If you charge your clients a monthly retainer, is it for hours? Do you bill after hours are spent? Does your team track hours in detail and provide timesheets to your clients? If not, how do you excuse not reporting hours to clients? I understand the internal reasons for tracking hours to manage resources but for instance I've made changes on a client's website that took 30 minutes and netted them an dramatic ROI so why should I only charge my hourly rate for this dramatic improvement in revenue to my client? Shouldn't it be worth more than the time it takes?