What is that process costing you?
Four numbers you already know. It shows its working, asks for no email, and runs entirely in your browser.
What this tells you
The cost of doing something by hand, annualised, and the portion of it that is rule-driven enough to be a candidate for automation. That is a genuinely useful number, because most teams have never put one on the work: it sits inside salaries and looks free.
What it does not
It is not a return, and we are not claiming one. Automating a process has a build cost, leaves an exception path a person still works, and takes time to pay back. Anyone showing you a return without knowing your systems is guessing. This estimates the size of the problem, which is the honest thing a calculator can do.
Assumptions
48 working weeks
Allowing for leave and public holidays. Adjust the weekly hours if your year looks different.
Loaded hourly cost
Salary plus employer costs divided by hours worked, not take-home pay. Using take-home understates it by a wide margin.
Rule-driven means one right answer
The part with one clear right answer each time. Judgement calls should not be counted; they are the part a person keeps.