QuickBooks is the commonly used accounting software for tax preparation, accounting for thousands of small and medium businesses. The company intuit has developed a dedicated customer support for attending to customer issues. It has a complete list of self employed quickbooks expenses categories list and tax deductions. These include advertising, car expenses, business insurance and depreciation that can be tabulated and compiled in the report. other expenses include supplies, meals, travel and office expenses QuickBooks online tech support is available at the phone number +1-877-249-9444.