This is the benefit to charging based on a percentage of your client's revenue. An industry standard would be to charge about 1-3% of your client's gross income, and that is about what they should spend on a monthly bookkeeper (or all of their bill pay and invoicing or other office tasks).

Self-taught bookkeepers use a variety of courses, seminars, books, and other online resources to learn about bookkeeping and accounting. You can also learn how to use accounting software, like QuickBooks, which can teach you about the basics of bookkeeping as well as the technology used by many businesses.

To learn these skills and others, new bookkeepers often receive around six months of on-the-job training to learn how to use bookkeeping software, databases, and spreadsheets. Though bookkeepers don't need to hold college degrees, some may see their salaries increase after completing an undergraduate degree.