How to convert (and keep) clients using client management Running a profitable company isn’t just about bringing clients in—it’s about keeping ‘em around, too. We all know the stats back this up. Time and time again, we’ve been told that it costs about five times more to attract new clients than keep old ones, and increasing retention rates by just 5% can boost profits from 25% to 95%. Sounds good, huh. So, how can you convert and keep clients in your portfolio?