Does Zoho, have the ability to do partial billing? Occasionally I need to take a deposit against a full amount
Yes. Zoho lets you enter partial billing, but only in Zoho Books or Zoho Invoice. Here’s an explanation on how to do it from Zoho.com.
In Zoho CRM, invoices are a bit more primitive. You cannot enter partial billing without adding Zoho Books or Zoho Invoice as an add-on product. Here’s a forum post on Zoho.com where users discuss this.
Hope this helps!