Any suggestion on this would be greatly appreciated.
I thought there was a way to overcome the limit of 7 nested IFs in the one
formula.

My worksheet is setup like this:
Column A hold dates for an entire year. The dates are entered in the
following format: 1-2-07
In Column B I need to setup an IF formula that checks if the month is either
Jan, Feb, March and so on to December.
If the month is Jan return "X", if the month is Feb return "Y", if the month
is March return "Z", and so on to December.

In Column B the formula works fine with 7 IFs

=IF(MONTH(B10)=1,"Jan",
IF(MONTH(B10)=2,"Feb",
IF(MONTH(B10)=3,"March",
IF(MONTH(B10)=4,"April",
IF(MONTH(B10)=5,"May",
IF(MONTH(B10)=6,"June",
IF(MONTH(B10)=7,"July",False)))))))

Below is the formula I have setup for 11 Ifs.
I use the IF formula above, then I position the text cursor at the end of
the formula (outside the last closing parenthesis), then I select IF in the
Functions dropdown list located above A; as soon as I do this Excel
automatically inserts a + sign. I leave the + sign there then enter another
4 Ifs.

=IF(MONTH(B10)=1,"X,
IF(MONTH(B10)=2,"Y",
IF(MONTH(B10)=3,"Z",
IF(MONTH(B10)=4,"XX",
IF(MONTH(B10)=5,"YY",
IF(MONTH(B10)=6,"ZZ",
IF(MONTH(B10)=7,"XXX",False)))))))+
IF(MONTH(B10)=8,"YYY",
IF(MONTH(B10)=9,"ZZZ",
IF(MONTH(B10)=10,"XXXX",
IF(MONTH(B10)=11,"YYYY","ZZZZ"))))

When I press Enter Excel displays an error message telling me there is an
error in the formula.

Would anybody know if this is feasible?

Thank you very much in advance.

Pc.