This depends on the type of work. For project-based work, charge an amount that makes it worthwhile on an hourly rate. As an example, say you’re designing a website that’s going to take 4 hours. If you charge $100 for that website, the hourly rate breaks down to $25. Ask yourself if that’s enough for your financial needs based on the value you’re offering. If not, consider charging more. Consider what the competition is charging, though.