Business tax deductible expenses are any costs incurred during the normal course of a business that can be deducted against your total taxable income. Examples include employee salaries, subcontractor payments, rent, loan repayment interest and insurance premiums to name just a few. The key to making sure you get the full benefit of these deductions is to keep accurate records of all your business expenses throughout the year so that they can be accurately claimed at tax time. Keeping track of your business tax deductible expenses list can save you valuable money, so make sure you take some time each month to review it.