I ran a part time lawn service last year and was paid mostly in cash and cash apps. By the end of the year it was a mess due to growth ended up with 90k revenue.
This coming year I would like to set up seasonal contracts with automatic monthly billing for my clients.
What is an ideal low cost payment service?
Check out a service industry software. Some that I have looked into include Housecall Pro or Jobber. You can do billing and it will help you keep jobs/clients organized.