Definitions for "Business Expenses"
All allowable costs of producing self employment income. See: Income -- Special Income Types - Self-employment income - General rules; Income -- Special Income Types - Self-employment income - Allowable expenses; and Income -- Special Income Types - Self-employment expenses that are not allowed as income deductions
Many, but not all, outgoings of a business can be set against total income when arriving at taxable profits.
Expenses of a business incurred in earning the profits of the business. Not all business expenses are allowable for tax purposes.