Deductions from gross income include the following:
General business expenses such as electricity, advertising, repair charges, salaries and wages, welfare and social security expenses, rent, interest and insurance
Depreciation (see Depreciation)
Cost of travel, up to 0.6% of annual income
Cost of guest entertainment and telephone, up to 0.4% of annual income
Donations and support, up to 0.3% of annual income
Expenses not related to business activities are not deductible. Other nondeductible expenses include the following: