try this idea within another if for comfort or corporate
=C12*(0.05+IF(C121000000,0.01,IF(C12500000,0.005 ,0)))

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Don Guillett
SalesAid Software

"yy" wrote in message
...
hi i have a question, i am not sure what formula i can use to calculate
this
question, cause i am require to use the tier system for it:

Commissions for airline tickets are based on a tier system. Comfort gets
5%
commissions from the first $500,000 of ticket revenue, 5.5% from revenue
between $500,001 to $1,000,000 and 6% for revenue above $1,000,000, for
Corporate tickets revenue. As for Individuals tickets revenue, the
commissions' structure is 4.5% for the first $500,000, 6% from revenue
between $500,001 to $1,000,000 and 7% for revenue above $1,000,000.
Commissions for packaged tours are projected at 12% of packaged revenue.