Storage and handling income
A UAQ FTZ warehousing company might charge clients per pallet per week, plus handling in and out, plus transport to Dubai. Storage repeats every week; handling and transport vary. HelloBooks bills fixed storage with recurring invoices and the AI agent drafts variable handling invoices from the activity reports you upload.
Each client is a class, so forklift leases, labour, utilities and fuel can be spread or tagged to the clients they serve. The owner can ask "which three customers earn us the least per pallet?" and see the answer with the costs behind it.