Free tool
What you actually earn an hour
You charge one number and live on another. The gap is travel, prep, admin, the sessions that get cancelled, and the invoices that quietly never get paid.
$
One-hour sessions. Halve it if yours run 30 minutes.
min
min
min
Scheduling texts, writing invoices, chasing payment, bookkeeping.
%
Share of booked sessions that never happen and you don't charge for.
%
Share of what you bill that you eventually write off.
The yearly write-off figure assumes 44 teaching weeks. Everything here is your own estimate — nothing is sent anywhere or stored.
Knowing the number is the easy half
The hard half is asking for it. Slate logs your sessions, turns them into invoices, and does the following up in your name until the money lands.