I wonder if some one can help me solve the folowing...

I keep getting this error message "The specified formula connot be entered because it uses more levels of nesting than are allowed"

=IF(AB5="","",IF((AB5=0),0,IF((AB5<=8000),0.28,IF((AB5<=9000),0.26,IF((AB5<=10000),0.255,IF((AB5<=11000),0.24,IF((AB5<=12000),0.2375,IF((AB5<=13000),0.235,IF((AB5<=14000),0.23,IF((AB5<=15000),0.2275,IF((AB5<=16000),0.225,IF((AB5<=17000),0.2225,IF((AB5<=18000),0.22,IF((AB5<=19000),0.2175,IF((AB5<=25000),0.215,IF((AB5<=30000),0.21,IF((AB5<=50000),0.205)))))))))))))))))

It's basically a labor cost expected total based on sales.

any advise would be appreciated.

-Sam.