which cells to poll for the tax data? That's where I'm stuck.
>
> Using the INDIRECT formula, I came up with
>
> =IF(B26="";"";B26-( INDIRECT("i"&MATCH($E$25;$H$3:$H$8)+2)
> +INDIRECT("j"&MATCH($E$25;$H$3:$H$8)+2)*($E$25-LOOKUP(E$25;$H$3:$H$8;$H$3:$H$8))))
>
> which successfully takes the income in B26 and then subtracts off
> the base tax and incremental tax bracket tax. But this is very
> unwieldy. If LOOKUP can do this directly, it would be a big
> improvement.
Hey. Compliments always work :)
I guess this has turned into a bit of a tutorial on lookup tables now.
I assume your tax brackets are structured the same as mine, i.e a table
like this (top left at cell H3):
0 9999 0 0 Tax free threshold
10000 19999 0 0.15 $0 plus $0.15 for each $ over $10000
20000 39999 1500 0.25
40000 59999 6500 0.30
60000 89999 9500 0.35
90000 20000 0.45 $20000 plus $0.45 for each $ over $90000
$90000 is the top threshold. If you don't have a tax-free threshold
where you are then you can see how the table would change.
The second column isn't actually needed in the formulae.
Tax:
=IF(B26<0;0;LOOKUP(B26;$H$3:$H$7;$J$3:$J$7)
+(B26-LOOKUP(B26;$H$3:$H$7;$J$3:$J$7))
*LOOKUP(B26;$H$3:$H$7;$K$3:$K$7))
Of course, the formula is a lot simpler if you store the base tax amount
for your income in another cell.
Base Tax:
B27 =LOOKUP(B26;$H$3:$H$7;$J$3:$J$7)
Tax:
=IF(B26<0;0;B27+(B26-B27)*LOOKUP(B26;$H$3:$H$7;$K$3:$K$7))
I give no warranty that these formulae won't get you a jail term :)
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