For subscription-based B2C SaaS businesses where the business is not charge for the support, but for the subscription. How much does on average customer/visitor support account to?
In other words, for those in the business, could you tell me what
computes to? For customer support staff time on live (phone/chat) assistance and answering tickets.
# paying customers (or total visitors)
The question How much does on average customer/visitor support account to? is quite general but I could suggest one way you can estimate and then find it out through experimentation:
Support staff is usually a fixed cost you could estimate, e.g. 1000 USD a month.
How many of your paying customers are likely to request support? There is no rule of the thumb, perhaps ask someone who is working in the same or a similar market niche. The hole idea is to estimate some ratios, let's say per month:
Even if you just started, and have 2 customers you could figure out how many need help.
#paying customers needing support / #paying customers
Then, how many customers could 1 support person handle per month? Again, you have to estimate.
Ok, so far you have the %of customer needing support and the crew of supporters that can help them, e.g.: 30 of 100 customers, could be handled by 2 supporters.
Since your Product is a Saas, you should have estimated the churn rate and sign up rate, so you are likely to know how many customers there will be next month, and consequently how many would need support, thus having an estimate of the size of the support staff.
As you start getting customers, you should always measure that %, because if you improve the software and documentation it is likely that the % should fall. If you do not improve it, it is likely that more customers would be in need of support.
Another tip: Consider including selfservice support software, such as tenderapp.com which allows you to redirect most obvious questions to