I found the answer on my own. Thanks anyway. All I had to do was create a
hidden column that contained the following formula and it worked.

=IF('Forestry Provided Info'!$B$14=5, G8=IRR(C9:C15))

"Mawaller" wrote:

The spreadsheet looks like this:

A B C
Income (Expense) 1 Cash Flow

This is repeated for 50 years. Column B contains only one number to
represent the year. CashFlow is brought in from another sheet in the workbook
titled "Profit Calcs". The range is C9:C59, C9 being the initial investment.
The Final Year is found on a worksheet called "Forestry Provided Information"
and is found in cell B14. As previously stated, I'm trying to keep the
flexibility of the workbook open and adaptable to calculate as much as 50
years. If you would like to see the actual workbook, let me know where to
send or post it.

"Fred Smith" wrote:

I understand what your issue is, but solutions are difficult to come up with if
you keep us guessing as to what your spreadsheet looks like.

Where is the cash flow information (ie, what range)?
Where is the final year (what cell and worksheet)?
What format is the year in -- two digits, four digits, or an Excel date?

--
Regards,
Fred


"Mawaller" wrote in message
...
That sounds pretty close to what I want to do but each calculation will have
to start with the initial investment which will be the first cell used. It
will then progress down a column until it reaches the final year which is
provided on another worksheet. My issue is that Excel continues to calculate
to the 50th year because I don't know how to tell it to stop where I want it
to.


"Fred Smith" wrote:

You should be able to do what you want with the Offset function. For example,
=irr(offset(b1:b50,30,0)) will do an IRR on the range B31:B50. 30 could be in
a
cell rather than hard coded into the formula.

--
Regards,
Fred


"Mawaller" wrote in message
...
Hello all!! Hopefully this will be an easy one. I have a sheet to calculate
IRR. The sheet holds 50 years of information. The workbook I'm using will
rarely require all 50 years worth of information. Is there a way to tell
Excel, depending on the value of another cell, to stop the IRR calculation
on
a particular year? The sheet automatically calculates all 50 years. But
most
of the time we just need 10 or 20 years included in the calculation. Any
help
will be greatly appreciated.