Hi
=IF(OR([@CATEGORY]="INCOME","N/A",IF([@CATEGORY]="PROFIT","N/A",IF([@ITEM]="MILEAGE",MAX(0,MIN(10000-SUM(I$5:I$5),I6,10000))*0.45+(I6-MAX(0,MIN(10000-SUM(I$5:I$5),I6,10000)))*0.36,""))))

I have the above which doesnt work I have pasted two arguments together, they both work independently as
=IF([@CATEGORY]="INCOME","N/A",IF([@CATEGORY]="PROFIT","N/A","")

and
MAX(0,MIN(10000-SUM(I$5:I$5),I6,10000))*0.45+(I6-MAX(0,MIN(10000-SUM(I$5:I$5),I6,10000)))*0.36,""))))

I have just added the OR to try and join them, can anyone advise?

Many thanks