First, you want to start with your goals and/or circumstances. Ask things like, “Is this something you can guide me through?” and “Do you have experience with similar situations?”
You then want to ask about their approach. For example, “How do you approach a new coaching relationship?” or “What does a coaching relationship with you typically look like?”
You will also want to ask about outcomes. A good coach will not make promises about the outcome because the outcome depends heavily on what the coachee is willing to put in. A good coach will work hard for you, but ultimately, you are the one who has to take the real steps towards creating what you want. So, instead of asking about guarantees or promises, ask, “What outcomes do you typically see with clients?” or “If I really stick with this, what should I expect to experience?”
If you’re liking what you hear, ask about the programs and/or packages available, and don’t be shy to ask about pricing, payment plans or any other financial questions or concerns. It’s also perfectly acceptable to ask for pricing information to be sent to you by email so that you can take your time. Choosing a coach is an important decision and a good coach will respect that.
Also ask them if they provide support in between sessions and, if so, how (email, phone, IM). Ask about their session length too, as coaches can vary session time from between 30 minutes, up to 1.5 hours, with the average being between 45 minutes to 1 hour.
Finally, ask what led them into coaching to have them share their journey and see what it brings up in you.