Generally, unless you have a team, if you're finding that you can multiply your hourly rate by 2000 and get within shouting distance of your annual gross, that means you're not charging enough.
There are a lot of good things that come from jacking your rates up, beyond just being able to make the same amount of money while doing far less work.
A pretty common strategy is to dial your rate to a point where you're consistently between 70-80% utilized, and to raise your rates some % for all new clients annually.
At a consultancy with a team of people, a utilization rate over 85% might be considered overheated, risking burning people out.
(Though if you're running a body shop you don't care about overheating).
If it was just me and a partner consulting, I'd use rates to dial utilization back to 50%.