Look at what the market will bear. Adjust based on how full/empty your pipeline is. For this, you need to be involved in 'the scene' - networking drinks, profes

Look at what the market will bear. Adjust based on how full/empty your pipeline is. For this, you need to be involved in 'the scene' - networking drinks, professional development events, that sort of drudgery. Depending on your industry, you can find out what others bid on projects and somewhat derive their rates by asking for results from other rfp's. Another tactic is to meet the client and feel out what his budget is. Base your offer on that. I know people say to never take fixed price projects, but if you manage expectations well, it's perfectly feasible in my experience, and it'll get you (well paid) work that others won't even bid on. Clients can't make full specs. If they could, they'd get some guys from upwork for $5/hr to code it up for them. And they don't want to write blank cheques, either. So the arbitrage there is where the opportunity is as a consultant (not as a freelancer - don't market yourself like that, it denotes 'replaceable cog'). I don't know in what market you are, but 600e (=usd 715) is on the low end for skilled dev work in western europe excluding non-london uk, in my experience (so not slicing psd's or doing piecewise javascript website elements, I'm talking full custom systems). Don't compete on price unless you're desperate for the money. Life's too short to be nickle and dimed.