Accountants perform financial calculations for companies in a wide variety of fields. Some common duties include creating sales and cash flow reports, administering payroll, keeping balance sheets, carrying out billing activities, managing budgets and keeping inventory. The accountant may also be responsible for filing taxes for the company, as well as reviewing past reports to generate income forecasts. Knowledge of accounting software such as Tally and Microsoft Excel is needed. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.