How do I bill customers for expenses? 16 November 2018 19:15 You can easily add any expenses through the app when closing the job. The expenses will be added to the clients final bill. Related articles Do I need to include GST on my invoices to clients? Can I be a HeyBryan Expert if I don’t have trade certification? What if there are unexpected expenses or the job takes longer than anticipated? Is my bank information secure? How does HeyBryan work?