In all travel agencies billing operation after ticket, visa and tour packages is the most step and to allow business management information about profit
and loss of sales per month. billing operations and vouchers in travel agency could be categorized as:
- Gross sales of tickets
- Gross sales of Visa issue
- Gross sales of Tours
- Offices expenses
Gross means sales amount with charges of it. so that to to have net sales amount, all charges amounts should be deducted from gross sales amount.
Office expenses are like: rent, telephone lines, internet charges, food and drinks, repairs, building monthly charges, fuels, …