Full-time Life Coach Career Income: The average full time life coach limits herself or himself to less than 20 one-on-one clients a month and charges around $350 a month per client. If you have 20 consistent clients, that means a gross income of about $7,000.ut for me, it is totally worth it! Average Life Coach Income: A 2007 study of nearly 5500 thousand coaches from around the world found that the average annual income for full-time coaches was over $83,000 (US dollars). The researchers found that part-time coaches made around $26,000 a year.