Create Software to easily calculate fee's.

I need fast software that would replace Excel and the If, Then function for figuring out fee's on a monthly basis. For example: Our fees for Asset Management (Balance of account value): 0-$25: no fee $25 - 3,500: .95 cents per month $3,500 - 10,000: .35% per year - figured to monthly fee. $10,000 - 100,000: .25% pear year - figured to monthly fee. $100,000+: .15% per year - figured to monthly fee. Needs to be able to upload / download Excel / CSV file into program to seamlessly figure fee's quickly.