For each month, Senly adds up:
1. Client fees — the monthly rate of every client that was active that month.
2. Fixed other income — recurring income outside of clients (e.g. training sessions, retainer).
3. One-off income — individual items that fall within that specific month.
The same logic applies to costs: client costs, fixed costs and one-off costs. Profit = income minus costs.
If you set a manual override for a month, that number fully replaces the automatic calculation — handy for unusual billing or corrections.