This will vary from one entrepreneur to another depending on what excites you the most about your business. Outsource whatever you don’t want to do or aren’t good at. Nine times out of ten, you will never regret buying back your time and that’s what outsourcing lets you do.
Find the overlap between tasks you don’t want to do and valuable business functions. An example a member of our Facebook community gave is outsourcing the first contact for B2B wholesale. You don’t have to be doing that. It’s time consuming, but it’s also potentially hugely valuable if you get a few good accounts out of it.
Pro tip: If you are looking to outsource bookkeeping, I use Bench.co. I need someone to keep my books, but no way do I want to do that. So paying to have this done and getting a nice easy packet of tax prep documents is worth it for me!